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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 4 > G.E. Onibi1, O.R. Folorunso2 and C. Elumelu1

Assessment of Partial Equi-Protein Replacement of Soyabean Meal with Cassava and Leucaena Leaf Meals in the Diets of Broiler Chicken Finishers

G.E. Onibi1, O.R. Folorunso2 and C. Elumelu1
1Department of Animal Production and Health, School of Agriculture and Agricultural Technology, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria 2Department of Animal Production, Federal College of Agriculture, Akure, Ondo State, Nigeria
Abstract :

Three hundred and fifty broiler chickens (Anak, 2000) were used to study the effect of partial replacement of soya bean meal (SBM) protein with cassava and or leucaena leaf meals. Diet 1 was the
control diet with soyabean meal but no leaf meal. Diets 2 and 3 had 30% and 60% SBM protein  respectively replaced with cassava leaf meal (CLM) protein. In diets 4 and 5, 30% and 60% of the SBM protein respectively, were replaced with leucaena leaf meal (LLM) protein. The SBM protein in diets 6 and 7 was substituted at 30% and 60% respectively with 50:50 CLM and LLM protein. The birds were assigned to the experimental diets at 10 birds per replicate and 5 replicates per treatment. The energy to protein ratios of the diets were similar. The response criteria measured were feed intake, weight gain, nitrogen retention, shank and skin pigmentation, selected carcass, organ and muscle characteristics and economics of production. The results showed that weight gain (WG, 52.1±1.00 g/day) and feed intake (134±4.37 g/day) were higher (P<0.05) in birds fed the control diets. On other diets, WG were 44.4±4.18 g (Diet 2), 43.7±2.10 g (Diet 6), 40.2±4.32 g (Diet 4), 37.2±4.13 g (Diet 3), 34.9±1.04 g (Diet 7) and 26.0±4.86 g (Diet 5) per day. Nitrogen retention was apparently highest (P>0.05) for birds on the control diet. Shanks of birds on leaf meal diets were more pigmented (P<0.05) than the control. Carcass, organ and muscle characteristics were not affected (P<0.05) by dietary treatments. Cost of feed per kilogram weight gain were similar for broiler on Diets 1, 2 and 6 (x110, x108 and x109 respectively) and highest for Diet 5 (x150). It was concluded that 30% replacement of soyabean meal protein in a 14% soyabean meal ration with cassava (10.50% of diet) or 50:50 cassava and leucaena (9.55% of diet) leaf meal protein would optimize growth performance and economic returns from broiler production especially during periods of high cost and scarcity of soyabean meal.

Keywords :
Chickens, protein replacement, leaf meals

Date Deposited : 08 Jul 2011 10:08

Last Modified : 08 Jul 2011 10:08

Official URL: http://www.pjbs.org/ijps/ijps.htm

Volume 7, Number 4, - 2008 , ISSN 1682-8356

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