2016
DOI: 10.1007/s11250-016-1215-2
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Evaluation of body weight and visual scores for genetic improvement of Nelore cattle

Abstract: The aims of our study were to estimate genetic parameters for body weight and visual scores and to evaluate their inclusion as selection criteria in the Nelore breeding program in Brazil. The traits studied were the body weight adjusted to 210 (W210) and to 450 (W450) days of age and visual scores for body structure, finishing precocity, and muscling evaluated at weaning (BS, FP, and MS) and yearling (BS, FP, and MS) ages. A total of 33,242, 26,259, 23,075, and 26,057 observations were considered to analyze W2… Show more

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Cited by 11 publications
(7 citation statements)
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“…Direct selection for yearling visual score traits may promote indirect selection for BW, such that visual scores would be an indicator of the animal's biotype. These results are consistent with the results reported in the literature (Bertipaglia et al (2012), with genetic correlation results of 0.77, 0.75, and 0.58 for BS, FP, and MS, with BW at 18 months of age, respectively; and Paterno et al (2017)).…”
Section: Gebv_mssupporting
confidence: 93%
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“…Direct selection for yearling visual score traits may promote indirect selection for BW, such that visual scores would be an indicator of the animal's biotype. These results are consistent with the results reported in the literature (Bertipaglia et al (2012), with genetic correlation results of 0.77, 0.75, and 0.58 for BS, FP, and MS, with BW at 18 months of age, respectively; and Paterno et al (2017)).…”
Section: Gebv_mssupporting
confidence: 93%
“…) are consistent with results estimated byPaterno et al (2017), who worked with Nelore cattle and their database was part of the data used in the present study. They estimated genetic correlations for BS, FP, and MS visual scores measured in yearlings with BW measured at 210 (W210) and 450 (W450) days of age.…”
supporting
confidence: 93%
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“…Animal performance and body composition in the pre-weaning and post-weaning phases affect the quantity and quality of meat produced in the finishing phase . In this sense, selection carried out for animals presenting high visual gain in the pre-weaning phase would allow greeter weight gains at later ages, as well as a decrease in the generation interval, and improving animals' performance (PATERNO et al, 2017). However, selection for growth rate may not only change the physical and chemical aspects of meat but other production traits, since it can affect the body maturity, muscle fiber type/morphology, and fat deposition in the carcass (DA COSTA et al, 2019).…”
Section: Introductionmentioning
confidence: 99%