Effect of feeding patterns of diet with glycerin inclusion on broiler carcass quality

Abstract

The effects of feeding patterns of diet with crude glycerin inclusion on carcass characteristics were observed in broiler chickens. Three hundred and sixty one day old female Cobb500 chicks with 44.34 g of average initial weight were allotted to receive three feeding patterns of diets according to a completely randomized experimental design (CRD). The feeding pattern of diets were: T1 – feeding a control diet with no crude glycerin inclusion for 42 days, T2 - feeding a control diet with 5% crude glycerin for 42 days, and T3 – feeding a control diet with no glycerin inclusion from day 1 to day 21, and then feeding diet with 5% of glycerin inclusion from day 22 to 42. Treatment diets and water were offered ad libitum to birds. All birds were fed with diets containing 23% CP and 3,200 kcal ME/kg of broiler diets to meet nutrient requirement of poultry according to NRC (1981) during day 1 to day 21, and the level of CP was decreased to 20% during day 22 to day 42 of the experiment. At the end of day 21 and 42, 20 chickens per treatment were randomly sampled and slaughtered to determine carcass yield and breast meat (m. Pectoralis major) quality. From the results, feeding diet with glycerin inclusion from both T2 and T3 did not giveany effect on the carcass characteristics (P> 0.05) when compared to the carcass from T1. Nevertheless, it was indicated that those received diet with glycerin inclusion from T2 and T3 had higher fat percentage than that of broilers fed control diet.