Genetic parameters for frame size and carcass traits in Nellore cattle

被引：0
作者：
A. G. Barro
B. S. Marestone
E. R. dos S.
G. A. Ferreira
J. G. Vero
D. K. Terto
C. A. de S. D. Muniz
A. M. Bridi
机构：
[1] Londrina State University,Postgraduate Program in Animal Science
[2] Londrina State University,Department of Animal Science
[3] Londrina State University,Departament of Postgraduate Program in Animal Science
[4] Londrina State University,Department of Animal Science
来源：
Tropical Animal Health and Production | 2023年 / 55卷
关键词：
Body size; Carcass quality; Genetic correlation; Visual scores;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Our study aimed to evaluate the frame size as a genetic selection criterion as well as the association of scores with carcass characteristics measured via ultrasound to the genetic improvement of carcass quality in Nellore cattle. The variance components were estimated using the restricted maximum likelihood method for the thoracic perimeter (TP), frame size score (FRAME), yearling weight (YW), visual scores of body structure (BS), muscularity (MUSC), and precocity (PREC). The carcass traits included loin eye area (REA), backfat thickness (BF), rump fat (FR), and intramuscular fat (IF). The estimated heritabilities ranged from moderate to high. The FRAME showed a positive genetic correlation with YW (0.82 ± 0.07), TP (0.58 ± 0.09), and BS score (0.62 ± 0.07), but it had a negative correlation with the MUSC and PREC visual scores (− 0.34 ± 0.09 and − 0.50 ± 0.08, respectively). The genetic correlation between FRAME and REA was positive (0.26 ± 0.09). However, FRAME presented a correlation close to zero with BF, RF, and IF. TP had a positive genetic correlation with body size traits such as YW (0.76 ± 0.05) and BS score (0.55 ± 0.08) and with muscularity traits such as REA (0.44 ± 0.01). Frame size has the potential to be used as a parameter in the selection of precocious beef cattle, but a study of its use is necessary to determine the ideal biotype for each production system.
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[1]  
Boligon AA(2011)Genetic associations of conformation, finishing precocity and muscling visual scores with mature weight in Nellore cattle Livestock Science 135 238-243
[2]  
Mercadante MEZ(2015)Visual body-scores selection and its influence on body size and ultrasound carcass traits in Nellore cattle Journal of Animal Science 93 5597-5606
[3]  
Albuquerque LG(2021)Genetic parameters associated with meat quality of Nelore cattle at different anatomical points of longissimus: Brazilian standards Meat Science 171 108281-266
[4]  
Bonin MN(2020)Genetic correlation estimates between age at puberty and growth, reproductive, and carcass traits in young Nellore bulls Livestock Science 241 104-1866
[5]  
Ferraz JBS(2014)Características de carcaça e qualidade de carne em linhagens da raça Nellore Ciencia Rural 44 1860-1427
[6]  
Pedrosa VB(2013)Meat science and muscle Biology Symposium: Manipulating mesenchymal progenitor cell differentiation to optimize performance and carcass value of beef cattle Journal of Animal Science 91 1419-47
[7]  
Silva SL(2015)Fetal praogramming in meat production Meat Science 109 40-384
[8]  
Gomes RC(2010)Genetic correlations between categorical morphological traits in Nellore cattle by applying Bayesian analysis under a threshold animal model Journal of Animal Breeding and Genetics 127 377-4229
[9]  
Cucco DC(2012)Genetic association between body composition measured by ultrasound and visual scores in brazilian Nellore cattle Journal of Animal Science 90 4223-196
[10]  
Santana MHA(2007)Phenotypic and genetic correlations for body structure scores (frame) with productive traits and index for CEIP classification in Nellore beef cattle Genetics and Molecular Research: GMR 6 188-2367
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