Ph. Nissen et al., A search for associations between production traits and marker genotypes on pig chromosome 4 in an inbred family, ACT AG SC A, 51(3), 2001, pp. 161-166
In an inbred pig family founded by commercial breeds, nine microsatellite m
arkers from porcine chromosome 4 were screened to find associations with we
ight gain and fat deposition traits. In this family showing a linear decrea
se in weight gain with inbreeding, an association (P < 0.05) was found betw
een average daily slaughter gain and markers S0214 and S0373 located at app
roximately 88 and 98 cM in the linkage map constructed in this study, No as
sociation (P > 0.05) between backfat thickness and marker genotypes could b
e detected. Furthermore, the genotypes of the markers showed a surprisingly
high degree of heterozygosity in all of the inbred generations, even thoug
h the theoretical inbreeding coefficients reaching 0.59.