Muscling
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Direct and maternal annual genetic changes for selected traits at weaning and yearling in beef cattle
ABSTRACT. Heritability and direct and maternal genetic changes were estimated in Nellore cattle for the following traits: birth to weaning weight gain (BWG), weaning to yearling weight gain (YWG), weaning conformation (WC), weaning precocity (WP), weaning muscling (WM), yearling conformation (YC), yearling precocity (YP), yearling muscling (YM) and yearling
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
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2. Genetic parameters of age at first calving, weight gain, and visual scores in Nelore heifers
ABSTRACT This study aimed at estimating the heritability of age at first calving and of performance traits included in the selection index and the genetic correlations between age at first calving and these performance traits. Data were extracted from the Conexão Delta G database and only data from herds in which heifers were bred younger than 24 months of
R. Bras. Zootec.. Publicado em: 2017-04
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3. Correlations of visual scores, carcass traits, feed efficiency and retail product yield in Nellore cattle
The growing use of visual scores (VS) and ultrasound (US) for carcass evaluation in breeding programs, calls for a knowledge of the relationships between these traits and other relevant characteristics, such as feed efficiency and production of commercial cuts. The objective of this study was to evaluate correlations between body visual scores and carcass tr
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-02
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4. Estimação de parâmetros genéticos para características de crescimento, reprodução e categóricas em uma população de bovinos de corte compostos (Bos taurus x Box indicus) sob abordagem bayesiana e modelos lineares generalizados mistos / Estimation of genetic parameters for traits of growth, reproduction and categorical in a population of composite beef cattle (Bos taurus x Bos indicus) in Bayesian approach and generalized linear mixed models
Os objetivos deste trabalho foram avaliar diferentes modelos de seleção com base nos efeitos aleatórios maternos considerados para características de crescimento e perímetro escrotal, estimar parâmetros genéticos para pesos do nascimento aos 12 meses (pesos ao nascer, a desmama e aos 12 meses de idade); perímetro escrotal aos 12 meses e correlações
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2012
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5. Estimation of additive direct and maternal genetic and non additive effects and prediction of the performance of weights, scrotal circumference and muscling scores in a Bos taurus x Bos indicus, composite beef cattle population. / Estimação de efeitos genéticos aditivos diretos e maternos e não aditivos e, predição do desempenho de pesos, perímetro escrotal e musculosidade em uma população de bovinos de corte compostos (Bos taurus x Bos indicus)
Data of weights at birth, weaning, 390 days, weight gain from weaning to 390 days, scrotal circumference and muscling scores at 390 days of age of a population used in the formation of the Montana Tropical® beef composite, raised under tropical conditions, were analyzed under three different models to: i) determine genetic and environment effects ii) determ
Publicado em: 2005
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6. Double muscling in cattle due to mutations in the myostatin gene
Myostatin (GDF-8) is a member of the transforming growth factor β superfamily of secreted growth and differentiation factors that is essential for proper regulation of skeletal muscle mass in mice. Here we report the myostatin sequences of nine other vertebrate species and the identification of mutations in the coding sequence of bovine myostatin in two bre
The National Academy of Sciences of the USA.