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Asian Journal of Poultry Science
Year: 2013  |  Volume: 7  |  Issue: 2  |  Page No.: 55 - 64

Effect of Dietary Maize Substitution with Sweet Potato Meal on Performance of Growers (10-22 weeks) and Subsequent Egg Production (23-35 weeks)

S.B. Afolayan, I.I. Dafwang, A. Sekoni and J.O. Jegede    

Abstract: A study was conducted to compare maize and Sweet Potato Meal (SPM) as sources of energy in grower chickens’ diets while another was conducted to determine the effect of SPM on the performance of the birds used in the grower study. A total of 210 pullets aged 10 weeks of Shika Brown breed were used for the grower study, while a total of 180 chickens aged 23 weeks acquired from the proceeds of the first study were used for the layer study. Five treatments comprising of diets containing 0, 10, 20, 30 and 40% levels of SPM were applied in both experiments in a completely randomized manner and performance of birds were monitored at both phases. Each of the experiments lasted 12 weeks. Result of grower study showed that the control, 10 and 20% SPM diets produced similar weight gain, final weight, feed efficiency and feed cost kg-1 weight gain and were superior (p<0.05) to 30 and 40% SPM diets. Result of the layer experiment showed that the control, 10 and 20% SPM diets produced similar final body weight, weight gain, feed intake, hen-day egg production and cumulative egg production/bird which were significantly better (p<0.05) than those produced by the 30 and 40% SPM diets. Ages at 1st egg and at 5% production were least (p<0.05) for the control birds while the age at 50% production was least for the 10% SPM diets. From the result, it is inferred that grower chicken or young layers should not be fed with diets containing more than 20% SPM.

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