EFFECT OF FEEDING VARYING LEVELS OF BLACK-BINDWEED (Falopia convolvulus) MEAL ON GROWTH PERFORMANCE AND ECONOMIC EFFICIENCY OF GROWING RABBITS

A feeding trial was conducted to evaluate the effect of feeding black-bindweed (Falopia convolvulus) meal at varying levels in diets of growing rabbits. Four experimental diets were compounded to form a total mixed ration comprising the test materials and other feedstuffs. The feed comprised the control, 10BBW (10% black-bindweed), 20BBW (20% black-bindweed) and 30BBW (30% black-bindweed). The experimental feeds were pelleted before feeding to ensure efficient feed intake and utilization. The trial lasted for 8 weeks. A total of 20 growing New Zealand White rabbits weighing about 1 kg were used for the study. Five rabbits were randomly allotted to each of the dietary treatments in a completely randomised design, with each rabbit representing a replicate. The rabbits were weighed using a digital scale at the beginning of the study and subsequently weekly. Feed intake and feed conversion ratio (FCR) were also determined. The cost of feeds was determined using cost-benefit analysis. The data obtained were analysed using the SAS application package. The result revealed significant (P<0.05) effects for most of the parameters measured. The average daily weight gain, average daily feed intake and FCR values were better (P<0.05) in 30BBW (0.02 kg, 0.09 kg, 5.09, respectively) compared to the control. The feed cost/kg gain was lower in 30BBW (₦12,324.89) while the cost saving was higher in the same treatment with ₦3,217.83 compared to the control. It can be concluded from the study that 30% inclusion of BBW in diets of growing rabbits improved feed efficiency and promoted higher cost savings, and it is therefore recommended.