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Cottonseed cake in breeder hens diets effects of supplementation with lysine and methionine



Cottonseed cake in breeder hens diets effects of supplementation with lysine and methionine



Archiv fuer Gefluegelkunde 53(6): 231-234



Two successive experiments were conducted to evaluate the feeding value of cottonseed cake (CSC) expeller in Vedette breeder hens' diets. One was done with synthetic lysine and methionine supplementation and the other without. Cotton seed cake was fed to the hens at inclusion of 0, 7.5, 15, 22.5 and 30% mainly through weight to weight substitution of groundnut cake. Results showed that only egg weight, fertility and eclosability were affected by CSC inclusion in the diet. Food intake, egg production and feed conversion remained unchanged whatever the dietary treatment was. In both experiments the levels of inclusion of 7.5% of CSC in the diet led to performances similar to that of the control group for any variable. Without synthetic amino acid supplementation (experiment 1) the egg weight fertility hatchability and viability of the offspring were severely and proportionally reduced for diet concentrations of 15 to 30% CSC. In experiment 2 with synthetic lysine and methionine supplementation (0.15%) and 15% CSC diet showed no significant effect on breeder hens performances. Although a reduced hatchability was observed for levels of inclusion higher than 15% in the diet. A discussion is presented about the alternative or combined effects of gossipol and essential amino acids on breeder perfomances fed high CSC diets.

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