Genetic evaluation of some first lactation traits in Murrah buffaloes
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Authors
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REETU TEWARI
Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakahnd 263 145 India
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D KUMAR
Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakahnd 263 145 India
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C B SINGH
Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakahnd 263 145 India
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HARPAL SINGH
Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakahnd 263 145 India
Keywords:
First lactation milk yield, Production traits, Reproduction traitsAbstract
A study was conducted for studying the inheritance pattern of some first lactation traits in Murrah buffaloes. Data on 577 Murrah buffaloes maintained at the farms - Firozpur, Ambala, Jallandhar, Jhansi, Lucknow, Bareilly, Agra and Pantnagar spread over 34 years was used. The traits considered were age at first calving (AFC), first calving interval (FCI), first lactation milk yield (FLMY), first lactation period (FLP), weight at first calving (FCI) and first service period (FSP). The heritability estimates (h2±S.E) for AFC, FCI, FLMY, FLP, WFC and FSP traits were found to be 0.40±0.15, 0.14±0.10, 0.31±0.14, 0.23±0.12, 0.36±0.13 and 0.06±0.0, respectively. The genetic and phenotypic correlations revealed that selection for lower age at first calving and higher lactation milk yield can be used as a selection criterion for the genetic improvement in Murrah buffaloes.Downloads
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