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Nigeria Agricultural Journal

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Assessment of abattoir wastes (bovine blood and rumen content) on carcass characteristics, internal organs and organoleptic properties of broiler birds

D.N. Onunkwo, W Amaduruonye, G Daniel-Igwe

Abstract


A study using (120) Abor acre broilers was conducted to assess impact of abattoir waste --BBRCM (bovine blood and rumen content mixture) on the carcass characteristics; internal organs and organoleptic properties of broilers. One hundred and twenty (120) birds were randomly assigned to four treatments replicated three times in a Completely Randomized Design (CRD). Four experimental diets were formulated to meet the nutrient requirement of broilers such that the birds were fed sun-dried abattoir waste (bovine blood and rumen content mixture) included at 0%, 5%, 10% and 15% representing treatment 1, 2, 3 and 4 respectively, with treatment 1 as the control. Each treatment consisted of 30 birds with 10 birds per replicate. The experimental diets and clean water were supplied throughout the experimental period. At the end of the 56 days feeding trial, four (4) birds from replicate were randomly selected for carcass characteristics, organ weight measurements and organoleptic properties assessment. The birds were slaughtered, de-feathered and eviscerated. The breast meat was cooked for 20mins. The cooked meat was cut into smaller pieces and labeled according to their respective treatments and presented to 10 panelist provided with a questionnaire that addressed the organoleptic properties (taste, juiciness, tenderness, flavor, color and acceptability) after preliminary training of the panelists. The proximate composition of the abattoir waste showed that its moisture content, crude protein, ether extract, crude fiber, ash and NFE were found to be 9.34%, 35.35%, 3.60%, 15.67%, 10.98%, and 25.06% respectively. Data collected were subjected to analysis of variance (ANOVA). Results showed significant differences (P<0.05) on live weight, dressed weight, carcass characteristics and internal organs. Live weight reduces from 1666.67g in T1 to 1400.00g in T1 to 1193.00g in T2. The breast weight reduced from 271.67g in T1 to 175.33g in T2. The weight of the gizzard reduced from 66.00g in T1 to 54.67g in T2. The results also showed that there were no significant difference (P>0.05) on the organoleptic properties of broilers fed the experimental diets. Therefore, feeding broilers with abattoir wastes could reduce feed cost in broiler production.

Keywords: Rumen content, Abattoir waste, Organoleptic, Broiler, Organ and Carcass




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