Data/hora: 05/06/2024 14:07:58

Biblioteca(s): | Embrapa Suínos e Aves.
Data corrente: | 01/11/2019
Data da última atualização: | 01/11/2019
Autoria: | FREITAS, L. A. de; SAVEGNAGO, R. P.; GRUPIONI, N. V.; RAMOS, S. B.; STAFUZZA, N. B.; FIGUEIREDO, E. A. P. de; SCHMIDT, G. S.; LEDUR, M. C.; MUNARI, D. P.
Afiliação: | LUARA AFONSO DE FREITAS, UNESP/Jaboticabal; RODRIGO PELICIONI SAVEGNAGO, UNESP/Jaboticabal; NATALIA VINHAL GRUPIONI, UNESP/Jaboticabal; SALVADOR BOCCALETTI RAMOS, UNIFRAN; NEDENIA BONVINO STAFUZZA, UNESP/Jaboticabal; ELSIO ANTONIO PEREIRA DE FIGUEIREDO, CNPSA; GILBERTO SILBER SCHMIDT, CNPSA; MONICA CORREA LEDUR, CNPSA; DANÍSIO PRADO MUNARI, UNESP/Jaboticabal.
Título: | Reduced-rank estimation of genetic parameters for egg production traits and cluster analyses with predicted breeding values.
Ano de publicação: | 2019
Fonte/Imprenta: | Acta Agriculturae Scandinavica, Section A ? Animal Science, v. 68, n. 2, p. 81-86, 2019
DOI: | 10.1080/09064702.2019.1580308
Idioma: | Inglês
Conteúdo: | Abstract: The aims of this study were to compare the suitability of the multi-trait (MUT) model to estimate genetic parameters with that of 13 reduced-rank principal component models (PC1 to PC13), and then to explore the additive genetic patterns of the breeding values obtained from these using clustering analyses of egg production traits. A total of 1,212 records were used to estimate genetic parameters using the MUT and PC models. The PC4 model was the best representation of the data since it had a lower AIC value and was more parsimonious than the MUT model. The estimated heritability of the age at the first egg (AFE) trait from this model was 0.28 ± 0.06, and the estimated genetic correlation between AFE and total egg production (TP) was &#8722;0.52 ± 0.23. Potentially animals from cluster 2 are more likely to be in the selected group to help improve the egg production.
Palavras-Chave: | Herdabilidade; Produção de ovos.
Thesagro: | Genética Animal.
Thesaurus Nal: | Breeding; Egg production; Heritability.
Categoria do assunto: | --
Registro original: | Embrapa Suínos e Aves (CNPSA)
Exemplares: | CNPSA - (21675-1) - UPC - AP - DD -  -  -  - DIS