Effect of replacing soybean meal with hipro cottonseed meal at graded concentrations on performance and slaughter variables in broiler chicken

The objective of this study was to investigate the effects of including hipro cottonseed meal (hpCSM) in diets on growth performance and slaughter variables in broiler chicken. A total of 1050 one-day-old Cobb-400 male broiler chicks were randomly allocated to five treatments with ten replicates of 21 birds per replicate. The five experimental diets were formulated to contain no hpCSM (corn-soy based diet; SBM), or hpCSM included at 5 (hpCSM₅,), 10 (hpCSM₁₀), 15 (hpCSM₁₅), and 20 (hpCSMJ₂₀ per cent levels in isocaloric and isonitrogenous diets. No differences in performance of broilers due to feeding hpCSM up to 20% were observed during 1–21 d of age. At 42 d, the performance (BW gain and feed efficiency) was not affected with hpCSM supplementation up to 15%, while a significant reduction was observed at 20% hpCSM. The inclusion of hpCSM at 5% significantly improved the BW gain (P<0.05) among the CSM fed groups and improved feed efficiency among all the groups. Inclusion of hpCSM up to 20% did not affect (P > 0.05) the ready to cook yield, relative weights of breast meat and liver; however, there was increased abdominal fat deposition (P < 0.05) in hpCSM fed groups. The highest abdominal fat pad weight was observed in broilers fed the 20% hpCSM diet. Based on the results, it is concluded that hpCSM can be included up to 15% in the broiler diet without affecting the performance, while the hpCSM at 20% depressed the performance. Abdominal fat deposition increased significantly in broilers fed diets having hpCSM at all inclusion levels.