The effect of raw soybean in the final mixtures for broilers on the conformation measures and share of major carcass parts

Abstract

The experiment of the supstitution of soybean meal with raw soybean in the final diet was carried out on Hubbard F15 chickens at the age of 35-42 days. The effect of different levels and varieties of raw soybeans in diets on carcass conformation and share of major carcass parts was determined in a two factorial experiment 2 x 5 (2 soybean varieties x 5 levels of raw grains in the mixture), ie a total of 10 dietery treatments. At the end of the trial, by a random sample method, 12 chickens (6 males and 6 females) from each group were sacrificed and examined. The results showed that the index of drumstick girth and share of drumstick were under significant (p (lt) 0.05) influence of the soybean varieties. The level of raw soybeans in diets had significant effect (p (lt) 0.05) on the index of drumstick girth and on the absolute value of the breast depth and breast angle. Shares of breast and thighs of broiler chickens of both sexes were not significantly influenced by the studied factors. It was concluded that the share of raw soybean of 10, 15 and 20% in the final mixtures for broilers hinders the utilization of protein in the ration, resulting in poorer quality of chicken carcasses.

Ogled je izveden na pilićima hibrida Hubbard F15 u uzrastu od 35-42. dana. Efekat upotrebe različitog nivoa sirove soje u smešama na konformaciju trupa i udeo vrednijih delova trupa utvrđen je dvofaktorijalnim eksperimentom 2 x 5 (2 sorte soje x 5 nivoa učešća sirovog zrna u smeši) sa 10 tretmana ishrane. Na kraju ogleda metodom slučajnog uzorka iz svake grupe žrtvovano je po 12 pilića (6 muških i 6 ženskih) u cilju utvrđivanja mera konformacije i udela vrednijih delova trupa. Dobijeni rezultati su pokazali da je indeks obima bataka bio pod značajnim (p (lt) 0,05) uticajem sorte soje. Nivo sirove soje u smešama imao je značajnog uticaja (p (lt) 0,05) na indeks obima bataka kao i na apsolutnu vrednost dubine grudi i grudnog ugla. Udeo bataka je bio pod značajnim (p (lt) 0,05) uticajem sorte soje. Udeli grudi i karabataka brojlerskih pilića oba pola nisu bili pod značajnim uticajem ispitivanih faktora. Zaključeno je da učešće sirove soje od 10, 15 i 20% u završnim smešama za ishranu brojlerskih pilića otežava iskorišćavanje proteinskog dela obroka. što rezultira slabijim kvalitetom pilećih trupova.