EFFECT OF FAT INCLUSION IN DIETS FOR RABBITS ON THE EFFICIENCY OF DIGESTIBLE ENERGY AND PROTEIN UTILIZATION
World Rabbit Science
Forty one male growing New Zealand White rabbits aged five weeks old weighed 566.5 ±24.1 g were classified according to body weight into four groups. Before starting the feeding experiment five randomly chosen rabbits were slaughtered to determine the initial body composition. The rest nine rabbits in each group were individually housed in separated cages for a feeding period lasted 56 days. Dry moringa leaves (ML) were mixed with rabbits ration at 0, 0.15, 0.30 and 0.45% and pelleted at 0.3 cm
... pelleted at 0.3 cm diameter die and fed ad libitum for G , 1 G , G and G , respectively. Body weight and actual feed intake were weekly recorded. At the end of the 2 3 4 experiment four digestibility trials were carried out on experimental rations and three representative rabbits from each group were slaughtered to determine the final body composition. Energy and protein utilization efficiency were calculated as net energy and protein gain relative to dietary digestible energy and protein after deducting the maintenance energy and protein requirements. The results indicate that the highest utilization efficiency of energy (18.49%) and protein (43.92%) were recorded with lowest supplementation level of moringa (0.15%) followed by 15.91% for energy and 34.24% for protein with 0.30% ML ration. Energy utilization for control and 0.45% ML groups showed lower comparable values (12.05% and 12.40%), respectively. Protein utilization showed the lowest value (27.91%) with the highest supplementation level of ML (0.45%). It is advisable to supplement ML in the growing rabbits ration at 0.15% to get the best energy and protein utilization efficiency for gain.