Productive Performance and Cost Effectiveness of Broiler Chickens Fed Yellow Maize Diet Supplemented with Graded Levels of Synthetic Methionine
Eight weeks (56 days) feeding trial was carried out using a total of three hundred (300) day old broiler chicks to determine the growth performance and cost implication of broiler chicks fed yellow maize supplemented with graded levels of methionine. Three hundred (300) day-old unsexed broilers chicks were randomly assigned to five (5) treatments. Each Treatment was replicated thrice with twenty (20) chiks per replicated. Five dietary treatments of sixty birds per treatment with three replicates of 20 birds as T1, T2, T3, T4 and T5 and R1, R2 and R3 respectively. Diets were formulated in which yellow maize was supplemented with graded levels of methionine at 0.1, 0.2, 0.3, 0.4 and 0.5% for T1, T2, T3, T4 and T5 respectively. The study was conducted in a Completely Randomized Design (CRD), and birds were randomly assigned to five dietary treatments. The experiment lasted for 8 weeks in two phases, 1 – 4 weeks (starter phase) and 5 – 8 weeks (finisher phase). All data generated were subjected to one way analysis of variance (ANOVA) in a Completely Randomized Design (CRD). Differences between means were compared using Duncan Multiple Range Test or the IMB Statistical package for Social Science (SPSS)/modified MINITAB. The result of growth performance revealed that the daily feed intake (DFI) were significantly (P<0.05) different among the groups .The daily weight gain (DWG) were not significantly (P>0.05) different. Feed conversion ratio (FCR) were significantly (P<0.05) influenced, but the best FCR in the final phase was in T5 (2.34). The study revealed that, yellow maize can be supplemented with graded levels of synthetic methionine at upto 0.5% level without any adverse effect on the productive performance of the birds. Feed cost (FC) was however highest in T5 (246.98) N/kg and least value in T1 (219.41) N/kg, while the total feed cost (TFC), was also highest in T5 (N1,063.46) and least in T1 (N891.13). As can be observed, FC per kg body weight gain increased with increasing levels of methionine across the treatments. Therefore, diet 1 which had 0.1% methionine gave the least cost per kg gain (N517.81) and is recommended for broiler chickens production.
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