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Pasteurization And Freezing Effect On Colostrum Characteristics, Morbidity, Igg Absorption, And Growth Rates Of Holstein Heifer Calves, Rob Diepersloot
Pasteurization And Freezing Effect On Colostrum Characteristics, Morbidity, Igg Absorption, And Growth Rates Of Holstein Heifer Calves, Rob Diepersloot
Dairy Science
The objective of this study was to determine if fresh frozen, pasteurized frozen, or fresh refrigerated colostrum impacted morbidity, growth rates, and the overall serum immunoglobulins (IgGs) in newborn calves. The second objective was to compare the effects that pasteurization and freezing had on colostrum IgG concentration and total bacteria counts compared to raw refrigerated colostrum. A controlled trial was completed on a 6,000-cow dairy in California where colostrum was harvested twice daily, pooled, and then divided into three different treatment groups and processed accordingly. One treatment was pasteurized at 60oC for 60 min and then frozen, the …