COMPARISON OF CHARACTERISTIC COMPONENTS FROM CHICKENS OF DIFFERENT GENOTYPE KEPT IN INTENSIVE AND EXTENSIVE FARMING SYSTEMS

Male and female Broiler chickens and male of Transylvanian naked-neck chickens kept in extensive and intensive farming systems were investig ated. The leg and chest muscle of these chickens were used for the ana lysis. Muscle weight and muscle to bone ratio were significantly highe r but protein content had a lower tendence in the muscle of Broiler ch ickens kept intensively as compared to the extensive way. There was no difference in the level of cholesterol between the animals from the t wo farming systems although the fat contents were much higher in the c hickens kept intensively. The level of conjugated dienes and thiobarbi turic acid reactive substances (TEARS) were found significantly less i n the muscles of Broiler chickens kept extensively than those raised i ntensively which may be related to the lower fat content. Extensive fa rming system proved to be superior for Broiler (mainly in legs) and Tr ansylvanian naked-neck chickens in the aspect of lowered lipid peroxid ation and significant higher iron, zinc and thiamin levels. The higher protein and zinc levels showed a relationship with the better water b inding capacity (WBC) in the legs of Broiler chickens kept extensively . Myristic and palmitic acid concentration in the fatty acid compositi on were higher in intensive Broilers as compared to the chickens kept extensively.