Effects of Graded Levels of Raw and Cooked Turmeric Rhizome on Performance of Broiler Chickens.
Obionwu, Dandy C.
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F eeding trials were conducted to ev aluate the effect of graded levels of raw and cooked turmeric rhizome meal on the performance of broiler birds. Turme ric rhizome was washed with water and divided into two batches of 40kg ea ch. The first batch was crushed, sun dried for 3 days , ground to produce raw turmeric rhizome meal and bagged. The second batch was cooked for an hour , crushed with a roller and sun - dried for 3 da ys. Both the raw and cooked sun dried turmeric rhizome s were then ground using a hammer mill t o produce raw and cooked turm eric rhizome meal respectively. Seven (7) broiler starter diet s we re formulated to contain raw or cooked turmeric rhizome meal at 0% ( common control diet), 0.5%, 1.0% and 1.5% levels, respectively . In the finisher phase , s even (7) finisher diet s we re formulated to contain raw or cooked turmeric rhizome meal at 0% (common control diet), 1.0%, 1.5% and 2.0% levels, respectively. Both diets were offered ad libitum during their respective phases to 189 Cobb broilers divided into 7 d ietary treatment groups, each containing 3 replicates of 9 birds per replicate. At the end of the finisher phase, 5 birds from each dietary treatment group were selected, sacrificed and analysed for dressing percentage, organ weights, haematological profil e and serum biochemical composition. The results showed that diet - related differences in final liveweigth, liveweight gain, feed intake and feed conversion ratio were not significant (P>0.05) both at the starter and finisher phases. Similarly, dietary effe cts were not significant (P>0.05) for nutrient digestibility, dressing percentage, carcass and organ weights, most blood parameters and serum biochemical constituents. Significant differences (P<0.05) were observed in red blood cell counts and packed cell volume, although no consistent trends were established. It was evident that the different processing methods had no effect on broiler performance based on the results obtained in this study and within the circumstances of the experiments. It can be conclud ed that sun - dried raw and cooked turmeric rhizome meal did not significantly affect broiler performance except packed cell volume and red blood cell count. Keyword: Turmeric, broiler, processing method, performance, bloo d parameters and biochemical constitue