Title:	Genetic parameters for visual scores, growth and carcass traits in Nellore Cattle.
Authors:	SOARES, B. B. BRUNES, L. C. BALDI, F. S. CARMO, A. S. do PEREIRA, L. S. CARVALHO, R. A. NARCISO, M. G. AMORIM, S. T. SAINZ, R. D. MAGNABOSCO, C. de U.
Affiliation:	BYANKA B. SOARES; LUDMILLA C. BRUNES; FERNANDO SEBASTIAN BALDI; ADRIANA S. DO CARMO; LETÍCIA S. PEREIRA; RAFAEL A. CARVALHO; MARCELO G. NARCISO; SABRINA T. AMORIM; ROBERTO DANIEL SAINZ; CLAUDIO ULHOA MAGNABOSCO, CPAC.
Date Issued:	2024
Citation:	Anais da Academia Brasileira de Ciências, v. 96, n. 1, e20230010, 2024.
Description:	Growth and carcass traits are essential selection criteria for beef cattle breeding programs. However, it is necessary to combine these measurements with body composition traits to meet the demand of the consumer market. This study aimed to estimate the genetic parameters for visual scores, growth (pre and post-weaning weights), and carcass (rib eye area (REA), back and rump fat thickness) traits in Nellore cattle using Bayesian inference. Data from 12,060 animals belonging to the HoRa Hofig Ramos herd were used. Morphological traits were evaluated by the MERCOS methodology. The heritability estimates obtained ranged from low to high magnitude, from 0.15 to 0.28 for visual scores, 0.13 to 0.44 for growth, and from 0.42 to 0.46 for carcass traits. Genetic correlations between visual scores and growth traits were generally of moderate to high magnitudes, however, visual scores showed low correlations with carcass traits, except between sacral bone and structure and REA. Selection for visual score traits can lead to favorable responses in body weight and vice versa, but the same is not true for carcass traits. Morphological categorical traits can be used as complementary tools that add value to selection.
Thesagro:	Gado Nelore Gado Zebu Genética Animal Carcaça
ISSN:	1678-2690
DOI:	10.1590/0001-3765202420230010
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAC)