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Articles by J.O. Oyedeji
Total Records ( 2 ) for J.O. Oyedeji
  J.O. Oyedeji , H.I. Ajayi and T. Egere
  One hundred and sixty (160) one day old Ross 355 broiler chicks were used in an experiment to determine the effects of supplementing brewer`s dried grain with Levucel SB yeast. Four experimental diets were used. Diet 1 which served as control had 0.0 mg kg-1 dietary inclusion level of yeast. Diets 2, 3 and 4 which had higher level of brewer`s dried grain were supplemented with 200, 250 and 300 mg of yeast per kg of diet respectively. Feed and water were supplied ad libitum. The experiment lasted for four weeks. Results at the end of the experiment showed that, feed intakes were not significantly affected by yeast supplementation. However, live weight gains and feed conversion ratios of broilers fed diets with yeast supplementation were significantly improved (p<0.05). Cost of feeding to 4 weeks of age was also significantly reduced for these groups of broilers (p<0.05). Dietary yeast supplementation did not affect broiler livability. Results of nutrient retention trial showed that while protein and fat retentions were comparable among broilers in all groups whereas fibre retention was significantly increased by yeast supplementation (p<0.05). It was concluded that, Levucel SB yeast fed at either 250 or 300 mg kg-1 to supplement 26% inclusion of brewer`s dried grain in broiler starter diet could enhance body weight gain, feed conversion and fibre retention. In addition, such supplementation could also result in lowering cost of feeding.
  J.O. Oyedeji , O.O. Olasupo , P.A. Ekunwe and O.T. Okugbo
  An experiment was conducted to evaluate the use of a single diet containing 18% crude protein (CP) and 3000kcal/kgME as an alternative feeding regimen to 3 other conventional feeding standards for broiler production. Three hundred and twenty (320) Anak broilers were randomly divided into four treatment groups. The first three groups served as control while the 4th was the tested treatment. Broilers in group 1(G1) representing control 1 were fed diet with 23% CP 0-3 weeks, 20% CP 3-6 weeks and 16% CP 6-8 weeks. While those in group 2 (G2) representing control 2 were fed diet with 23% CP 0-6 weeks and 14% CP 6-8 weeks. Also broilers in group 3 (G3) representing control 3 were fed diet with 20% CP 0-4 weeks and 16% CP 4-8 weeks, while those in group 4 were fed 18% CP 0-8 weeks. All diets contained 3000kcal/kg of metabolizable energy. The birds were kept in battery brooder cage for 8 weeks. Feed and water were supplied ad libitum. At the 8th week, 10 birds were randomly selected from each of the four treatment groups and starved for 18 hours. They were killed by cervical dislocation and used to determine the carcass parameters. Performance results at 8 weeks showed that broilers fed on 18% CP and 3000kcal/kg ME had the lowest feed intake (P<0.05). Although the weight gain was significantly reduced, broiler in the group had comparable feed gain ratio with those on two of the control groups(p>0.05) and better feed to gain ratio than the third control group (p<0.05). Mortality was not significantly influenced by any of the dietary treatments (P>0.05). Dietary crude protein CP 18% and 3000kcal/kgME for broilers resulted in better carcass weight, breast meat yield and gizzard weight when compared with the controls (P<0.05). It also reduced abdominal fat content (p<0.05). Economically, feeding broiler on diet of 18% CP and 3000kcal/kg of energy for 0-8 weeks also recorded a significantly reduced cost benefit ratio a factor that determines how best the production cost is utilized (P<0.05). It was then concluded that using dietary CP 18% and 3000kcal/kgME for feeding broilers from 0-8 weeks, could be an alternative to the conventional feeding methods currently used for broilers where they are fed 2 or 3 different diets in a space of 0-8 weeks where they are expected to be marketed. It was also noted that such feeding method would be suitable for poultry farmers who practice on-farm feed production.
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