Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States
Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States
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DOI：
10.3168/jds.2019-17955
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发表时间：
2020-08-01
影响因子：
3.5
通讯作者：
Sterner, K.
中科院分区：
文献类型：
--
作者：
Lombard, J.;Urie, N.;Sterner, K.
通过测量7日龄内的血清或血浆IgG或血清总蛋白来评估或定量小牛的被动免疫。虽然这些测量值可以了解这种重要蛋白质的循环浓度，但它们也是评估摄入初乳的所有额外益处的代表。目前用于对免疫力被动转移成功或被动转移失败的乳牛进行分类的个体乳牛标准是基于血清IgG浓度>= 10，
Passive immunity in calves is evaluated or quantified by measuring serum or plasma IgG or serum total protein within the first 7 d of age. While these measurements inform about circulating concentrations of this important protein, they are also a proxy for evaluating all of the additional benefits of colostral ingestion. The current individual calf standard for categorizing dairy calves with successful passive transfer or failure of passive transfer of immunity are based on serum IgG concentrations of >= 10 and