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Asian Journal of Animal Sciences
Year: 2012  |  Volume: 6  |  Issue: 1  |  Page No.: 23 - 32

Growth Performance, Carcass, Haematology and Serum Metabolites of Broilers as Affected by Contents of Anti-nutritional Factors in Soaked Wild Cocoyam (Colocasia esculenta (L.) Schott) Corm-based Diets

R. Olajide    

Abstract: The performance of hydro broiler chickens fed graded levels of soaked wild cocoyam (Colocasia esculenta L. Schott) corms (SWCC) as a partial substitute for maize were investigated in a 28 day study. One hundred and twenty (120) 4 week old hydro broiler chickens of similar average weight were randomly assigned to 4 dietary treatments. Each treatment had 3 replicates of 10 birds each. Four experimental diets were formulated such that SWCC replaced maize at 0.00, 10.00, 20.00 and 30.00% in the diets. The birds were fed ad libitum and clean drinking water was provided throughout the period of the study. Parameters investigated include the growth performance, carcass characteristics, haematological and serum biochemical indices. Result of the growth performance showed no significant (p>0.05) difference in average weekly feed intake. Average weekly weight gain and cost per kilogram feed decreased (p<0.05); FCR increased (p<0.05) with increased inclusion of SWCC in the diets. Cost of feed per kilogram weight gain (CFPKWG) of birds fed on all SWCC-based diets were significantly (p<0.05) lower than control. Result of carcass analysis indicated that live weight, plucked weight, Eviscerated Weight (EW), Dressed Weight (DW), GIT and organs (kidney, liver and gizzard) were significantly (p<0.05) affected by dietary treatments. The highest (p<0.05) EW (72.91%) and DW (64.78%) of the control were similar (p>0.05) to EW (71.51%) and DW (63.33%) of 10% SWCC; but higher (p<0.05) than those of 20 and 30% SWCC. Organ weights reflected their roles in handling residual anti-nutritional factors in SWCC. Variations obtained in all the serum biochemical indices and haematological parameters investigated were not significant (p<0.05). This may suggest adequacy of the nutrients and absence of deleterious health implications for the birds. It was concluded that SWCC can economically replace 30% of maize in the diets of broiler finishers with no deleterious effects on carcass quality and health of the birds.

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