engleski

Fatty acid composition in breasts of Zagorje turkeys from free range rearing

Zagorje turkey became known in Croatia during the past four and a half centuries. The content of total fat and composition of fatty acids in breast muscle (m.pectoralis superficialis) were measured in Zagorje turkeys from free range rearing and free choice feeding. 144 young turkeys were divided into two groups (C and E), each comprising of 72 birds (36 males+ 36 females). For the first four weeks turkeys were fed a starter diet (25% protein), then grower diet (23% protein) for the next four weeks. From week 9 to 24 of age turkeys were free choice fed whole corn grain (C) or grounded corn (E) plus soybean meal with vitamin-mineral mix. At the same time birds grazed on pasture. Total lipids and fatty acids composition of breast meat of 10 samples (5 male+5 female) were analyzed. Absolute values of majority of fatty acids in the experimental birds are similar to those in commercial hybrid turkeys. Level of decosahexaenoic (C22:6n3) acid was for approximately 100% higher in breast muscles of female Zagorje turkeys, when compared to commercial hybrids. Effect of sex and treatment on level of n-3 polyunsaturated fatty acids was established in breast of Zagorje turkeys.

fatty acids; composition; Zagorje turkey breasts; free range rearing

nije evidentirano