Alternative count Bayesian models for genetic evaluation of litter traits in pigs

Teixeira Silva, Hugo; Botelho Diniz Marques, Daniele; Sávio Lopes, Paulo; De Paiva, José Teodoro; Veroneze, Renata; Gomes Camargo, Ederson; Pereira de Figueiredo, Elisio Antonio; Fonseca e Silva, Fabyano

doi:10.1016/j.livsci.2019.05.006

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Article (Scientific journals)

Alternative count Bayesian models for genetic evaluation of litter traits in pigs

Teixeira Silva, Hugo; Botelho Diniz Marques, Daniele; Sávio Lopes, Paulo et al.

2019 • In Livestock Science, 225, p. 140-143

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/237793

DOI
10.1016/j.livsci.2019.05.006

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Keywords :

Hurdle Poisson model; Bayesian inference; Reproductive traits

Abstract :

[en] We compared Hurdle Poisson (Hupoisson), Zero Inflated Poisson (Zipoisson), Poisson and Gaussian Bayesian mixed models for genetic evaluation of litter traits in pigs (number of piglets born alive – NBA; number of piglets weaned – NW; and mortality during the suckling period – MORT). The models’ goodness-of-fit was based on Deviance Information Criteria (DIC), Model Posterior Probabilities (MPP) and Mean Square Error (MSE). The Hupoisson model provided the best fit to MORT, even showing higher heritability estimate (0.13, with credibility interval from 0.0745 to 0.2809). The Hupoisson model proposed in the present study was suitable for genetic evaluation of mortality during the suckling period, and can be indicated as a novel approach to treat count data with excess of zeros under a genetic and breeding viewpoint. The Gaussian model outperformed the other models for NBA and NW.

Disciplines :

Animal production & animal husbandry

Author, co-author :

Teixeira Silva, Hugo

Botelho Diniz Marques, Daniele

Sávio Lopes, Paulo

De Paiva, José Teodoro ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition

Veroneze, Renata

Gomes Camargo, Ederson

Pereira de Figueiredo, Elisio Antonio

Fonseca e Silva, Fabyano

Language :

English

Title :

Alternative count Bayesian models for genetic evaluation of litter traits in pigs

Publication date :

July 2019

Journal title :

Livestock Science

ISSN :

1871-1413

eISSN :

1878-0490

Publisher :

Elsevier, Amsterdam, Netherlands

Volume :

225

Pages :

140-143

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 01 July 2019

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