Comparison of Feeding Lacteal- and Plasma-derived Commercial Colostrum Replacers on Fecal Scores and Pathogen Shedding in Heifer Dairy Calves
DOI:
https://doi.org/10.21423/aabppro20104119Keywords:
passive transfer, FPT, IgG, dairy cattle, colostrum, colostrum replacer, lacteal-derived, plasma-derived, scours, sheddingAbstract
Failure of passive transfer (FPT), defined as serum IgG <10 mg/mL at 24-48 hours of age, is an important problem on dairy farms. If an adequate supply of high-quality colostrum is not available, producers may feed a colostrum replacer (CR) product. However, studies are lacking to compare the effects of different CR products on passive transfer and calf health during the preweaning period. The objectives of this study were to describe the effect of feeding two different commercially available CR products, one lacteal-derived (LD CR) and one plasma-derived (PD CR) on 1) serum IgG levels during the first nine weeks, 2) the risk for development of scours, and 3) the risk for fecal shedding of common enteric pathogens in the first 14 days of age.