Wpływ mieszanek zawierających jęczmień oplewiony lub nagoziarnisty na wyniki poubojowe i jakość mięsa kurcząt brojlerów

Abstract

The studies aimed to determine the effect of feed rations containing hulled or hull- less barley meal on the slaughter parameters and the quality of muscles in broiler chickens. The experiment involved 120 broiler chickens of Ross 308 split into 3 groups (K, DI, DII), each consisting of 40 birds. Until the 21st day of life the birds were fed ad libitum with ground starter rations, and from day 22 to day 42 they received grower rations based on wheat, soybean meal, and soya oil with an admixture of minerals and vitamins. In the control rations the second cereal was corn, and the experimental rations contained 30% hulled barley (DI) or hull-less barley (DII). The best slaughter parameters were recorded for chickens from group DI. They had the largest share of total muscles including thigh and drumsticks as well as the smallest share of abdominal fat and skin with subcutaneous fat compared to others. The intramuscular fat of experimental birds contained significantly less PUFA than that of the control birds. In terms of taste, the best note the muscles of chickens fed mixtures containing husked barley were rated. The mean of the traits of breast muscle of chickens in this group was higher (P≤0.05) compared to others. The slaughter parameters obtained in the study provide grounds for recommending the use of hulled barley in rations for broiler chickens accounting for 30% of the ration weight.