21-Title: Effect of non-genetic factors on first lactation test day milk yield in Murrah buffaloes
Authors: Sumit Kumar, Vijay Kumar and AK Chakravarty
Source: Ruminant Science (2014)-3(1):99-103.
How to cite this manuscript: Kumar Sumit, Kumar Vijay and Chakravarty AK (2014). Effect of non-genetic factors on first lactation test day milk yield in Murrah buffaloes. Ruminant Science 3(1):99-103.
Data pertaining to first lactation record on 342 Murrah buffaloes calved and completed first lactations, maintained at cattle yard, National Dairy Research Institute, Karnal were analyzed. The mean WTDMY and mean MTDMY were 6.61±0.04 kg and 6.85±0.02 kg in first lactation. It was observed that only 23 first lactation WTDMY out of 43 WTDMY was significantly affected by season of calving whereas all first lactation WTDMY was significantly affected by year of calving. It was observed that only fifth (126th), eighth (216th), ninth (246th) and eleventh (305th) first lactation MTDMY was significantly affected by season of calving whereas all first lactation MTDMY was significantly affected by year of calving.
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