Effect of feeding colostrum that was heat-treated with the Perfect Udder~R System on passive transfer of immunoglobulin G in neonatal Jersey calves

摘要

Heat-treating colostrum by the use of batch pasteurizers is an effective method to reduce bacterial contamination while protecting immunoglobulins and enhancing passive transfer and health in calves. The Perfect Udder~R bag (Dairy Tech Inc., Windsor,CO) is designed to heat-treat 1 gallon (~4 L) of colostrum at a time prior to storage and feeding; however, this system has not been validated. The objective of this study was to compare passive transfer of IgG in neonatal calves that were fed colostrumthat was heat-treated with the Perfect Udder~R system, heat-treated with a batch pasteurizer (positive control), or fresh-refrigerated or fresh-frozen (negative controls).