G. Biedermann et al., THE STAGE OF REPRODUCTIVE, FATTENING AND CARCASS PERFORMANCE TRAITS OF PIETRAIN PIGS OF DIFFERENT MHS-GENOTYPE PRODUCED IN 2 BREEDING HERDS, Archiv fur Tierzucht, 40(6), 1997, pp. 535-547
For the purpose of the comparison of the reproductive, fattening and c
arcass performance traits of different MHS-genotypes of the Pietrain r
ace there were available 343 sows and 470 animals of progeny testing b
oth produced in two breeding farms. The most important results can be
summarized as follows: Stress-resistant sows are inferior to stress-su
sceptible sows with regard to reproductive performance; but the differ
ences are not significant. Stress-resistant pigs, especially of pure s
tress-resistant genotype, verified a lower fattening performance than
stress-susceptible pigs; but the differences are not significant, too.
Pure stress-resistant pigs produce significantly higher fat and lower
lean meat portions than stress-susceptible pigs; mixed stress-resista
nt animals occupy the middle of both. The meat quality of pure-resista
nt pigs, followed by mixed stress-resistant animals, is much better th
an that of stress-susceptible pigs. According to the results which hav
e been discussed a general selection for pure stress-resistance of the
Pietrain race is recommended.