|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
21/07/2022 |
|
Data da última atualização: |
21/07/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
DALTRO, D. dos S.; AMBROSINI, D. P.; NEGRI, R.; SILVA, M. V. G. B.; COBUCI, J. A. |
|
Afiliação: |
DARLENE DOS SANTOS DALTRO, Universidade Federal do Rio Grande do Sul; DIEGO PAGUNG AMBROSINI, Instituto Federal do Amapá; RENATA NEGRI, Universidade Federal do Rio Grande do Sul; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; JAIME ARAUJO COBUCI, Universidade Federal do Rio Grande do Sul. |
|
Título: |
Reaction norm model to describe environmental sensitivity in Girolando cattle. |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
Livestock Science, v. 263, 105025, 2022. |
|
DOI: |
https://doi.org/10.1016/j.livsci.2022.105025 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The aim was to identify the effect of the genotype-environment interaction (GEI) for test-day milk yield (TMDY) in Girolando cows. Data were a total of 614,580 observations from 87,395 first-lactation cows between 2000 and 2014. The animal model (MA) and reaction standard hierarchical models were adjusted with homogeneous and heterogeneous variances in one step (MMRA1p-T-Ho and MMRA1p-T-He, respectively) and two steps (MMNR2pT-Ho and MMNR2p-T-He, respectively), both with Student?s t-distribution. These different models were compared using three goodness-of-fit criteria: deviance information criterion (DIC), deviance based on the Conditional Predictive Ordinate (CPO), and deviance based on the Bayes factors (BF). The MMRA1p-T-Ho, MMNR2p-T-Ho, and MMNR2p-T-He models presented the lowest values for the DIC (75,662.12), CPO (76,276.89), and BF (71,950.11), respectively, indicating good quality-of-fit. Estimates of mean posterior heritability were low to high (0.06 to 0.84) for TMDY. The genetic correlations along the environmental gradient for TDMY showed low to high values (-0.40 to 1.00). The results indicated a presence of GEI Girolando animals, suggesting the possibility of its inclusion in genetic evaluations performed in Brazil. |
|
Palavras-Chave: |
Environmental gradient; Genetic selection; Gradiente ambiental; Herdabilidade. |
|
Thesagro: |
Gado Leiteiro; Seleção Genética. |
|
Thesaurus Nal: |
Dairy cattle; Heritability. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
null
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
