THE USE OF COTTONSEED MEAL AS A PROTEIN REPLACER IN POULTRY BROILER BIRD
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Date
2018-07-07
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CSKHPKV, Palampur
Abstract
The study was conducted to evaluate the effect of the locally available non-dehulled cottonseed cake in the poultry broiler birds under completely randomized block design. For this purpose, day old broiler chicks (n=108) were divided into 4 main treatment groups T0, T1, T2 and T3. Each treatment group was further divided in 3 replicates with 9 chicks in each. T0 served as standard control diet and was given standard corn- soy flake- groundnut based ration. Treatment T1 was given ration containing 20 per cent non-dehulled cottonseed cake and T2 was given ration containing 20 per cent fermented non-dehulled cottonseed cake whereas treatment T3 was given ration containing 20 per cent non-dehulled cottonseed cake with additional supplementation of ferrous sulphate (600ppm) and lysine (2%). All the four broiler diets were formulated and prepared conferring to ICAR (2013) standards. Substitution of non-dehulled cottonseed cake as protein replacer at 20 per cent level depressed gain in live weight, poor feed conversion ratio (FCR) and affected the liver functioning in both treatments T1 and T2 compared to control T0 whereas treatment T3 supplemented with iron (Fe) and lysine compensate the toxic effect of gossypol and improved performance and feed conversion ratio (FCR) compared to treatment T1 and T2 but not comparable to control T0. Supplementation of non-dehulled cottonseed cake did not show any significant variation in complete blood count except for TLC which was significantly (P<0.05) higher in treatment T1. Plasma phosphorous, triglycerides, HDL, SGOT, SGPT, total protein and albumin content were non-significant amongst control and other treatment groups. Control T0 exhibited significantly (P<0.05) higher carcass weight, dressed weight, dressing percentage, breast muscle yield and cooking yield. Overall acceptability of chicken meat was higher in treatment T1 and T2. Cost benefit ratio indicated higher cost/kg gain in live weight in non-dehulled cottonseed cake and fermented non-dehulled cotton seed cake formulated ration. Thus, replacement of 20 per cent non-dehulled cottonseed cake available in the market as a protein replacer in feed of broiler birds was found to be uneconomical.
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