EFFECTS OF REPLACING MAIZE (Zea mays) WITH GARRI WASTE BASED DIETS ON THE RELATIVE CARCASS AND ORGANS CHARACTERISTICS OF BROILER FINISHER BIRDS

This study determined the effect of replacing maize with Garri waste based diets on the relative carcass and organs of broiler finisher birds. The research work was conducted in the poultry unit of the Teaching and Research Farm, College of Education, Ila-Orangun, Osun State for six weeks. A total number of 128

marshal broiler birds of five (5) weeks of age were purchased from a reputable farm in Osogbo, Osun State. The birds were randomly distributed into four (4) dietary treatments and replicated four (4) times. Each replicated with eight (8) birds, Experimental treatments were formulated at different replacement levels of 0%, 25% (12.50/100kg of diet), 50% (25.00/100kg of diet) and 75% (37.50/100kg of diet) Garri Waste (GW) respectively for maize into diets (treatments). Samples of test ingredient and Experimental diets were analyzed for their proximate composition according to A. O. A. C (2002) methods. Data were collected on Final life weight (FLW), Bled weight (BW), Defeathered weight (DW), Eviscerated weight (EW), Carcass weight (CW), Dressing (%), Breast (%), Back (%), Thigh (%), Drumstick (%), Neck (%), Wing (%), Shank (%), Head (%), heart (%), lung (%), kidney (%), liver (%), gizzard (%), spleen (%), proventiculous (%) including abdominal fat (%) and subjected to one – way analysis of Variance (ANOVA) using the model for completely randomized design at 5% probability test using SPSS 13.00 computer software of SAS package. Findings showed that birds fed T1 (0% GW) were significantly higher (p < 0.05) in FLW (3438.20g), BW (2839.50g), DW (2706.50g), EW (2428.20g) and CW (2263.20g). There was no significant difference (p > 0.05) for Dressing (%), Breast (%), Back (%) and Head (%) but there were numerical differences across these parameters. Bird fed 75% GW (T4) were significantly higher (p < 0.05) in kidney, lungs, liver, Proventiculus, heart and spleen with values 1.96, 2.01, 8.61, 1.67, 1.27 and 0.56 respectively while birds fed control had lower values (p < 0.05) in kidney, lungs, liver and proventiculus (0.70, 0.71, 2.40, and 0.50 respectively). However, birds fed T3 were significantly lower (p < 0.05) in heart and spleen (0.67 and 0.18) but these birds were significantly higher (p < 0.05) in abdominal fat. There was no significant difference (p > 0.05) in gizzard weight but had numerical higher value in T4 (4.19) and the lower value in T3 (2.16). It was concluded that up to 25% replacement of maize with Garri Waste has optimal carcass characteristics while 75% replacement of maize with Garri Waste had the largest internal organs. Thus, up to 25% Garri Waste based meal diet can be used to replace the conventional maize in the diet of broiler finisher chicken with the optimal Carcass qualities and 75% Garri Waste based meal diet can be used to replace the conventional maize in the diet of broiler finisher chicken with the larger internal organs weights.

Key words: Replacement, maize, garri waste, carcass, organs and broiler finisher bird.