Fattening and carcass performance and meat- and fat quality of Pietrain pigs of different MHS-genotype and sex. II. Fatty acid pattern of the adiposetissues back fat, leaf fat and intermuscular fat and of the total- and phospholipids of the M-long. dorsi

In this investigation the fatty acid pattern of the adipose tissues back fa t (devided in dorsal and ventral compartment), leaf fat and intermuscular a nd the total and phospholipids of the M. long. dorsi of different MHS-genot ypes and sexes of the Pietrain race have been compared. There were availabl e 60 animals with equal numbers of the three MHS-genotypes (NN, Np, pp) and both sexes (castrates, gilts) (liveweight at the end of fatteniing: 150 kg ). The decreasing presence of the stress allele p (pp>NP>NN) as well the castr ates compared with the gilts were combined with increasing content of satur ated and monounsaturated fatty acids and decreasing content of polyunsatura ted fatty acids in all adipose tissues and in the total and phospholipids o f the M. long, dorsi and thus with better technological quality. The results should additionally cause the selection stress resistent pigs o f the Pietrain race.