Growth Performance, Carcass Attributes and Economics of Production of Rabbits Fed Kola Nut Testa Based Diets

Abstract

The objective of this study was to assess the growth performance, carcass attributes and economics of production of rabbits fed diets with varying inclusions levels of kola nut testa (KOT) as a replacement for maize. Thirty mixed breed rabbits of mixed sexes were used for this experiment. The rabbits were randomly allotted into 5 treatment groups. Five experimental diets were formulated such that KOT replaced maize at0, 10, 20, 30 and 40%.Records of feed intake and weight gain were properly taken. The experiment lasted for 8 weeks. Data were analyzed using Analysis of Variance while means were separated using Duncan’s Multiple Range Test of SPSS. No significant difference (P>0.05) was recorded in all the parameters measured to determine growth performance. The result of carcass characteristics revealed that no significant difference (p>0.05) was recorded in the weights of the parameters measured except for the limbs. Cost of feed decreased with increase in KOT inclusion (N139.8-N112.54). Cost of feed (N/kg) weight gain (N1023.61-N583.04); the cost of weight gain (N573.22-N483.92); and total cost (N2143.61-N1523.92) all followed a similar pattern. Cost differential (205.93–440.04) and relative cost-benefit (20.11– 43.04%) increased with increase in the level of replacement of KOT. Conclusively, growth performance was not negatively affected and total weight gain was numerically highest at 40%(916.67g). Also, the highest relative cost-benefit was recorded at 40% (28.54%). These prove that KOT is a viable substitute for maize in rabbit diet and it is more economical at 40% replacement level.