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Estimates of genetic parameters for carcass, growth and reproductive traits in Nellore cattle



Estimates of genetic parameters for carcass, growth and reproductive traits in Nellore cattle



Livestock Science 155(1): 1-7



The objective of this study was to estimate genetic parameters for female mature weight (FMW), age at first calving (AFC), weight gain from birth to 120 days (WG_B_120), from 210 to 365 days (WG_210_365), rib eye area (REA), back fat thickness (BF), rump fat (RF) and body weight at scanning date (BWS) using single and multiple-trait animal models by the REML method from Nellore cattle data. The estimates of heritability ranged from 0.163 0.011 for WG_210_365 to 0.309 0.028 for RF using the single-trait model and from 0.163 0.010 for WG_210_365 to 0.382 0.025 for BWS using the multiple-trait model. The estimates of genetic correlations ranged from ?0.35 0.08 between AFC with BF to 0.69 0.04 between WG_B_120 with BWS. Selection for weights gains, REA, and BWS can improve FMW.

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Accession: 036872545

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DOI: 10.1016/j.livsci.2013.04.004


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