Comparative Utilization of Three Animal Protein Sources by Broiler Chickens
International Journal of Poultry Science
T he effect of including three unconventional animal protein sources in broiler ration was investigated. One hundred and fifty (150) unsexed day-old broiler chicks of Anak Strain were randomly allocated to 5 dietary treatment, each having 3 replications of 10 chicks in a completely randomized design (CRD). Diets 2,3,4 and 5 respectively contained 2.5% of Danish fish meal, locally processed fish meal (fish waste meal), crayfish waste meal, and grasshopper meal, while Diet 1 (control) had no
... ontrol) had no animal protein. Each diet was offered ad-libitum to the birds for a period of 49 days. The results showed that, absence of animal protein in diet 1 significantly (p < 0.05) depressed feed to-gain ratio (3.40). Diets 3, 4 and 5 were similar to Diet 2, which had feed-to-gain ratio of 2.47. The percentages of the gizzards, livers, kidneys and hearts were not significantly (p > 0.05) affected, an indication that satisfactory animal protein can be prepared from these unconventional sources. The percent carcass proximate composition and gross energy were significant (p < 0.05), but followed no definite pattern. The percent nitrogen and energy retained were not significantly (p > 0.05) but others were. Significant (p < 0.05) higher savings (N213.84) was obtained with the use of Danish fish meal, followed by birds fed diets 5 (N206.64), 4 (N196.71) 3 (N175.74) and 1 (N130.24) respectively. Data from this study indicated that locally processed fish meal, crayfish waste meal, and grasshopper meal can serve as a natural substitute for the imported, expensive and unavailable Danish fish meal without negatively effecting performance and economic returns on broiler production.