Estimation of factors for standardizing lactation yield to mature equivalent basis and factors affecting 305 day mature equivalent milk yield in Frieswal cattle

Abstract

Data pertaining to 29,427 lactation records of Frieswal cows maintained at various Military Farms from 1987 to 2015 were used in the study. A prediction equation was developed for the first time for calculating the adjustment factors to mature age and various adjustment factors were calculated based on age in months. In the present study, the mature equivalent age of Frieswal cows were calculated as between 77 and 94 months of age, as the highest milk yield was produced during this age group. Results of the study also clearly indicate that the non-genetic factors like farm, season and period of calving had significant effect on the 305 day mature equivalent milk yield. So the proper management interventions should be followed to improve the performance of Frieswal cows in Military Farms.