STUDIES ON AGE AT FIRST CALVING IN 1 2 AND 3/4 CROSSBRED CATTLE AND RELATIONSHIP AMONG REPRODUCTIVE TRAITS/

Age at first calving is a character of much economic importance to the cattle breeder. Attempts have been made for reduction in age at first carving by many workers in order to economise livestock production be cause it affects the life time production of the animals and the genet ic improvement in the breeding plan. An early age at first calving wou ld reduce the unproductive period of our cattle and hence increase the ir life productin, besides decreasing the generation interval (Saika a nd Sharma, 1977), The variation in the cliamtic conditions and availab ility of feeds and fodder influence the age at first calving.