Analysis of relationships between polymorphism in the ryanodin receptor gene (RYR1) and certain reproductive traits in pigs
2005
Kmiec, M. | Terman, A. | Kulig, H. | Polasik, D.,Akademia Rolnicza, Szczecin (Poland). Katedra Genetyki i Ogolnej Hodowli Zwierzat
The investigations were conducted on F1 generation derived from large white (wbp) sows and Polish Landrace (pbz) boars crossbreed, consisting of 431 pigs. Polymorphism in ryanodin receptor gene was determined by the PCR-RFLP method using Hin6I restriction enzyme. Mutation 1843C-T in ryanodin receptor gene, responsible for susceptibility to stress in pigs occurred at frequency of 6.38 percent. In investigated herd didn't occur genotype RYR1nRYR1n as regards this mutation, however frequency of RYR1NRYR1n genotype amounted 12.76 percent. Frequency of mutation-free genotype RYR1NRYR1N amounted 87.24 percent. Influence of genotypes RYR1 on number born alive, number still born, number of weaned piglets and age of sows by farrowing in 10 following litters was analysed. Statistical analysis concerning traits of reproductive performance was carry out after transformed the data from the discrete to normal distribution, keeping count in model the influence of RYR1 genotype, year and season of the farrowing. This statistical analysis didn't show influence of genotypes RYR1 on investigated traits. Only associations in relation to some years and seasons of farrowing was found
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