Reference : Modelos hierárquicos bayesianos na estimativa de interação genótipo x ambiente para r...
Scientific congresses and symposiums : Paper published in a book
Life sciences : Animal production & animal husbandry
http://hdl.handle.net/2268/216330
Modelos hierárquicos bayesianos na estimativa de interação genótipo x ambiente para resistência ao carrapato em bovinos de corte Hereford e Braford via normas de reação
Portuguese
[en] Hierarchical Bayesian models for genotype x environment estimates in tick resistance of Hereford and Braford beef cattle via reaction norms
REIS MOTA, Rodrigo mailto [Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition >]
Flores Cardoso, Fernando []
Sávio Lopes, Paulo []
Borges Machado Teixeira, Bruno []
18-Aug-2013
Anais: X Simpósio Brasileiro de Melhoramento Animal
Sociedade Brasileira de Melhoramento Animal
Yes
X Simpósio Brasileiro de Melhoramento Animal
18-23 August 2013
SBMA - Sociedade Brasileira de Melhoramento Animal
Uberaba - MG
Brazil
[en] bayesian inference ; breeding value ; environmental level
[en] The existence of genetic x environment interaction (GxE) was evaluated based on models with different genetic and residual variance presumptions for tick resistance in Hereford and Braford beef cattle. Seven models were studied: a standard animal model (AM) and six as hierarchical reaction norm models (HRNM). The deviance information criterion (DIC) revealed that the 1-step HRNM with heterogeneous residual variance based on eight subclasses of contemporary group infestation level yielded the best fit to the data. The AM heritability was lower when compared to HRNM in environmental with medium and high tick infestation levels and superior in low infestation level. The GxE was observed by crosses among animals linear reaction norms along the environmental gradient. The HRNM are useful tools to identify GxE in tick resistance of Hereford and Braford beef cattle.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/216330

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