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Comparing the Effect of Oral Supplementation of Vitamin E Injective Vitamin E and Selenium or Both during Late Pregnancy on Production and Reproductive Performance and Immune Function of Dairy Cows and Calves

机译:比较妊娠后期口服维生素E注射性维生素E和硒或两者对奶牛和犊牛生产和生殖性能及免疫功能的影响

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摘要

The object of this study was to determine the effect of prepartum supplementation of vitamin E with or without injective vitamin E and selenium (Se) on productive and reproductive performances and immune function in dairy cows. Sixty multiparous Holstein dairy cows were divided randomly into three groups at the end of gestation. Cows in each group received one of three treatments: (1) a single intramuscular (im) injection of vit. E + selenium 3 weeks prepartum; (2) daily supplementation of oral vit. E given from 3 weeks prepartum to parturition; (3) injective vit. E + Se with daily supplementation of oral vit. E. Blood samples were collected from cows at calving and from calves at 0 and 7 days of age. Concentration of IgG in serum of cows and calves as well as in colostrum was determined. No significant differences among treatments occurred in the concentrations of IgG, animal, and calf production and reproduction performance. Due to the lack of significant difference between injection and oral supplementation, it is recommended to replace the injection with oral supplementation.
机译:这项研究的目的是确定产前补充维生素E或不注射维生素E和硒(Se)对奶牛生产和生殖性能以及免疫功能的影响。在妊娠结束时,将60头荷斯坦产奶牛随机分为三组。每组奶牛接受以下三种治疗方法之一:(1)单次肌内注射(im)vit。产前3周E +硒; (2)每日补充口服维他命。从产前到分娩前3周给予E; (3)注射式vit。 E + Se,每日补充口服维生素。 E.从产犊的母牛以及0和7天龄的犊牛收集血液样品。测定了牛和犊牛血清以及初乳中IgG的浓度。 IgG,动物和小牛的生产和繁殖性能的浓度在处理之间无显着差异。由于注射剂和口服补充剂之间没有显着差异,建议用口服补充剂代替注射剂。

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