Analysis of genetic parameters of reproductive traits in conserved breed sows raised in Poland-Reference-Cited by-同舟云学术

Analysis of genetic parameters of reproductive traits in conserved breed sows raised in Poland

Published:2021-03-26 Issue:0 Volume:0 Page:
ISSN:2300-8733
Container-title:Annals of Animal Science
language:en
Short-container-title:

Author:

Eckert Robert¹,Szyndler-Nędza Magdalena¹^ORCID,Szulc Karolina²,Skrzypczak Ewa²,Babicz Marek³,Kropiwiec-Domańska Kinga³,Hammermeister Anna⁴

Affiliation:

1. Department of Pig Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland

2. Department of Animal Breeding and Product Quality Assessment , Poznań University of Life Sciences , Złotniki, Słoneczna 1, 62-002 Suchy Las , Poland

3. Institute of Animal Breeding and Biodiversity Conservation , Faculty of Biology, Animal Sciences and Bioeconomy , University of Life Sciences in Lublin ,, Akademicka 13, 20-950 Lublin , Poland

4. Polish Pig Breeders and Producers Association POLSUS , Ryżowa 90, 02-495 Warszawa , Poland

Abstract

Abstract The aim of the study was to estimate the genetic parameters for reproductive performance in native breeds sows covered by genetic resource conservation programmes in Poland. The study used data on reproductive performance of 1,182 Złotnicka White sows, 1,648 Złotnicka Spotted sows and 1,180 Puławska sows. The following traits were analysed: age at first farrowing, number of piglets born alive, number of piglets at 21 days of age and farrowing interval. Covariance components and genetic parameters were estimated using an REML animal model with different combinations of fixed and random effects. Convergence of the iterative process was achieved by the selection of the AIREML algorithm. The estimated values of the coefficients of heritability for the number of piglets born ranged from h2 = 0.09 in the Puławska breed to h2 = 0.30 in the Złotnicka White breed. For the number of piglets reared, they varied between h2 = 0.09 in the Złotnicka Spotted breed to h2 = 0.27 in the Puławska breed. The heritability values for age at first farrowing and farrowing interval were higher, and ranged from 0.4 to 0.5. The significant positive and negative coefficients of phenotypic correlation, estimated between age at first farrowing and farrowing interval with the number of piglets born alive and reared per litter, suggest that the native pig breeds should be bred in keeping with their breed predispositions.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/aoas-2021-0013

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