Carcass quality, physico-chemical parameters, muscle fibre traits and myosin heavy chain composition of m. longissimus lumborum from Puławska and Polish Large White pigs.
In 54 Puławska pigs and 60 Polish Large White pigs (PLW), slaughtered at 30 and 100 kg body weight, carcass and meat quality of m. longissimus lumborum were studied. Analysis revealed that in both examined body weight groups, hot carcass weight, carcass yield percentage, meat content, and weight of ham and carcass ham percentage were significantly lower and backfat thickness higher for Puławska pigs compared to PLW pigs, while PLW pigs exhibited significantly longer carcasses, greater loin eye area, and, in the case of lighter pigs, smaller proportion of loin in the carcass. Muscles of Puławska pigs, in the lighter group, had higher IMF content and a* value, while in the heavier group they exhibited higher pH(45), pH(24) and a* values, lower L*, drip loss, WHC, and thermal loss compared with PLW pigs. PLW pigs had higher WB and hardness values and more glycolytic muscles characterised by higher TNF.
Department of Reproduction and Animal Anatomy, Agricultural University of Krakow, Al. Mickiewicza 24/28, 30-059 Kraków, Poland. Electronic address: wojtysiakd@wp.pl.
Dorota
D
Wojtysiak
Department of Animal Genetics and Breeding, National Research Institute of Animal Production, Balice, Poland. Electronic address: katarzyna.poltowicz@izoo.krakow.pl.
Katarzyna
K
Połtowicz
D000273:Adipose Tissue; D000818:Animals; D001823:Body Composition / Q000235:genetics; D001835:Body Weight / Q000235:genetics*; D001947:Breeding; D003116:Color; D004032:Diet; D006244:Hardness; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008460:Meat / Q000032:analysis*; D018485:Muscle Fibers, Skeletal; D018482:Muscle, Skeletal / Q000737:chemistry / Q000166:cytology; D018995:Myosin Heavy Chains / Q000032:analysis*; D011044:Poland; D013314:Stress, Mechanical; D013552:Swine
D018995:Myosin Heavy Chains
Carcass quality; Meat quality; Muscle fibres; Myosin heavy chain; Pigs