Genetic parameters and effect of non genetic factors on early performance traits of murrah buffalo: A review

The success of Indian dairy industry is much dependent on productivity and efficient reproduction performance of Murrah buffaloes. .It is a established fact that first lactation yield is a good indicator of lifetime performance but still there is further need to study the relationship between first, later lactations and lifetime performance traits for overall better evaluation of genetic worth of the female individual’s own performance and for ranking of sires. The literature pertinent to genetic and phenotypic parameters of early performance traits viz. first lactation milk yield, first peak milk yield, first lactation milk yield per day of first lactation length, first service period, first calving interval and non genetic factors affecting were reviewed. All the early productive and reproductive traits were affected by herd, year, season of calving and age at first calving (linear and quadratic effects).