17. Investigation on the quantity and nutritional composition of slaughterhouse byproducts of indigenous sheep

Abstract

The present study was done to find out the change of yield and nutritional composition of most edible slaughterhouse by-products of sheep with the change of age in Bangladesh. T₀= 0 tooth (under 1 year), T₁= 2 teeth (1 to 1.5 year), T₂=4 teeth (2 years), T₃= 6 teeth (2 to 2.5 years), T₄= 8 teeth (more than 2.5 years) of sheep were the treatment groups. Live weight, warm carcass weight, dressing percentage, weight of by-products, proximate component of edible by-products for different age group of sheep were measured to conduct the experiment. Carcass weight, dressing percentage, by-products weight increased significantly with the increase of age except head. Among the nutritional differences, crude protein (CP%) were found higher in liver and kidney than lung and brain. Ether extract (EE%) were higher in liver and heart than kidney, lung, brain. Ash percentage were found highest at liver. pH level differed significantly in different age group. The weight of edible by-products (liver, lung, kidney, heart) increased with the increase of age except brain. These results will be helpful to
realize the importance and change of yield and nutritive value of edible by-products for different age group of sheep in Bangladesh.