Profile of digestive organ and carcass yield of broiler chickens reared with free-antibiotics feed-in different elevation area in Banyumas regency, Indonesia

Abstract

The research objective was to determine the digestive tract profile and carcass production of broiler chickens fed on antibiotic-free feed in areas with different elevation area. The study a survey designed according to the General Linear Model with purposive random sampling to choose farmer with 5.000-10.000 chickens Cobb strain, used opened house and free-antibiotic feed. The data was analyzed used univariate one-way analysis of variance. The result showed that the different elevation area have not significantly affected (p>0.05) the crop, proventriculus, duodenum weight and lenght, inter villi space, carcass weight, carcass percentage of broiler chickens fed by antibiotic-free feed. However, it has significantly affected (P<0.05) the weight of the final body, liver, small intestine, and it is positively considerably affected (P<0.01) on gizzard weight and duodenum villi height. Antibiotic-free broiler chickens have kept in an opened house with different elevation area, hold on normally digestive organs and carcass production.