Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves

Background: Heat stress derived from global warming is causing major economic losses in the livestock industry. Objective: To develop a novel methodological approach for determining the influence of climatic factors on the estimation of genetic parameters for growth traits in Retinta cattle breed by...

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Autores principales:	Rosa M. Morales, Alberto Menéndez-Buxadera, Sebastián Demyda-Peyrás, Antonio Molina
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2019
Materias:	beef cattle genotype-environment interaction genetic effects global warming heat stress preweaning growth random regression reaction-norm retinta breed thi Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/67f25a7e5b024f399a03a0d31b883ede
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spelling	oai:doaj.org-article:67f25a7e5b024f399a03a0d31b883ede2021-12-01T15:32:26ZGenetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves2256-295810.17533/udea.rccp.v33n2a01https://doaj.org/article/67f25a7e5b024f399a03a0d31b883ede2019-09-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/339762https://doaj.org/toc/2256-2958Background: Heat stress derived from global warming is causing major economic losses in the livestock industry. Objective: To develop a novel methodological approach for determining the influence of climatic factors on the estimation of genetic parameters for growth traits in Retinta cattle breed by using reaction-norm models. Methods: Live weight records (n=7,753) from 3,162 Retinta calves born from 1,249 dams and 85 sires and raised in the Andalusian region (Spain) were analyzed. The effect of heat stress was measured using the temperature-humidity index, calculated with climatological data obtained from four weather stations. A bivariate-random-regression reaction-norm model was used to estimate the (co)variance components of weight until weaning in two different climatic seasons corresponding to warm and cold months. Results: The heritability pattern of individuals reared under diverse environments during the first 90 days of age was different. However, differences were not significant at the end of the growing period. Weaned calves reared during the cold season showed greater growth from 70 to 160 days in comparison with those reared during the warm season. Conclusions: Highly significant evidence of genotype-climatic condition interaction was found during the calf´s first three months of growth.Rosa M. MoralesAlberto Menéndez-BuxaderaSebastián Demyda-PeyrásAntonio MolinaUniversidad de Antioquiaarticlebeef cattlegenotype-environment interactiongenetic effectsglobal warmingheat stresspreweaning growthrandom regressionreaction-normretinta breedthiAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 33, Iss 2, Pp 134-143 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	beef cattle genotype-environment interaction genetic effects global warming heat stress preweaning growth random regression reaction-norm retinta breed thi Animal culture SF1-1100
spellingShingle	beef cattle genotype-environment interaction genetic effects global warming heat stress preweaning growth random regression reaction-norm retinta breed thi Animal culture SF1-1100 Rosa M. Morales Alberto Menéndez-Buxadera Sebastián Demyda-Peyrás Antonio Molina Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves
description	Background: Heat stress derived from global warming is causing major economic losses in the livestock industry. Objective: To develop a novel methodological approach for determining the influence of climatic factors on the estimation of genetic parameters for growth traits in Retinta cattle breed by using reaction-norm models. Methods: Live weight records (n=7,753) from 3,162 Retinta calves born from 1,249 dams and 85 sires and raised in the Andalusian region (Spain) were analyzed. The effect of heat stress was measured using the temperature-humidity index, calculated with climatological data obtained from four weather stations. A bivariate-random-regression reaction-norm model was used to estimate the (co)variance components of weight until weaning in two different climatic seasons corresponding to warm and cold months. Results: The heritability pattern of individuals reared under diverse environments during the first 90 days of age was different. However, differences were not significant at the end of the growing period. Weaned calves reared during the cold season showed greater growth from 70 to 160 days in comparison with those reared during the warm season. Conclusions: Highly significant evidence of genotype-climatic condition interaction was found during the calf´s first three months of growth.
format	article
author	Rosa M. Morales Alberto Menéndez-Buxadera Sebastián Demyda-Peyrás Antonio Molina
author_facet	Rosa M. Morales Alberto Menéndez-Buxadera Sebastián Demyda-Peyrás Antonio Molina
author_sort	Rosa M. Morales
title	Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves
title_short	Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves
title_full	Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves
title_fullStr	Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves
title_full_unstemmed	Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves
title_sort	genetic effects of season on the preweaning growth of beef cattle: a first approach to retinta calves
publisher	Universidad de Antioquia
publishDate	2019
url	https://doaj.org/article/67f25a7e5b024f399a03a0d31b883ede
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Genetic effects of season on the preweaning growth of beef cattle: a first approach to Retinta calves

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