Genotype-environment interaction of maternal influence characteristics in Nellore cattle bred in the Brazilian humid tropical regions by reaction norm
作者: Jorge Luís Ferreira Fernando Brito Lopes Thaymisson Santos de Lira José Américo Soares Garcia Raysildo Barbosa Lôbo Roberto Daniel Sainz
作者单位: 1Universidade Federal do Tocantins
2University of Wisconsin
3Faculdade de Agronomia e Veterinária, Universidade de Brasília
4Associação Nacional de Criadores e Pesquisadores
5University of California
刊名: Semina: Ciências Agrárias, 2015, Vol.36 (4), pp.2787-2798
来源数据库: Directory of Open Access Journals
DOI: 10.5433/1679-0359.2015v36n4p2787
关键词: Animal genetic improvementHeritabilityZebu cattle
原始语种摘要: Reaction Norm (RN) is the study of genotype-environment interaction (GxE) that complies with alternative ways of genotypes within different environments. This study was carried out to verify GxE by a reaction norm model of weights at 120 (W120) and 210 (W210) days of age in Nellore cattle raised in the Humid Tropical Regions of Brazil. Environmental gradients were obtained by solutions of contemporary groups which were fitted as co-variables in the random regression model via reaction norms. Mean weight at 120 days of age was 127.97 kg, and environmental gradients ranged between -27 and +26 kg. Average was 185.60 kg at 210 days of age and gradients ranged from -54 to +55 kg. Scale changes in the breeding values and heritability estimates occurred along the gradients for the two weights;...
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  • weights 法码
  • environment 环境
  • reaction 反酌
  • cattle 
  • genetic 遗传的
  • maternal 母的
  • humid 湿润的
  • breeding 育种
  • greater 较大
  • values 价值观