Genetic parameters and direct, maternal and heterosis effects on litter size in a diallel cross among three commercial varieties of Iberian pig
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Author
Noguera, J.L.
Ibáñez-Escriche, N.
Casellas, J.
Rosas, J.P.
Varona, L.
Publication date
2019-06-04ISSN
1751-7311
Abstract
The Iberian pig is one of the pig breeds that has the highest meat quality. Traditionally, producers have bred one of the available varieties, exclusively, and have not used crosses between them, which has contrasted sharply with other populations of commercial pigs for which crossbreeding has been a standard procedure. The objective of this study was to perform an experiment under full diallel design among three contemporary commercial varieties of Iberian pig and estimate the additive genetic variation and the crossbreeding effects (direct, maternal and heterosis) for prolificacy. The data set comprised 18 193 records for total number born and number born alive from 3800 sows of three varieties of the Iberian breed (Retinto, Torbiscal and Entrepelado) and their reciprocal crosses (Retinto × Torbiscal, Torbiscal × Retinto, Retinto × Entrepelado, Entrepelado × Retinto, Torbiscal × Entrepelado and Entrepelado × Torbiscal), and a pedigree of 4609 individuals. The analysis was based on a multiple population repeatability model, and we developed a model comparison test that indicated the presence of direct line, maternal and heterosis effects. The results indicated the superiorities of the direct line effect of the Retinto and the maternal effect of the Entrepelado populations. All of the potential crosses produced significant heterosis, and additive genetic variation was higher in the Entrepelado than it was in the other two populations. The recommended cross for the highest yield in prolificacy is a Retinto father and an Entrepelado mother to generate a hybrid commercial sow.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
619 - Veterinary science
Pages
8
Publisher
Elsevier
Is part of
Animal
Citation
Noguera, J.L., N. Ibáñez-Escriche, J. Casellas, J.P. Rosas, and L. Varona. 2019. "Genetic Parameters And Direct, Maternal And Heterosis Effects On Litter Size In A Diallel Cross Among Three Commercial Varieties Of Iberian Pig". Animal 13 (12): 2765-2772. doi:10.1017/s1751731119001125.
Program
Genètica i Millora Animal
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2651]
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