unojУспехи наук о животныхErnst Journal of Animal Science3034-493ХФедеральный исследовательский центр животноводства – ВИЖ имени академика Л.К. Эрнста10.25687/3034-493X.2025.3.2.002unoj-15Research ArticleБиологические наукиBiological SciencesФакторы гуморального иммунитета (IgG) и их роль в иммунитете телят: обзорHumoral immunity factors (IgG) and their role in calf immunity: a reviewАбиловА. И.AbilovA. I.

Московская обл.

Moscow Region

УстименкоА. В.UstimenkoA. V.

Московская обл.

Moscow Region

ФГБНУ ФИЦ ВИЖ им. Л.К. ЭрнстаРоссияL.K. Ernst Federal Research Center for Animal HusbandryRussian Federation202514082025022133Copyright © Абилов А.И., Устименко А.В., 20252025Абилов А.И., Устименко А.В.Abilov A.I., Ustimenko A.V.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.ernstjournal.ru/jour/article/view/15

Пассивный иммунитет, получаемый с молозивом, имеет решающее значение для здоровья и благополучия новорожденных телят. Существует огромное количество факторов, которые могут влиять на усвоение иммуноглобулинов (IgG) телятами, которые важно учитывать начиная с подготовки стельных животных к отелу и заканчивая технологией подготовки, сбора и выпойки непосредственно молозива. Прямые и непрямые методы позволяют оценивать качество и количество IgG, а также качество проведения процедуры передачи пассивного иммунитета теленку. Таким образом, технология работы с молозивом является ключевой частью профилактики заболеваний и смертности у молодых молочных телят.

Passive immunity obtained with colostrum is of critical importance for the health and well-being of newborn calves. There are a large number of factors that can influence the absorption of immunoglobulins (IgG) by calves, which are important to consider from the preparation of pregnant animals for calving to the technology of preparation, collection and feeding of colostrum itself. Direct and indirect methods allow us to evaluate the quality and quantity of IgG, as well as the quality of the procedure for transferring passive immunity to the calf. Thus, the technology of working with colostrum is a key part of the prevention of diseases and mortality in young dairy calves.

телятапассивный перенос иммунитетаиммуноглобулиныметоды мониторингаcalvespassive transfer of immunityimmunoglobulinsmonitoring methodsReferencesОлексиевич Е.А. Использование сексированной спермы в молочном животноводстве // в сбор. Научное обеспечение развития АПК в условиях импортозамещения. – 2020. – с. 284–285Олексиевич Е.А. Использование сексированной спермы в молочном животноводстве // в сбор. Научное обеспечение развития АПК в условиях импортозамещения. – 2020. – с. 284–285Соколовская Н. И., Абилов А. И., Бронская А. В., Субботин Д. Д. Сохранность телятважный резерв улучшения воспроизводства //Животноводство. – 1987. – №. 8. – С. 45-47Соколовская Н. И., Абилов А. И., Бронская А. В., Субботин Д. Д. Сохранность телятважный резерв улучшения воспроизводства //Животноводство. – 1987. – №. 8. – С. 45-47Kampen A. H., Olsen I., Tollersrud T., Storset A. K., Lund A. Lymphocyte subpopulations and neutrophil function in calves during the first 6 months of life //Veterinary immunology and immunopathology. – 2006. – Т. 113, №. 1-2. – С. 53-63. DOI: 10.1016/j.vetimm.2006.04.001Kampen A. H., Olsen I., Tollersrud T., Storset A. K., Lund A. Lymphocyte subpopulations and neutrophil function in calves during the first 6 months of life //Veterinary immunology and immunopathology. – 2006. – Т. 113, №. 1-2. – С. 53-63. DOI: 10.1016/j.vetimm.2006.04.001Лоретц О. Г. Повышение естественной резистентности и сохранности телят в молочный период: научно-практические рекомендации. Екатеринбург: Издательство Уральского ГАУ, 2018. – 52 сЛоретц О. Г. Повышение естественной резистентности и сохранности телят в молочный период: научно-практические рекомендации. Екатеринбург: Издательство Уральского ГАУ, 2018. – 52 сBarry J., Bokkers E. A., Berry D. P., de Boer I. J., McClure J., Kennedy E. Associations between colostrum management, passive immunity, calf-related hygiene practices, and rates of mortality in preweaning dairy calves //Journal of dairy science. – 2019. – Т. 102, №. 11. – С. 10266-10276. DOI: 10.3168/jds.2019-16815Barry J., Bokkers E. A., Berry D. P., de Boer I. J., McClure J., Kennedy E. Associations between colostrum management, passive immunity, calf-related hygiene practices, and rates of mortality in preweaning dairy calves //Journal of dairy science. – 2019. – Т. 102, №. 11. – С. 10266-10276. DOI: 10.3168/jds.2019-16815Godden S. M., Lombard J. E., Woolums A. R. Colostrum management for dairy calves //Veterinary Clinics: Food Animal Practice. – 2019. – Т. 35, №. 3. – С. 535-556. DOI: 10.1016/j.cvfa.2019.07.005Godden S. M., Lombard J. E., Woolums A. R. Colostrum management for dairy calves //Veterinary Clinics: Food Animal Practice. – 2019. – Т. 35, №. 3. – С. 535-556. DOI: 10.1016/j.cvfa.2019.07.005McGrath B. A. et al. Composition and properties of bovine colostrum: a review//Dairy Science & Technology. – 2016. – Т. 96. – С. 133-158. DOI: 10.1007/s13594-015-0258-xMcGrath B. A. et al. Composition and properties of bovine colostrum: a review//Dairy Science & Technology. – 2016. – Т. 96. – С. 133-158. DOI: 10.1007/s13594-015-0258-xPuppel K., Gołębiewski M., Grodkowski G., Slósarz J., Kunowska-Slósarz M., Solarczyk P., Łukasiewicz M., Balcerak M., Przysucha T. Composition and factors affecting quality of bovine colostrum: A review //Animals. – 2019. – Т. 9, №. 12. – С. 1070. DOI: 10.3390/ani9121070Puppel K., Gołębiewski M., Grodkowski G., Slósarz J., Kunowska-Slósarz M., Solarczyk P., Łukasiewicz M., Balcerak M., Przysucha T. Composition and factors affecting quality of bovine colostrum: A review //Animals. – 2019. – Т. 9, №. 12. – С. 1070. DOI: 10.3390/ani9121070Бакаева Л. Н., Карамаева А. С., Карамаев С. В., Киргизова И. А. Динамика качества молозива первого удоя у коров молочных пород в зависимости от сезона отела // Молочное и мясное скотоводство. – 2018. – № 7. – С. 41-44Бакаева Л. Н., Карамаева А. С., Карамаев С. В., Киргизова И. А. Динамика качества молозива первого удоя у коров молочных пород в зависимости от сезона отела // Молочное и мясное скотоводство. – 2018. – № 7. – С. 41-44Georgiev I. P. Differences in chemical composition between cow colostrum and milk //Bulgarian Journal of Veterinary Medicine. – 2008. – Т. 11, №. 1. – С. 3-12.Georgiev I. P. Differences in chemical composition between cow colostrum and milk //Bulgarian Journal of Veterinary Medicine. – 2008. – Т. 11, №. 1. – С. 3-12.Elfstrand L., Lindmark-Månsson H., Paulsson M., Nyberg L., Åkesson B. Immunoglobulins, growth factors and growth hormone in bovine colostrum and the effects of processing //International Dairy Journal. – 2002. – Т. 12, №. 11. – С. 879-887. DOI: 10.1016/S0958-6946(02)00089-4Elfstrand L., Lindmark-Månsson H., Paulsson M., Nyberg L., Åkesson B. Immunoglobulins, growth factors and growth hormone in bovine colostrum and the effects of processing //International Dairy Journal. – 2002. – Т. 12, №. 11. – С. 879-887. DOI: 10.1016/S0958-6946(02)00089-4Корякина Л. П., Степанов К. М., Павлова А. И. Клеточный и ферментный состав молозива // Молочная промышленность. – 2019. – № 3. – С. 59-61Корякина Л. П., Степанов К. М., Павлова А. И. Клеточный и ферментный состав молозива // Молочная промышленность. – 2019. – № 3. – С. 59-61Lopez A. J., Heinrichs A. J. Invited review: The importance of colostrum in the newborn dairy calf //Journal of dairy science. – 2022. – Т. 105, №. 4. – С. 2733-2749. DOI: 10.3168/jds.2020-20114Lopez A. J., Heinrichs A. J. Invited review: The importance of colostrum in the newborn dairy calf //Journal of dairy science. – 2022. – Т. 105, №. 4. – С. 2733-2749. DOI: 10.3168/jds.2020-20114Донник И. М., Неверова О. П., Горелик О. В. Качество молозива и сохранность телят в условиях использования природных энтеросорбентов //Аграрный вестник Урала. – 2016. – №. 7 (149). – С. 4-8Донник И. М., Неверова О. П., Горелик О. В. Качество молозива и сохранность телят в условиях использования природных энтеросорбентов //Аграрный вестник Урала. – 2016. – №. 7 (149). – С. 4-8Barrington G. M., Parish S. M. Bovine neonatal immunology //Veterinary Clinics of North America: Food Animal Practice. – 2001. – Т. 17, №. 3. – С. 463-476. DOI: 10.1016/S0749-0720(15)30001-3Barrington G. M., Parish S. M. Bovine neonatal immunology //Veterinary Clinics of North America: Food Animal Practice. – 2001. – Т. 17, №. 3. – С. 463-476. DOI: 10.1016/S0749-0720(15)30001-3Farrell Jr H. M., Jimenez-Flores R., Bleck G. T., Brown E. M., Butler J. E., Creamer L. K., Hicks C.L., Hollar C.M., Ng-Kwai-Hang K.F., Swaisgood, H. E. Nomenclature of the proteins of cows’ milk—Sixth revision //Journal of dairy science. – 2004. – Т. 87, №. 6. – С. 1641-1674. DOI:10.3168/jds.S0022-0302(04)73319-6Farrell Jr H. M., Jimenez-Flores R., Bleck G. T., Brown E. M., Butler J. E., Creamer L. K., Hicks C.L., Hollar C.M., Ng-Kwai-Hang K.F., Swaisgood, H. E. Nomenclature of the proteins of cows’ milk—Sixth revision //Journal of dairy science. – 2004. – Т. 87, №. 6. – С. 1641-1674. DOI:10.3168/jds.S0022-0302(04)73319-6Jaster E. H. Evaluation of quality, quantity, and timing of colostrum feeding on immunoglobulin G1 absorption in Jersey calves //Journal of dairy science. – 2005. – Т. 88, №. 1. – С. 296-302. DOI:10.3168/jds.S0022-0302(05)72687-4Jaster E. H. Evaluation of quality, quantity, and timing of colostrum feeding on immunoglobulin G1 absorption in Jersey calves //Journal of dairy science. – 2005. – Т. 88, №. 1. – С. 296-302. DOI:10.3168/jds.S0022-0302(05)72687-4Robbers L., Jorritsma R., Nielen M., Koets A. A scoping review of on-farm colostrum management practices for optimal transfer of immunity in dairy calves //Frontiers in Veterinary Science. – 2021. – Т. 8. – С. 668639. DOI:10.3389/fvets.2021.668639Robbers L., Jorritsma R., Nielen M., Koets A. A scoping review of on-farm colostrum management practices for optimal transfer of immunity in dairy calves //Frontiers in Veterinary Science. – 2021. – Т. 8. – С. 668639. DOI:10.3389/fvets.2021.668639Larson B. L., Heary Jr H. L., Devery J. E. Immunoglobulin production and transport by the mammary gland //Journal of Dairy Science. – 1980. – Т. 63, №. 4. – С. 665-671.. DOI:10.3168/jds.S0022-0302(80)82988-2Larson B. L., Heary Jr H. L., Devery J. E. Immunoglobulin production and transport by the mammary gland //Journal of Dairy Science. – 1980. – Т. 63, №. 4. – С. 665-671.. DOI:10.3168/jds.S0022-0302(80)82988-2Kaskous S., Fadlelmoula A. Immunoglobulin in colostrum and health of newborn calves //Scientific Journal of Review. – 2015. – Т. 4, №. 12. – С. 242-249. DOI: 10.14196/sjr.v4i12.2075Kaskous S., Fadlelmoula A. Immunoglobulin in colostrum and health of newborn calves //Scientific Journal of Review. – 2015. – Т. 4, №. 12. – С. 242-249. DOI: 10.14196/sjr.v4i12.2075Stockler J., Chamorro M. F. Colostrum: A Review //Bovine Reproduction. – 2021. – С. 924-944. DOI: 10.1002/9781119602484.ch75Stockler J., Chamorro M. F. Colostrum: A Review //Bovine Reproduction. – 2021. – С. 924-944. DOI: 10.1002/9781119602484.ch75Zhang L., Boeren S., Hageman J. A., van Hooijdonk T., Vervoort J., Hettinga K. Bovine milk proteome in the first 9 days: protein interactions in maturation of the immune and digestive system of the newborn //PloS one. – 2015. – Т. 10, №. 2. – С. e0116710. DOI:10.1371/journal.pone.0116710Zhang L., Boeren S., Hageman J. A., van Hooijdonk T., Vervoort J., Hettinga K. Bovine milk proteome in the first 9 days: protein interactions in maturation of the immune and digestive system of the newborn //PloS one. – 2015. – Т. 10, №. 2. – С. e0116710. DOI:10.1371/journal.pone.0116710de Souza R. S., Dos Santos L. B. C., Melo I. O., Cerqueira D. M., Dumas J. V., Leme F. D. O. P., Moreira T.F., Meneses R.M., de Carvalho A.U., Facury-Filho E. J. Current diagnostic methods for assessing transfer of passive immunity in calves and possible improvements: A literature review //Animals. – 2021. – Т. 11, №. 10. – С. 2963. DOI:10.3390/ani11102963de Souza R. S., Dos Santos L. B. C., Melo I. O., Cerqueira D. M., Dumas J. V., Leme F. D. O. P., Moreira T.F., Meneses R.M., de Carvalho A.U., Facury-Filho E. J. Current diagnostic methods for assessing transfer of passive immunity in calves and possible improvements: A literature review //Animals. – 2021. – Т. 11, №. 10. – С. 2963. DOI:10.3390/ani11102963Lombard J. et al. Consensus recommendations on calf-and herd-level passive immunity in dairy calves in the United States //Journal of dairy science. – 2020. – Т. 103, №. 8. – С. 7611-7624. DOI:10.3168/jds.2019-17955Lombard J. et al. Consensus recommendations on calf-and herd-level passive immunity in dairy calves in the United States //Journal of dairy science. – 2020. – Т. 103, №. 8. – С. 7611-7624. DOI:10.3168/jds.2019-17955Gelsinger S. L., Jones C. M., Heinrichs A. J. Effect of colostrum heat treatment and bacterial population on immunoglobulin G absorption and health of neonatal calves //Journal of Dairy Science. – 2015. – Т. 98, №. 7. – С. 4640-4645. DOI:10.3168/jds.2014-8790Gelsinger S. L., Jones C. M., Heinrichs A. J. Effect of colostrum heat treatment and bacterial population on immunoglobulin G absorption and health of neonatal calves //Journal of Dairy Science. – 2015. – Т. 98, №. 7. – С. 4640-4645. DOI:10.3168/jds.2014-8790Yang M., Zou Y., Wu Z. H., Li S. L., Cao Z. J. Colostrum quality affects immune system establishment and intestinal development of neonatal calves //Journal of dairy science. – 2015. – Т. 98, №. 10. – С. 7153-7163. DOI:10.3168/jds.2014-9238Yang M., Zou Y., Wu Z. H., Li S. L., Cao Z. J. Colostrum quality affects immune system establishment and intestinal development of neonatal calves //Journal of dairy science. – 2015. – Т. 98, №. 10. – С. 7153-7163. DOI:10.3168/jds.2014-9238Федоров Ю.Н., Клюкина В.И., Богомолова О.А., Романенко М.Н. Молозиво и пассивный иммунитет у новорожденных телят: обзор// Российский ветеринарный журнал. — 2018. — № 6. — С. 20–24. DOI:10.32416/article_5c050abdc381a5.42529397Федоров Ю.Н., Клюкина В.И., Богомолова О.А., Романенко М.Н. Молозиво и пассивный иммунитет у новорожденных телят: обзор// Российский ветеринарный журнал. — 2018. — № 6. — С. 20–24. DOI:10.32416/article_5c050abdc381a5.42529397Williams D. R., Pithua P., Garcia A., Champagne J., Haines D. M., Aly S. S. Effect of three colostrum diets on passive transfer of immunity and preweaning health in calves on a California dairy following colostrum management training //Veterinary medicine international. – 2014. – Т. 2014, №. 1. – С. 698741. DOI:10.1155/2014/698741Williams D. R., Pithua P., Garcia A., Champagne J., Haines D. M., Aly S. S. Effect of three colostrum diets on passive transfer of immunity and preweaning health in calves on a California dairy following colostrum management training //Veterinary medicine international. – 2014. – Т. 2014, №. 1. – С. 698741. DOI:10.1155/2014/698741Heinrichs A. J., Heinrichs B. S. A prospective study of calf factors affecting first-lactation and lifetime milk production and age of cows when removed from the herd //Journal of dairy science. – 2011. – Т. 94, №. 1. – С. 336-341. DOI:10.3168/jds.2010-3170Heinrichs A. J., Heinrichs B. S. A prospective study of calf factors affecting first-lactation and lifetime milk production and age of cows when removed from the herd //Journal of dairy science. – 2011. – Т. 94, №. 1. – С. 336-341. DOI:10.3168/jds.2010-3170Ganchev G., Yavuz E., Todorov N. Effect of feeding program for first two months after birth of female calves on growth, development and first lactation performance//Agricultural Science and Technology – 2015. – Т. 7, №. 4. – C. 389 – 401Ganchev G., Yavuz E., Todorov N. Effect of feeding program for first two months after birth of female calves on growth, development and first lactation performance//Agricultural Science and Technology – 2015. – Т. 7, №. 4. – C. 389 – 401Robison J. D., Stott G. H., DeNise S. K. Effects of passive immunity on growth and survival in the dairy heifer //Journal of dairy science. – 1988. – Т. 71, №. 5. – С. 1283-1287. DOI:10.3168/jds.S0022-0302(88)79684-8Robison J. D., Stott G. H., DeNise S. K. Effects of passive immunity on growth and survival in the dairy heifer //Journal of dairy science. – 1988. – Т. 71, №. 5. – С. 1283-1287. DOI:10.3168/jds.S0022-0302(88)79684-8Stilwell G., Carvalho R. C. Clinical outcome of calves with failure of passive transfer as diagnosed by a commercially available IgG quick test kit //The Canadian Veterinary Journal. – 2011. – Т. 52, №. 5. – С. 524.Stilwell G., Carvalho R. C. Clinical outcome of calves with failure of passive transfer as diagnosed by a commercially available IgG quick test kit //The Canadian Veterinary Journal. – 2011. – Т. 52, №. 5. – С. 524.Шульга Н. Н., Шульга И.С., Плавшак Л. П., Дикунина С. С. Законы формирования иммуноглобулиновой составляющей молозива// Национальная Ассоциация Ученых. – 2016. – № 3-2. – С. 59-62Шульга Н. Н., Шульга И.С., Плавшак Л. П., Дикунина С. С. Законы формирования иммуноглобулиновой составляющей молозива// Национальная Ассоциация Ученых. – 2016. – № 3-2. – С. 59-62McGee M., Earley B. passive immunity in beef-suckler calves //Animal. – 2019. – Т. 13, №. 4. – С. 810-825. DOI:10.1017/S1751731118003026McGee M., Earley B. passive immunity in beef-suckler calves //Animal. – 2019. – Т. 13, №. 4. – С. 810-825. DOI:10.1017/S1751731118003026Conneely M., Berry D. P., Murphy J. P., Lorenz I., Doherty M. L., Kennedy E. Effect of feeding colostrum at different volumes and subsequent number of transition milk feeds on the serum immunoglobulin G concentration and health status of dairy calves //Journal of dairy science. – 2014. – Т. 97, №. 11. – С. 6991- 7000. DOI:10.3168/jds.2013-7494Conneely M., Berry D. P., Murphy J. P., Lorenz I., Doherty M. L., Kennedy E. Effect of feeding colostrum at different volumes and subsequent number of transition milk feeds on the serum immunoglobulin G concentration and health status of dairy calves //Journal of dairy science. – 2014. – Т. 97, №. 11. – С. 6991- 7000. DOI:10.3168/jds.2013-7494Stott G. H. et al. Colostral immunoglobulin transfer in calves I. Period of absorption //Journal of dairy science. – 1979. – Т. 62, №. 10. – С. 1632-1638. DOI:10.3168/jds.S0022-0302(79)83472-4Stott G. H. et al. Colostral immunoglobulin transfer in calves I. Period of absorption //Journal of dairy science. – 1979. – Т. 62, №. 10. – С. 1632-1638. DOI:10.3168/jds.S0022-0302(79)83472-4Kruse V., Buus O. Corticosteroids in cow and calf at parturition //Acta Veterinaria Scandinavica. – 1972. – Т. 13, №. 4. – С. 585-587. DOI:10.1186/BF03547163Kruse V., Buus O. Corticosteroids in cow and calf at parturition //Acta Veterinaria Scandinavica. – 1972. – Т. 13, №. 4. – С. 585-587. DOI:10.1186/BF03547163Fischer A. J., Marx D. B., Menefee B. E., Nightengale G. T. Effect of delaying colostrum feeding on passive transfer and intestinal bacterial colonization in neonatal male Holstein calves //Journal of dairy science. – 2018. – Т. 101, №. 4. – С. 3099-3109. DOI:10.3168/jds.2017-13397Fischer A. J., Marx D. B., Menefee B. E., Nightengale G. T. Effect of delaying colostrum feeding on passive transfer and intestinal bacterial colonization in neonatal male Holstein calves //Journal of dairy science. – 2018. – Т. 101, №. 4. – С. 3099-3109. DOI:10.3168/jds.2017-13397Lindley G. Bovine Colostrum and Its Management in UK Dairy Herds //Animal Science Cases. – 2024. DOI:10.1079/animalsciencecases.2024.0001Lindley G. Bovine Colostrum and Its Management in UK Dairy Herds //Animal Science Cases. – 2024. DOI:10.1079/animalsciencecases.2024.0001Morin D. E., Nelson S. V., Reid E. D., Nagy D. W., Dahl G. E., Constable P. D. Effect of colostral volume, interval between calving and first milking, and photoperiod on colostral IgG concentrations in dairy cows //Journal of the American Veterinary Medical Association. – 2010. – Т. 237, №. 4. – С. 420-428. DOI:10.2460/javma.237.4.420Morin D. E., Nelson S. V., Reid E. D., Nagy D. W., Dahl G. E., Constable P. D. Effect of colostral volume, interval between calving and first milking, and photoperiod on colostral IgG concentrations in dairy cows //Journal of the American Veterinary Medical Association. – 2010. – Т. 237, №. 4. – С. 420-428. DOI:10.2460/javma.237.4.420Godden S. M., Haines D. M., Hagman D. Improving passive transfer of immunoglobulins in calves. I: Dose effect of feeding a commercial colostrum replacer //Journal of dairy science. – 2009. – Т. 92, №. 4. – С. 1750-1757. DOI:10.3168/jds.2008-1846Godden S. M., Haines D. M., Hagman D. Improving passive transfer of immunoglobulins in calves. I: Dose effect of feeding a commercial colostrum replacer //Journal of dairy science. – 2009. – Т. 92, №. 4. – С. 1750-1757. DOI:10.3168/jds.2008-1846Bartier A. L., Windeyer M. C., Doepel L. Evaluation of on-farm tools for colostrum quality measurement //Journal of dairy science. – 2015. – Т. 98., №. 3. – С. 1878-1884. DOI:10.3168/jds.2014-8415Bartier A. L., Windeyer M. C., Doepel L. Evaluation of on-farm tools for colostrum quality measurement //Journal of dairy science. – 2015. – Т. 98., №. 3. – С. 1878-1884. DOI:10.3168/jds.2014-8415Zarei S., Ghorbani G. R., Khorvash M., Martin O. B., Mahdavi A. H., Riasi A. The impact of season, parity, and volume of colostrum on Holstein dairy cows colostrum composition// Agricultural Sciences – 2017–. Т. 8, №. 7 – C. 572-581 DOI:10.4236/as.2017.87043Zarei S., Ghorbani G. R., Khorvash M., Martin O. B., Mahdavi A. H., Riasi A. The impact of season, parity, and volume of colostrum on Holstein dairy cows colostrum composition// Agricultural Sciences – 2017–. Т. 8, №. 7 – C. 572-581 DOI:10.4236/as.2017.87043Бакаева Л. Н., Карамаева А.С., Карамаев С.В. Формирование иммунного статуса у новорожденных телят молочных и комбинированных пород // Молочное и мясное скотоводство. – 2019. – № 1. – С. 32-36.Бакаева Л. Н., Карамаева А.С., Карамаев С.В. Формирование иммунного статуса у новорожденных телят молочных и комбинированных пород // Молочное и мясное скотоводство. – 2019. – № 1. – С. 32-36.Morrill K. M., E. Conrad A. Lago J. Campbell J. Quigley, H. Tyler. Nationwide evaluation of quality and composition of colostrum on dairy farms in the United States //Journal of dairy science. – 2012. – Т. 95, №. 7. – С. 3997-4005. DOI:10.3168/jds.2011-5174Morrill K. M., E. Conrad A. Lago J. Campbell J. Quigley, H. Tyler. Nationwide evaluation of quality and composition of colostrum on dairy farms in the United States //Journal of dairy science. – 2012. – Т. 95, №. 7. – С. 3997-4005. DOI:10.3168/jds.2011-5174Gross J. J., Kessler E. C., Bruckmaier R. M. Quarter vs. composite colostrum composition assessed by Brix refractometry, specific gravity and visual color appearance in primiparous and multiparous dairy cows //Translational animal science. – 2017. – Т. 1, №. 1. – С. 26-35. DOI:10.2527/tas2016.0001Gross J. J., Kessler E. C., Bruckmaier R. M. Quarter vs. composite colostrum composition assessed by Brix refractometry, specific gravity and visual color appearance in primiparous and multiparous dairy cows //Translational animal science. – 2017. – Т. 1, №. 1. – С. 26-35. DOI:10.2527/tas2016.0001Tyler J. W., Steevens B. J., Hostetler D. E., Holle J. M., Denbigh J. L. Colostral immunoglobulin concentrations in Holstein and Guernsey cows//American Journal of Veterinary Research. – 1999. – Т. 60, №. 9. – С. 1136-1139 DOI:10.2460/ajvr.1999.60.09.1136Tyler J. W., Steevens B. J., Hostetler D. E., Holle J. M., Denbigh J. L. Colostral immunoglobulin concentrations in Holstein and Guernsey cows//American Journal of Veterinary Research. – 1999. – Т. 60, №. 9. – С. 1136-1139 DOI:10.2460/ajvr.1999.60.09.1136Shivley C. B., Lombard J., Urie N. J., Haines D. M., Sargent R., Kopral C. A., Earleywine T.J., Olson J.D., Garry, F. B. Preweaned heifer management on US dairy operations: Part II. Factors associated with colostrum quality and passive transfer status of dairy heifer calves //Journal of dairy science. – 2018. – Т. 101, №. 10. – С. 9185-9198. DOI:10.3168/jds.2017-14008Shivley C. B., Lombard J., Urie N. J., Haines D. M., Sargent R., Kopral C. A., Earleywine T.J., Olson J.D., Garry, F. B. Preweaned heifer management on US dairy operations: Part II. Factors associated with colostrum quality and passive transfer status of dairy heifer calves //Journal of dairy science. – 2018. – Т. 101, №. 10. – С. 9185-9198. DOI:10.3168/jds.2017-14008Pritchett L.C., Gay C.C., Besser T.E. Hancock D. Management and production factors influencing immunoglobulin G1 concentration in colostrum from Holstein cows //Journal of dairy science. – 1991. – Т. 74, №. 7. – С. 2336-2341. DOI:10.3168/jds.S0022-0302(91)78406-3Pritchett L.C., Gay C.C., Besser T.E. Hancock D. Management and production factors influencing immunoglobulin G1 concentration in colostrum from Holstein cows //Journal of dairy science. – 1991. – Т. 74, №. 7. – С. 2336-2341. DOI:10.3168/jds.S0022-0302(91)78406-3Morin D. E., McCoy G. C., Hurley W. L. Effects of quality, quantity, and timing of colostrum feeding and addition of a dried colostrum supplement on immunoglobulin G1 absorption in Holstein bull calves //Journal of dairy science. – 1997. – Т. 80, №. 4. – С. 747-753. DOI:10.3168/jds.S0022-0302(97)75994-0Morin D. E., McCoy G. C., Hurley W. L. Effects of quality, quantity, and timing of colostrum feeding and addition of a dried colostrum supplement on immunoglobulin G1 absorption in Holstein bull calves //Journal of dairy science. – 1997. – Т. 80, №. 4. – С. 747-753. DOI:10.3168/jds.S0022-0302(97)75994-0Swan H., Godden S., Bey R., Wells S., Fetrow J., Chester-Jones H. Passive transfer of immunoglobulin G and preweaning health in Holstein calves fed a commercial colostrum replacer //Journal of Dairy Science. – 2007. – Т. 90, №. 8. – С. 3857-3866. DOI:10.3168/jds.2007-0152Swan H., Godden S., Bey R., Wells S., Fetrow J., Chester-Jones H. Passive transfer of immunoglobulin G and preweaning health in Holstein calves fed a commercial colostrum replacer //Journal of Dairy Science. – 2007. – Т. 90, №. 8. – С. 3857-3866. DOI:10.3168/jds.2007-0152Godden S., James R. E. Colostrum and milk replacers //Large Animal Internal Medicine. – 2020. – С. 382-393. DOI:10.1016/B978-0-323-55445-9.00021-5Godden S., James R. E. Colostrum and milk replacers //Large Animal Internal Medicine. – 2020. – С. 382-393. DOI:10.1016/B978-0-323-55445-9.00021-5Pithua P., Aly S. S., Champagne J., Hendrick S., Middleton J. R., Poock S. E. Passive transfer of immunity, preweaning health, and growth in Holstein calves fed a bovine lacteal-derived colostrum replacer or raw pooled colostrum //American Association of Bovine Practitioners Conference Proceedings. – 2011. – С. 173-173.Pithua P., Aly S. S., Champagne J., Hendrick S., Middleton J. R., Poock S. E. Passive transfer of immunity, preweaning health, and growth in Holstein calves fed a bovine lacteal-derived colostrum replacer or raw pooled colostrum //American Association of Bovine Practitioners Conference Proceedings. – 2011. – С. 173-173.Windeyer M. C., Leslie K. E., Godden S. M., Hodgins D. C., Lissemore K. D., LeBlanc S. J. Factors associated with morbidity, mortality, and growth of dairy heifer calves up to 3 months of age //Preventive veterinary medicine. – 2014. – Т. 113, №. 2. – С. 231-240. DOI:10.1016/j.prevetmed.2013.10.019Windeyer M. C., Leslie K. E., Godden S. M., Hodgins D. C., Lissemore K. D., LeBlanc S. J. Factors associated with morbidity, mortality, and growth of dairy heifer calves up to 3 months of age //Preventive veterinary medicine. – 2014. – Т. 113, №. 2. – С. 231-240. DOI:10.1016/j.prevetmed.2013.10.019Cabral R. G., Chapman C. E., Erickson P. S. Colostrum supplements and replacers for dairy calves //The Professional Animal Scientist. – 2013. – Т. 29, №. 5. – С. 449-456. DOI:10.15232/S1080-7446(15)30265-5Cabral R. G., Chapman C. E., Erickson P. S. Colostrum supplements and replacers for dairy calves //The Professional Animal Scientist. – 2013. – Т. 29, №. 5. – С. 449-456. DOI:10.15232/S1080-7446(15)30265-5Vandeputte S., Detilleux J., Rollin F. Investigation of colostrum quality in beef cattle by radial immunodiffusion and brix refractometry //The Veterinary Record. – 2014. – Т. 175, №. 14. – С. 353. DOI:10.1136/vr.101590Vandeputte S., Detilleux J., Rollin F. Investigation of colostrum quality in beef cattle by radial immunodiffusion and brix refractometry //The Veterinary Record. – 2014. – Т. 175, №. 14. – С. 353. DOI:10.1136/vr.101590Gelsinger S. L., Smith A. M., Jones C. M., Heinrichs A. J. Comparison of radial immunodiffusion and ELISA for quantification of bovine immunoglobulin G in colostrum and plasma //Journal of dairy science. – 2015. – Т. 98, №. 6. – С. 4084-4089. DOI:10.3168/jds.2014-8491Gelsinger S. L., Smith A. M., Jones C. M., Heinrichs A. J. Comparison of radial immunodiffusion and ELISA for quantification of bovine immunoglobulin G in colostrum and plasma //Journal of dairy science. – 2015. – Т. 98, №. 6. – С. 4084-4089. DOI:10.3168/jds.2014-8491Quigley J. D., Lago A., Chapman C., Erickson P., Polo J. Evaluation of the Brix refractometer to estimate immunoglobulin G concentration in bovine colostrum //Journal of dairy science. – 2013. – Т. 96, №. 2. – С. 1148-1155. DOI:10.3168/jds.2012-5823Quigley J. D., Lago A., Chapman C., Erickson P., Polo J. Evaluation of the Brix refractometer to estimate immunoglobulin G concentration in bovine colostrum //Journal of dairy science. – 2013. – Т. 96, №. 2. – С. 1148-1155. DOI:10.3168/jds.2012-5823Bielmann V., Gillan J., Perkins N. R., Skidmore A. L., Godden S., Leslie K. E. An evaluation of Brix refractometry instruments for measurement of colostrum quality in dairy cattle //Journal of dairy science. – 2010. – Т. 93, №. 8. – С. 3713-3721 DOI:10.3168/jds.2009-2943Bielmann V., Gillan J., Perkins N. R., Skidmore A. L., Godden S., Leslie K. E. An evaluation of Brix refractometry instruments for measurement of colostrum quality in dairy cattle //Journal of dairy science. – 2010. – Т. 93, №. 8. – С. 3713-3721 DOI:10.3168/jds.2009-2943Roy J. H. B. Factors affecting susceptibility of calves to disease //Journal of dairy science. – 1980. – Т. 63, №. 4. – С. 650-664. DOI:10.3168/jds.S0022-0302(80)82987-0Roy J. H. B. Factors affecting susceptibility of calves to disease //Journal of dairy science. – 1980. – Т. 63, №. 4. – С. 650-664. DOI:10.3168/jds.S0022-0302(80)82987-0McGuirk S. M., Collins M. Managing the production, storage, and delivery of colostrum //Veterinary Clinics: Food Animal Practice. – 2004. – Т. 20, №. 3. – С. 593-603. DOI: 10.1016/j.cvfa.2004.06.005.McGuirk S. M., Collins M. Managing the production, storage, and delivery of colostrum //Veterinary Clinics: Food Animal Practice. – 2004. – Т. 20, №. 3. – С. 593-603. DOI: 10.1016/j.cvfa.2004.06.005.Osaka I., Matsui Y., Terada F. Effect of the mass of immunoglobulin (Ig) G intake and age at first colostrum feeding on serum IgG concentration in Holstein calves //Journal of dairy science. – 2014. – Т. 97, №. 10. – С. 6608-6612. DOI:10.3168/jds.2013-7571Osaka I., Matsui Y., Terada F. Effect of the mass of immunoglobulin (Ig) G intake and age at first colostrum feeding on serum IgG concentration in Holstein calves //Journal of dairy science. – 2014. – Т. 97, №. 10. – С. 6608-6612. DOI:10.3168/jds.2013-7571Desjardins-Morrissette M., Van Niekerk J. K., Haines D., Sugino T., Oba M., Steele, M. A. The effect of tube versus bottle feeding colostrum on immunoglobulin G absorption, abomasal emptying, and plasma hormone concentrations in newborn calves //Journal of dairy science. – 2018. – Т. 101, №. 5. – С. 4168-4179. DOI:10.3168/jds.2017-13904Desjardins-Morrissette M., Van Niekerk J. K., Haines D., Sugino T., Oba M., Steele, M. A. The effect of tube versus bottle feeding colostrum on immunoglobulin G absorption, abomasal emptying, and plasma hormone concentrations in newborn calves //Journal of dairy science. – 2018. – Т. 101, №. 5. – С. 4168-4179. DOI:10.3168/jds.2017-13904Corley L., Staley T., Bush L., Jones E. Influence of colostrum on transepithelial movement of Escherichia coli 055// Journal of dairy science – 1977. – T. 60, № 9. – C. 1416–1421. DOI:10.3168/jds.S0022-0302(77)84046-0Corley L., Staley T., Bush L., Jones E. Influence of colostrum on transepithelial movement of Escherichia coli 055// Journal of dairy science – 1977. – T. 60, № 9. – C. 1416–1421. DOI:10.3168/jds.S0022-0302(77)84046-0Mohanta K. P., Swain S. K., Das P., Lalmuansangi R. B., Rai S. Quality and composition of bovine colostrum //Agri-IndiaTODAY. – 2021. – №7. – C. 6-21Mohanta K. P., Swain S. K., Das P., Lalmuansangi R. B., Rai S. Quality and composition of bovine colostrum //Agri-IndiaTODAY. – 2021. – №7. – C. 6-21Meylan M., Rings D. M., Shulaw W. P., Kowalski J. J., Bech-Nielsen S., Hoffsis G. F. Survival of Mycobacterium paratuberculosis and preservation of immunoglobulin G in bovine colostrum under experimental conditions simulating pasteurization //American journal of veterinary research. – 1996. – Т. 57, №. 11. – С. 1580-1585. DOI:10.2460/ajvr.1996.57.11.1580Meylan M., Rings D. M., Shulaw W. P., Kowalski J. J., Bech-Nielsen S., Hoffsis G. F. Survival of Mycobacterium paratuberculosis and preservation of immunoglobulin G in bovine colostrum under experimental conditions simulating pasteurization //American journal of veterinary research. – 1996. – Т. 57, №. 11. – С. 1580-1585. DOI:10.2460/ajvr.1996.57.11.1580Godden S. M., Smith S., Feirtag J. M., Green L. R., Wells S. J., Fetrow J. P. Effect of on-farm commercial batch pasteurization of colostrum on colostrum and serum immunoglobulin concentrations in dairy calves //Journal of dairy science. – 2003. – Т. 86, №. 4. – С. 1503-1512. DOI:10.3168/jds.S0022-0302(03)73736-9Godden S. M., Smith S., Feirtag J. M., Green L. R., Wells S. J., Fetrow J. P. Effect of on-farm commercial batch pasteurization of colostrum on colostrum and serum immunoglobulin concentrations in dairy calves //Journal of dairy science. – 2003. – Т. 86, №. 4. – С. 1503-1512. DOI:10.3168/jds.S0022-0302(03)73736-9Johnson J. L., Godden S. M., Molitor T., Ames T., Hagman D. Effects of feeding heat-treated colostrum on passive transfer of immune and nutritional parameters in neonatal dairy calves //Journal of dairy science. – 2007. – Т. 90, №. 11. – С. 5189-5198. DOI:10.3168/jds.2007-0219Johnson J. L., Godden S. M., Molitor T., Ames T., Hagman D. Effects of feeding heat-treated colostrum on passive transfer of immune and nutritional parameters in neonatal dairy calves //Journal of dairy science. – 2007. – Т. 90, №. 11. – С. 5189-5198. DOI:10.3168/jds.2007-0219Armengol R., Fraile L. Colostrum and milk pasteurization improve health status and decrease mortality in neonatal calves receiving appropriate colostrum ingestion //Journal of dairy science. – 2016. – Т. 99, №. 6. – С. 4718-4725. DOI:10.3168/jds.2015-10728Armengol R., Fraile L. Colostrum and milk pasteurization improve health status and decrease mortality in neonatal calves receiving appropriate colostrum ingestion //Journal of dairy science. – 2016. – Т. 99, №. 6. – С. 4718-4725. DOI:10.3168/jds.2015-10728Waldner C. L., Rosengren L. B. Factors associated with serum immunoglobulin levels in beef calves from Alberta and Saskatchewan and association between passive transfer and health outcomes // The Canadian veterinary journal. – 2009. – Т. 50, №. 3. – С. 275.Waldner C. L., Rosengren L. B. Factors associated with serum immunoglobulin levels in beef calves from Alberta and Saskatchewan and association between passive transfer and health outcomes // The Canadian veterinary journal. – 2009. – Т. 50, №. 3. – С. 275.Murray C., Veira D., Nadalin A. et al. The effect of dystocia on physiological and behavioral characteristics related to vitality and passive transfer of immunoglobulins in newborn Holstein calves // The Canadian veterinary journal – 2015. – T. 79, № 2. – C. 109–119Murray C., Veira D., Nadalin A. et al. The effect of dystocia on physiological and behavioral characteristics related to vitality and passive transfer of immunoglobulins in newborn Holstein calves // The Canadian veterinary journal – 2015. – T. 79, № 2. – C. 109–119Barrier A., Ruelle E., Haskell M., Dwyer C. Effect of a difficult calving on the vigour of the calf, the onset of maternal behaviour, and some behavioural indicators of pain in the dam//Preventive Veterinary Medicine. – 2012. – Т. 103, №. 4. – С. 248-256. DOI:10.1016/j.prevetmed.2011.09.001Barrier A., Ruelle E., Haskell M., Dwyer C. Effect of a difficult calving on the vigour of the calf, the onset of maternal behaviour, and some behavioural indicators of pain in the dam//Preventive Veterinary Medicine. – 2012. – Т. 103, №. 4. – С. 248-256. DOI:10.1016/j.prevetmed.2011.09.001Staněk S., Nejedlá E., Fleischer P., Pechová A., Šlosárková S. Prevalence of failure of passive transfer of immunity in dairy calves in the Czech Republic// Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. – 2019. – T. 67, № 1. – C. 163–172/ DOI:10.11118/actaun201967010163Staněk S., Nejedlá E., Fleischer P., Pechová A., Šlosárková S. Prevalence of failure of passive transfer of immunity in dairy calves in the Czech Republic// Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. – 2019. – T. 67, № 1. – C. 163–172/ DOI:10.11118/actaun201967010163Homerosky E. R., Timsit E., Pajor E. A., Kastelic J. P., Windeyer M. C. Predictors and impacts of colostrum consumption by 4 h after birth in newborn beef calves //The Veterinary Journal. – 2017. – Т. 228. – С. 1-6. DOI:10.1016/j.tvjl.2017.09.003Homerosky E. R., Timsit E., Pajor E. A., Kastelic J. P., Windeyer M. C. Predictors and impacts of colostrum consumption by 4 h after birth in newborn beef calves //The Veterinary Journal. – 2017. – Т. 228. – С. 1-6. DOI:10.1016/j.tvjl.2017.09.003Drikic M., Windeyer C., Olsen S., Fu Y., Doepel L., De Buck J. Determining the IgG concentrations in bovine colostrum and calf sera with a novel enzymatic assay //Journal of animal science and biotechnology. – 2018. – Т. 9. – С. 1-9. DOI:10.1186/s40104-018-0287-4Drikic M., Windeyer C., Olsen S., Fu Y., Doepel L., De Buck J. Determining the IgG concentrations in bovine colostrum and calf sera with a novel enzymatic assay //Journal of animal science and biotechnology. – 2018. – Т. 9. – С. 1-9. DOI:10.1186/s40104-018-0287-4Федоров Ю. Н. и др. Диагностические методы оценки передачи пассивного иммунитета у новорожденных телят //Ветеринарный врач. – 2022. – №. 5. – С. 60-65. DOI:10.33632/1998-698Х.2021_7_15Федоров Ю. Н. и др. Диагностические методы оценки передачи пассивного иммунитета у новорожденных телят //Ветеринарный врач. – 2022. – №. 5. – С. 60-65. DOI:10.33632/1998-698Х.2021_7_15Weaver D.M., Tyler J.W., VanMetre D.C., Hostetler D.E. Barrington G.M. Passive Transfer of Colostral Immunoglobulins in Calves // Journal of veterinary internal medicine. – 2000. – Т. 14, №. 6. – С. 569- 577. DOI: 10.1892/0891-6640(2000)0142.3.co;2Weaver D.M., Tyler J.W., VanMetre D.C., Hostetler D.E. Barrington G.M. Passive Transfer of Colostral Immunoglobulins in Calves // Journal of veterinary internal medicine. – 2000. – Т. 14, №. 6. – С. 569- 577. DOI: 10.1892/0891-6640(2000)0142.3.co;2Chelack B. J., Morley P. S., Haines D. M. Evaluation of methods for dehydration of bovine colostrum for total replacement of normal colostrum in calves // The Canadian Veterinary Journal. – 1993. – Т. 34, № 7. – С. 407.Chelack B. J., Morley P. S., Haines D. M. Evaluation of methods for dehydration of bovine colostrum for total replacement of normal colostrum in calves // The Canadian Veterinary Journal. – 1993. – Т. 34, № 7. – С. 407.Wild D. The Immunoassay Handbook: Theory and Applications of Ligand Binding, ELISA and Related Techniques. – 4th ed. – Oxford: Elsevier, 2013. – 1036 p.Wild D. The Immunoassay Handbook: Theory and Applications of Ligand Binding, ELISA and Related Techniques. – 4th ed. – Oxford: Elsevier, 2013. – 1036 p.Ameri M., Wilkerson M. J. Comparison of two commercial radial immunodiffusion assays for detection of bovine immunoglobulin G in newborn calves // Journal of Veterinary Diagnostic Investigation. – 2008. – Т. 20, № 3. – С. 333–336. DOI:10.1177/10406387080200031Ameri M., Wilkerson M. J. Comparison of two commercial radial immunodiffusion assays for detection of bovine immunoglobulin G in newborn calves // Journal of Veterinary Diagnostic Investigation. – 2008. – Т. 20, № 3. – С. 333–336. DOI:10.1177/10406387080200031Dunn A. et al. Comparison of single radial immunodiffusion and ELISA for the quantification of immunoglobulin G in bovine colostrum, milk and calf sera //Journal of Applied Animal Research. – 2018. – Т. 46, №. 1. – С. 758-765. DOI:10.1080/09712119.2017.1394860Dunn A. et al. Comparison of single radial immunodiffusion and ELISA for the quantification of immunoglobulin G in bovine colostrum, milk and calf sera //Journal of Applied Animal Research. – 2018. – Т. 46, №. 1. – С. 758-765. DOI:10.1080/09712119.2017.1394860Etzel L. R., Strohbehn R. E., McVicker J. K. Development of an automated turbidimetric immunoassay for quantification of bovine serum immunoglobulin G //American journal of veterinary research. – 1997. – Т. 58, №. 11. – С. 1201-1205 DOI:10.2460/ajvr.1997.58.11.1201Etzel L. R., Strohbehn R. E., McVicker J. K. Development of an automated turbidimetric immunoassay for quantification of bovine serum immunoglobulin G //American journal of veterinary research. – 1997. – Т. 58, №. 11. – С. 1201-1205 DOI:10.2460/ajvr.1997.58.11.1201Alley M. L., Haines D. M., Smith G. W. Evaluation of serum immunoglobulin G concentrations using an automated turbidimetric immunoassay in dairy calves //Journal of dairy science. – 2012. – Т. 95, №. 8. – С. 4596-4599. DOI:10.3168/jds.2012-5420Alley M. L., Haines D. M., Smith G. W. Evaluation of serum immunoglobulin G concentrations using an automated turbidimetric immunoassay in dairy calves //Journal of dairy science. – 2012. – Т. 95, №. 8. – С. 4596-4599. DOI:10.3168/jds.2012-5420Sutter F., Rauch E., Erhard M., Sargent R., Weber C., Heuwieser W., Borchardt S. Evaluation of different analytical methods to assess failure of passive transfer in neonatal calves //Journal of dairy science. – 2020. – Т. 103, №. 6. – С. 5387-5397 DOI:10.3168/jds.2019-17928Sutter F., Rauch E., Erhard M., Sargent R., Weber C., Heuwieser W., Borchardt S. Evaluation of different analytical methods to assess failure of passive transfer in neonatal calves //Journal of dairy science. – 2020. – Т. 103, №. 6. – С. 5387-5397 DOI:10.3168/jds.2019-17928Cuttance E. L., Regnerus C., Laven R. A. A review of diagnostic tests for diagnosing failure of transfer of passive immunity in dairy calves in New Zealand //New Zealand veterinary journal. – 2019. – Т. 67, №. 6. – С. 277-286. DOI:10.1080/00480169.2019.1654945Cuttance E. L., Regnerus C., Laven R. A. A review of diagnostic tests for diagnosing failure of transfer of passive immunity in dairy calves in New Zealand //New Zealand veterinary journal. – 2019. – Т. 67, №. 6. – С. 277-286. DOI:10.1080/00480169.2019.1654945Buczinski S., Gicquel E., Fecteau G., Takwoingi Y., Chigerwe M., Vandeweerd J. M. Systematic review and meta‐analysis of diagnostic accuracy of serum refractometry and brix refractometry for the diagnosis of inadequate transfer of passive immunity in calves //Journal of veterinary internal medicine. – 2018. – Т. 32, №. 1. – С. 474-483. DOI:10.1111/jvim.14893Buczinski S., Gicquel E., Fecteau G., Takwoingi Y., Chigerwe M., Vandeweerd J. M. Systematic review and meta‐analysis of diagnostic accuracy of serum refractometry and brix refractometry for the diagnosis of inadequate transfer of passive immunity in calves //Journal of veterinary internal medicine. – 2018. – Т. 32, №. 1. – С. 474-483. DOI:10.1111/jvim.14893Deelen S. M., Ollivett T. L., Haines D. M., Leslie K. E. Evaluation of a Brix refractometer to estimate serum immunoglobulin G concentration in neonatal dairy calves //Journal of dairy science. – 2014. – Т. 97, №. 6. – С. 3838-3844. DOI:10.3168/jds.2014-7939Deelen S. M., Ollivett T. L., Haines D. M., Leslie K. E. Evaluation of a Brix refractometer to estimate serum immunoglobulin G concentration in neonatal dairy calves //Journal of dairy science. – 2014. – Т. 97, №. 6. – С. 3838-3844. DOI:10.3168/jds.2014-7939Hernandez D., Nydam D. V., Godden S. M., Bristol L. S., Kryzer A., Ranum J., Schaefer D. Brix refractometry in serum as a measure of failure of passive transfer compared to measured immunoglobulin G and total protein by refractometry in serum from dairy calves //The Veterinary Journal. – 2016. – Т. 211. – С. 82-87. DOI:10.1016/j.tvjl.2015.11.004Hernandez D., Nydam D. V., Godden S. M., Bristol L. S., Kryzer A., Ranum J., Schaefer D. Brix refractometry in serum as a measure of failure of passive transfer compared to measured immunoglobulin G and total protein by refractometry in serum from dairy calves //The Veterinary Journal. – 2016. – Т. 211. – С. 82-87. DOI:10.1016/j.tvjl.2015.11.004Cuttance E. L., Mason W. A., Denholm K. S., Laven R. A. Comparison of diagnostic tests for determining the prevalence of failure of passive transfer in New Zealand dairy calves //New Zealand veterinary journal. – 2017. – Т. 65, №. 1. – С. 6-13. DOI: 10.1080/00480169.2016.1230525Cuttance E. L., Mason W. A., Denholm K. S., Laven R. A. Comparison of diagnostic tests for determining the prevalence of failure of passive transfer in New Zealand dairy calves //New Zealand veterinary journal. – 2017. – Т. 65, №. 1. – С. 6-13. DOI: 10.1080/00480169.2016.1230525Thornhill J. B., Krebs G. L., Petzel C. E. Evaluation of the Brix refractometer as an on‐farm tool for the detection of passive transfer of immunity in dairy calves //Australian veterinary journal. – 2015. – Т. 93, №. 1-2. – С. 26-30. DOI: 10.1111/avj.12287Thornhill J. B., Krebs G. L., Petzel C. E. Evaluation of the Brix refractometer as an on‐farm tool for the detection of passive transfer of immunity in dairy calves //Australian veterinary journal. – 2015. – Т. 93, №. 1-2. – С. 26-30. DOI: 10.1111/avj.12287Djedović R., Bogdanović V., Stanojević D., Nemes Z., Gaspardy A., Cseh S. Involuntary reduction in vigour of calves born from sexed semen //Acta Veterinaria Hungarica. – 2016. – Т. 64, №. 2. – С. 229-238. DOI:10.1556/004.2016.023Djedović R., Bogdanović V., Stanojević D., Nemes Z., Gaspardy A., Cseh S. Involuntary reduction in vigour of calves born from sexed semen //Acta Veterinaria Hungarica. – 2016. – Т. 64, №. 2. – С. 229-238. DOI:10.1556/004.2016.023Tubman L. M., Brink Z., Suh T. K., Seidel Jr G. E. Characteristics of calves produced with sperm sexed by flow cytometry/cell sorting//Journal of animal science. – 2004. – Т. 82., №. 4. – С. 1029-1036. DOI:10.2527/2004.8241029x.Tubman L. M., Brink Z., Suh T. K., Seidel Jr G. E. Characteristics of calves produced with sperm sexed by flow cytometry/cell sorting//Journal of animal science. – 2004. – Т. 82., №. 4. – С. 1029-1036. DOI:10.2527/2004.8241029x.

The authors declare that there are no conflicts of interest present.