Age at first calving effect on economic traits in Deoni cattle of Maharashtra

In the present study 544 lactations of 145 Deoni females were included. The data was divided into seven groups from G₁ to G₇ on the basis of age at first calving (AFC). Further the effect of AFC on milk yield (MY), service period (SP) and intercalving period (ICP) were studied. The overall (Least Squares Means) LSM for the effect of AFC on MY, SP and ICP in Deoni cattle were reported as 518.229 ± 22.437 kg, 286.572 ± 13.379 days and 566.109 ± 13.639 days, respectively. The effect of AFC on MY of group G₂ and G₃ was seen to be highly significant on other groups. Higher AFC in Deoni cattle lowered down the milk production considerably after G₃. Whereas, the effect of AFC on SP and ICP was found to be non-significant in Deoni breed of cattle.