Reduced-rank estimation of genetic parameters for egg production traits and cluster analyses with predicted breeding values

被引：2

作者：

de Freitas, Luara Afonso ^{[1
,4
]}

Savegnago, Rodrigo Pelicioni ^{[1
,5
]}

Grupioni, Natalia Vinhal ^{[1
]}

Ramos, Salvador Boccaletti ^{[2
]}

Stafuzza, Nedenia Bonvino ^{[1
]}

Pereira de Figueiredo, Elsio Antonio ^{[3
]}

Schmidt, Gilberto Silber ^{[3
]}

Ledur, Monica Correa ^{[3
]}

Munari, Danisio Prado ^{[1
]}

机构：

[1] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Ciencias Exatas, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil

[2] Univ Franca, Programa Posgrad Promocao Saude, Franca, Brazil

[3] Embrapa Suinos & Aves, Concordia, Brazil

[4] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Genet, Ribeirao Preto, Brazil

[5] Ctr Pesquisa Bovinos Corte, Inst Zootecnia, Sertaozinho, Brazil

来源：

ACTA AGRICULTURAE SCANDINAVICA SECTION A-ANIMAL SCIENCE | 2018年 / 68卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Genetic correlation; heritability; k-means; laying hens; Ward clustering; PRINCIPAL COMPONENTS;

D O I：

10.1080/09064702.2019.1580308

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

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 -0.52 +/- 0.23. Potentially animals from cluster 2 are more likely to be in the selected group to help improve the egg production.

引用

页码：81 / 86

页数：6

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