TY - JOUR
T1 - Short communication
T2 - Variation in serum immunoglobulin G concentrations from birth to 112 days of age in Holstein calves fed a commercial colostrum replacer or maternal colostrum
AU - Lopez, A. J.
AU - Jones, C. M.
AU - Geiger, A. J.
AU - Heinrichs, A. J.
N1 - Funding Information:
The authors thank the employees of the Penn State Dairy Farm who helped with calvings and calf care. We also acknowledge Zinpro Corporation (Eden Prairie, MN) for provision of the CR used in the study and partial funding of the study. This research was a component of NC-2042; Management Systems to Improve the Economic and Environmental Sustainability of Dairy Enterprises. The authors have not stated any conflicts of interest.
Publisher Copyright:
© 2020 American Dairy Science Association
PY - 2020/8
Y1 - 2020/8
N2 - Serum IgG concentrations in dairy calves change throughout their first weeks of life, peaking at 24 h and then steadily decreasing until calves begin to produce endogenous IgG. The objective of this study was to observe serum IgG dynamics from birth until 16 wk of life in calves fed either maternal colostrum (MC) or colostrum replacer (CR). A total of 44 Holstein calves were randomly assigned to 1 of the 4 colostrum treatments and followed throughout the study. Treatments consisted of feeding high-quality MC, low-quality MC supplemented with CR, or 1 of 2 distinct levels of IgG concentration from CR. Overall, the interaction between type of colostrum fed and sampling time was significant. Individual differences for this effect were found at d 1, 7, 14, 21, 28, and 98, while the other time points were not different.
AB - Serum IgG concentrations in dairy calves change throughout their first weeks of life, peaking at 24 h and then steadily decreasing until calves begin to produce endogenous IgG. The objective of this study was to observe serum IgG dynamics from birth until 16 wk of life in calves fed either maternal colostrum (MC) or colostrum replacer (CR). A total of 44 Holstein calves were randomly assigned to 1 of the 4 colostrum treatments and followed throughout the study. Treatments consisted of feeding high-quality MC, low-quality MC supplemented with CR, or 1 of 2 distinct levels of IgG concentration from CR. Overall, the interaction between type of colostrum fed and sampling time was significant. Individual differences for this effect were found at d 1, 7, 14, 21, 28, and 98, while the other time points were not different.
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U2 - 10.3168/jds.2020-18400
DO - 10.3168/jds.2020-18400
M3 - Article
C2 - 32534921
AN - SCOPUS:85086413904
VL - 103
SP - 7535
EP - 7539
JO - Journal of Dairy Science
JF - Journal of Dairy Science
SN - 0022-0302
IS - 8
ER -