The Performance of IgM Colostrum of Friesian Holstein Dairy Cows at Different Lactation Periods

Abstract

This research identified the performance of colostrum of Friesian Holstein (FH) dairy cows Immunoglobulin M (IgM) in different lactation periods. This research was conducted with observational and laboratory analysis of Dairy Farmers Cooperative (KPSP) Setia Kawan Nongkojajar, Pasuruan, East Java. The purposive sampling of 15 lactating dairy cows’s colostrum was used in varied lactation periods (lactation 1-5) for 5 days with sampling time at 5 AM and 3 PM Indonesian Time. ELISA analyzed the IgM from the colostrum sample. The IgM levels were statistically analyzed using one-way ANOVA test at a 95% confidence interval followed by Tukey’s HSD test. This study suggested that IgM levels in the colostrum affected by lactation periods and milking days. Research results show that the lactation period of Friesian Holstein dairy cows did not significantly increase the colostrum's IgM level. However, based on the day of milking, the second day of milking had the best performance and signification for colostrum IgM levels with an average IgM value of 2.359±0.688mg/mL.