COMPARISON OF SOME COMPONENTS FROM PIGS OF DIFFERENT BODY-MASS KEPT IN NATURAL CONDITIONS

A new genotype of Hungarian Large White (75%) x Mangalica (pig with cu rly bristles, 25%) pig was used in the experiment. The animals were ke pt in a farming system under strictly natural circumstances, neither a ntibiotics nor yield-increasing hormones were given to them. The exper imental group was slaughtered after 12-13 moths at 180 kg of body mass while the control group had the traditional lifetime of 8 months at 1 20 kg of body mass. As a result of the fattening crude protein content decreased and fat level considerably elevated in the various cuts of the group of older pigs. In the aspect of cholesterol there was no dif ference between the groups. Linoleic acid showed a significantly lower level in the more fatty tissues of older pigs. Thiamin and riboflavin contents markedly elevated nearly all cuts (ham, loin, neck-end, shou lder-blade) of the group of 180 kg, probably owing to the vitamin-rich diet performed. Iron, zinc, copper, potassium, sodium and calcium lev els remained unchanged. In the older pig group higher level of thiobar bituric acid reactive substances (TEARS) was observed probably due to the favourable possibilities for lipid peroxidation.