Effect of partial substitution of crude glycerol as an alternative energy source to diets in productive performance and some blood parameters of broiler

Abstract

Abstract This work was performed to investigate the effect of crude glycerol as an energy source in broiler on performance, blood biochemical constituents, Carcass yield and internal organ weights. A total of 240 Ross 308 broiler chicks (males) were distributed in a completely randomized design, with five treatments (0, 2.5 , 5 , 7.5 , and 10% crude glycerol from 1 to 42 days), with four replicates(12 chick/replicate). All diets were formulated to meet the same requirements. Broiler were fed with water and food ad libitum. The data of Body Weight Gain (BWG), Feed Consumption (FC) were recorded weekly and Feed Conversion Ratio (FCR) was also calculated. Birds fed diets with crude glycerol did not differ significantly in performance from those fed the control diet without crude glycerol. Birds receiving crude glycerol 5% for initially two weeks showed highest body weight gain and the better feed conversion ratio all over the experimental period , supplementation 10% crude glycerol recorded lowest values of body weight gain and feed conversion ratio. Glycerol inclusion at 5% of diet can be used as an effective source of energy in broilers, especially from 0 to 21 d of age. Glycerol supplementation had no adverse effects on the production performance , blood biochemical constituents , internal organ weights or carcass yield of broilers