Risk factors associated with failed transfer of passive immunity in male and female dairy calves: A 2008 retrospective cross-sectional study

This retrospective cross-sectional study was designed to identify risk factors associated with failed transfer of passive immunity (FTPI) and to determine differences in colostrum management between male and female dairy calves. Research technicians visited a total of 16 commercial dairy farms weekl...

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Bibliographic Details
Published in:Journal of dairy science 2020-04, Vol.103 (4), p.3521-3528
Main Authors: Renaud, D.L., Waalderbos, K.M., Beavers, L., Duffield, T.F., Leslie, K.E., Windeyer, M.C.
Format: Article
Language:English
Subjects:
calf
colostrum management
passive immunity
serum total protein
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Summary:This retrospective cross-sectional study was designed to identify risk factors associated with failed transfer of passive immunity (FTPI) and to determine differences in colostrum management between male and female dairy calves. Research technicians visited a total of 16 commercial dairy farms weekly. For each calf born on these farms, the farm personnel completed a birth record to document the colostrum management practices provided, level of calving assistance, calf sex, and time of birth. On the weekly visits to the farms, the technicians collected blood from calves that were 1 to 7 d of age. Serum was separated via centrifugation and the concentration of serum total protein (STP) was determined using a digital refractometer. Failed transfer of passive immunity was defined as calves having an STP of
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.2019-17397