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	Provedor de dados ArchiMer (1) R. Bras. Zootec. (1) Autor Barthelemy, Clement (1) Espasandin,Ana Carolina (1) Mattar,Maira (1) Meirelles,Sarah Laguna (1) Queiroz,Sandra Aidar de (1) Palavra-chave Threshold trait (2) Adaptation polygénique (1) Beef cattle (1) Caractère à seuil (1) Early pregnancy (1) Epistasis (1) Evolve & resequence (1) Experimentale evolution (1) Phenotypic plasticity (1) Plasticité phénotypique (1) Polygenic adaptation (1) Scrotal circumference (1) Épistasie (1) Évolution expérimentale (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Text (1) Ano 2020 (1) 2009 (1) País Brazil (1) France (1) Idioma Francês (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Adaptation génétique et détection de la sélection dans le cadre d'évolutions expérimentales ArchiMer Barthelemy, Clement. Adaptation is a concept at the heart of the theory of evolution by natural selection. It designates both the process which allows the adjustment of the phenotypic trait of an individual to external environmental conditions and the state resulting from this process. In this context, genetic adaptation represents all of the molecular determinants of adaptation, which means, all of the mechanisms that drives adaptation of species at the molecular level. To study the evolutionary processes during adaptation, we can study the evolution of an experimental population in response to the conditions imposed by the experimenter (environmental, demographic, etc.): this is experimental evolution. When these experiments are coupled with high-throughput sequencing, the... Tipo: Text Palavras-chave: Adaptation polygénique; Évolution expérimentale; Épistasie; Plasticité phénotypique; Caractère à seuil; Evolve & resequence; Polygenic adaptation; Experimentale evolution; Epistasis; Phenotypic plasticity; Threshold trait; Evolve & resequence. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00693/80497/83690.pdf Genetic and environmental effects on sexual precocity traits in Nellore cattle R. Bras. Zootec. Meirelles,Sarah Laguna; Espasandin,Ana Carolina; Mattar,Maira; Queiroz,Sandra Aidar de. The objective of this study was to estimate the heritability of probability of early pregnancy (PEP) and scrotal circumference (SC) and the genetic correlation between these traits in Nellore cattle. PEP records from 11,696 Nellore females born between 1983 and 2001 were analyzed. PEP was assumed to be one for females that effectively bred in the herd (19.84%) and zero for those discarded before first calving (80.16%). The model used to study PEP included the effects of contemporary group, age of dam at calving and heifer weaning age, direct additive genetic effects, and residual effects. For SC, 9335 records were analyzed considering the effect of contemporary group, direct additive genetic effects and residual effects. Covariance components were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Beef cattle; Early pregnancy; Scrotal circumference; Threshold trait. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000800012 Registros recuperados: 2 Primeira ... 1 ... Última

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