Cechová M, Wolf J, Trcka P
Department of Animal Breeding, Mendel University of Agriculture and Forestry in Brno, Faculty of Agronomy, Brno, Czech Republic.
J Anim Breed Genet. 2007 Apr;124(2):86-93. doi: 10.1111/j.1439-0388.2007.00640.x.
Piétrain boars of different ryanodine receptor (RYR1) genotypes (NN, Nn and nn, three boars each) were mated with approximately 10 Czech Large White x Czech Landrace sows (genotype NN) each to produce one litter per sow. The progeny of nn boars had a significantly higher individual weaning weight (7.31 kg versus 6.86 kg) and average daily gain from birth to weaning (252 g/day versus 240 g/day) than the progeny of NN boars. Furthermore, piglets from nn boars differed statistically significant also from piglets of boars with the Nn genotype for these two traits. The litters of the NN boars were greater by 0.5 piglets than the litters of the nn boars for the total number of piglets born, piglets born alive and piglets weaned, but the differences were not significant. The Nn genotype showed for all litter size traits and the number of stillborn piglets the best values. The difference between the genotypes Nn and nn was statistically significant at the 0.05 level for the number of piglets born alive and the number of piglets weaned.
不同兰尼碱受体（RYR1）基因型（NN、Nn和nn，每种基因型各三头公猪）的皮特兰公猪分别与大约10头捷克大白猪×捷克长白猪母猪（基因型NN）交配，每头母猪产一窝仔猪。nn基因型公猪的后代个体断奶体重（7.31千克对6.86千克）和出生至断奶的平均日增重（252克/天对240克/天）显著高于NN基因型公猪的后代。此外，就这两个性状而言，nn基因型公猪的仔猪与Nn基因型公猪的仔猪在统计学上也有显著差异。在出生仔猪总数、存活仔猪数和断奶仔猪数方面，NN基因型公猪的窝仔数比nn基因型公猪的窝仔数多0.5头，但差异不显著。Nn基因型在所有窝仔数性状和死产仔猪数方面表现出最佳值。Nn和nn基因型在存活仔猪数和断奶仔猪数方面的差异在0.05水平上具有统计学意义。
