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Articles by C.E. Oyeagu
Total Records ( 3 ) for C.E. Oyeagu
  C.O. Osita , A.O. Ani , C. Ezema , C.E. Oyeagu , I.E. Uzochukwu and I.E. Ezemagu
  Background and Objective: The European Union banned the use of antibiotics for non-therapeutic purposes because of the possibility of the transfer of antibiotic resistance to pathogenic bacteria in humans. It is therefore imperative to find safe alternatives to the use of antibiotics. The aim of this study was to determine the effects of the dietary inclusion of yeast (Saccharomyces cerevisiae) on hematological and biochemical indices of West African dwarf sheep. Materials and Methods: A total of twenty four (24) lambs (12 males and 12 females) with an average weight of 10.30 kg were randomly allotted to six treatment diets in a 3×2 factorial arrangement involving grass (Panicum maximum) hay, grass-legume mixture (50:50) hay and legume (Centrosema pubescens) hay, as well as with two yeast levels (0 and 1.5 g per kg of basal diet). The six diets were abbreviated as G0, G1.5, G/L0, G/L1.5, L0 and L1.5 (G: grass, L: Legume, G/L: Grass/legume (50:50) mixture, 0: 0 g of S. cerevisiae per kg of diet and 1.5:1.5 g of S. cerevisiae per kg of diet). Results: The results showed that the packed cell volume, hemoglobin concentration and white blood cell count were significantly (p<0.05) higher for sheep fed a legume diet supplemented with S. cerevisiae compared to that for sheep fed other diets. Sheep fed the grass and legume mixture and the legume diets supplemented with S. cerevisiae had significantly (p<0.05) higher albumin values than those of sheep fed other diets. Sheep fed the legume diet without S. cerevisiae supplementation had the highest calcium values of all sheep diet groups tested. Conclusion: Based on the results obtained, the addition of 1.5g of S. cerevisiae per kg of legume diet is recommended.
  C.E. Oyeagu , C.L. Ugwuanyi , E. Onwujiariri , C.O. Osita , E.A. Akuru , A.O. Ani , E. M. Idamokoro and A.B. Falowo
  Background and Objective: In order to reduce high cost of feed which will step-down the cost of poultry products and encourage small scale and medium scale poultry production, efforts must be made by animal nutritionists to exploit and use some unconventional feed ingredients. Most of these unconventional feed ingredients such as brewer’s dried grain pose some threats (high fiber) with regards to their utilization by birds. Hence, the use of feed enzymes to reduce these threats for optimum productivity becomes necessary. The aim of the study was to determine the effect of different levels of enzyme fortified dried brewer’s grain (EDBG) on blood bio-markers, growth performance, carcass traits; and income over feed cost in a five week trial. Materials and Methods: A total of 300 day old non-sexed “Anak strain” chicks were randomly assigned to four dietary treatments with five replicates of 15 birds each. The treatments include, EDBG0, EDBG3, EDBG6 and EDBG9 for 0, 3, 6 and 9% levels of EDBG for both starter and finisher phases. Results: Growth traits for starter phase was better (p<0.05) for birds fed control (EDBG0) diet while birds fed EDBG3 recorded an improved (p<0.05) growth traits during the finisher phase of the feeding trial. Carcass yield, thigh, breast and drumstick weights of birds had the highest (p<0.05) values for birds fed EDBG3, while birds fed EDBG9 recorded the lowest (p<0.05) carcass, thigh, breast and drumstick weights. The blood bio-marker examination differ (p<0.05) among treatments for Eosinophil, Monocyte, Lymphocyte, White blood cell, Hemoglobin and Red blood cell. Hemoglobin concentration and RBC was highest (p<0.05) for birds fed EDBG0 and EDBG3. Birds fed EDBG3 recorded the highest (p<0.05) revenue from a bird produced and a better income over feed cost. Although, cost of total feed consumed was the highest for birds fed EDBG0 and EDBG3 but similar to those fed EDBG6. Conclusion: With regards to improved growth traits, improved cut yields and a better production cost as well as stable health status of broilers, 3% level of Enzyme fortified dried brewer's grain can be used safely.
  C.E. Oyeagu , V. Mlambo and V. Muchenje
  Background and Objective: Recently, the term “resistant starch” has been increasingly used in the literature to describe starch that escapes digestion in the small intestine together with non-starch polysaccharides. Exogenous enzymes have been employed to ameliorate these challenges. Hence, the optimum performance of Aspergillus xylanase on maize-soy bean meal has not been fully investigated. This study was designed to test the effects of Aspergillus xylanase on apparent nutrient digestibility, protein utilization efficiency, growth performance and size of visceral organs on broilers. Materials and Methods: Three-hundred-day-old mixed sex Cobb 500® chicks were randomly allocated to five dietary treatments with five replicates of 12 birds each. Dietary treatments include, xylanase (XYL) 0 (0 g kg–1), XYL10 (1 g kg–1), XYL15 (1.5 g kg–1), XYL20 (2 g kg–1) and XYL25 (2.5 g kg–1). Results: Results showed that birds fed XYL20 and 25 had higher (p<0.05) crude fiber and dry matter digestibility. Dietary treatment XYL20 promoted the highest (p<0.05) body weight gain (BWG) in the final week. Birds fed XYL20 recorded the best (p<0.05) feed conversion ratio during all phases of the feeding trial and the highest (p<0.05) BWG during the starter phase. Birds fed XYL20 had the highest (p<0.05) values for thigh, breast, wing and carcass yields. Both protein and energy efficiency ratios (PER and EER, respectively) were improved (p<0.05) for birds fed XYL20 during all phases. The small intestine lengths decreased (p<0.05) but spleen weights increased (p<0.05) as Aspergillus xylanase enzyme levels increased. Conclusion: The optimum Aspergillus xylanase inclusion levels that caused the greatest response for all measured parameters was 2 g kg–1.
 
 
 
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