Association between polymorphism within rabbit IGF1 gene and slaughter weight in Termond White rabbits

Anna Migdał, Sylwia Ewa Pałka, Michał Kmiecik, Olga Jarnecka, Ewelina Semik-Gurgul and Łukasz Migdał
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Anna Migdał: Department of Genetics, Animal Breeding and Ethology, University of Agriculture in Krakow, Krakow, Poland
Sylwia Ewa Pałka: Department of Genetics, Animal Breeding and Ethology, University of Agriculture in Krakow, Krakow, Poland
Michał Kmiecik: Department of Genetics, Animal Breeding and Ethology, University of Agriculture in Krakow, Krakow, Poland
Olga Jarnecka: Department of Genetics, Animal Breeding and Ethology, University of Agriculture in Krakow, Krakow, Poland
Ewelina Semik-Gurgul: Department of Animal Molecular Biology, National Research Institute of Animal Production, Balice, Poland
Łukasz Migdał: Department of Genetics, Animal Breeding and Ethology, University of Agriculture in Krakow, Krakow, Poland

Czech Journal of Animal Science, 2025, vol. 70, issue 1, 33-41

Abstract: Growth traits belong to the most important economic traits in livestock. One of the genes involved in vertebrate growth and development is insulin-like growth factor 1 (IGF1). Therefore, in our study we hypothesised that within the sequence of rabbit IGF1 gene it is possible to identify a polymorphism that may influence growth, carcass or meat traits in rabbits. We identified 6 polymorphisms (g.89259430T>C; g.89259338C>G; g.89259328T>C; 89210029A>G; 89210349C>G and g.89194199C>T) within introns of the IGF1 gene. One polymorphism, g.89194199C>T, was analysed using polymerase chain reaction high-resolution melting (PCR-HRM). We performed the association analysis on 370 animals (males to females 1 : 1) of different breeds: New Zealand White × Flemish Giant crossbreds (NZW × FG), Termond White (TW) and Flemish Giant (FG). Results showed that for growth and slaughter traits in TW populations a significant association (P = 0.003) was found for slaughter weight (SW) when CT genotypes showed significantly higher values compared to CC genotypes (2 878.0 g ± 107.0 and 2 678.0 g ± 34.0, respectively). For TW rabbits we found a significant association (P = 0.009) for dissected bone weight in hind leg (HB) when CT genotypes (127.0 g ± 5.8) had significantly higher values compared to CC genotypes (112.0 g ± 2.4). For carcass traits and physical characteristics of meat we found for musculus longissimus lumborum in TW rabbits that the b* parameter value 45 min after slaughter was significantly higher (P = 0.001) for CT genotypes (1.88 ± 0.05) compared to CC genotypes (0.05 ± 0.02). We conclude that the use of identified SNP in breeding may be limited to some breeds.

Keywords: association analysis; growth traits; insulin like growth factor 1; meat traits oryctolagus cuniculus; SNP (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:70:y:2025:i:1:id:59-2024-cjas

DOI: 10.17221/59/2024-CJAS

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