title: The effect of interaction between genotype CAST/RsaI (calpastatin) and MYOG/MspI (myogenin) on carcass and meat quality in pigs free of RYR1(T) allele.
abstract: The purpose of the studies was to demonstrate to what degree genotypes of calpastatin (CAST/RsaI) and myogenin (MYOG) genes as well as the interaction between them may affect the carcass and meat quality of pigs. The investigations were conducted on 397 stress resistant pigs (free of RYR1(T) allele). It was demonstrated that the favourable effect of the variants of CAST and MYOG genes on carcass quality traits depends on the cut. The gene variant favourably affecting the weight of ham simultaneously had a negative effect on the weight of the loin. It was also shown that the interaction between CAST and MYOG genotypes has a significant effect on backfat thickness. The effect of a given combination of CAST and MYOG genotypes on carcass traits is related to the weight of a substantial cut (ham, loin). Genotypes at loci CAST/RsaI and MYOG have a significant effect on the value of certain traits and parameters of meat quality and its technological value (genotype CAST on pH at 35min and 2, 3, 24, 48, 96, 144h post-mortem (pH(35), pH(2), pH(3), pH(24), pH(48), pH(96), pH(144), respectively), R(1) (IMP/ATP), electrical conductivity at 3 and 4h post-mortem (EC(3), EC(4)), technological yield of meat in curing and thermal processing (TY) and protein content in the muscle tissue, while genotype MYOG on pH(48), EC(35), EC(3), EC(24) and dry matter content).
authors: University of Podlasie, Chair of Pig Breeding and Meat Science, 14 Prusa Street, 08-110 Siedlce, Poland.
authors: E
authors: E
authors: Krzęcio
authors: M
authors: M
authors: Koćwin-Podsiadła
authors: J
authors: J
authors: Kurył
authors: A
authors: A
authors: Zybert
authors: H
authors: H
authors: Sieczkowska
authors: K
authors: K
authors: Antosik