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Articles by C. Ezema
Total Records ( 4 ) for C. Ezema
  C. Ezema and D.C. Eze
  This study investigated the weight gain performance and economic benefit of probiotic (Saccharomyces cerevisiae) supplementation in PKC based broiler diet. The ideal level of inclusion for optimum broiler productivity was also determined. A total of 140 broiler chicks were randomly distributed into seven groups of 20 birds each. Each group was subdivided into four replicates of five birds each. Groups 1-5 were placed on experimental diet made of 70% basal diet and 30% PKC. Groups 1-4 had probiotic (yeast) supplement at levels of 0.4 gm yeast/kg, 0.8 gm yeast/kg, 1.2 gm yeast/kg and 1.6 gm yeast/kg of feed respectively. Group 5 had no yeast (control 1). Group 6 had no PKC but had yeast (1.2 gm yeast/kg diet). Group 7 had no PKC and no yeast (control 2). All the groups were fed ad libitum. Daily feed intake and weekly weight gain were determined. The duration of the study was 10 weeks. There was no significant difference in feed intake. All the supplemented groups (groups 1-4 and 6) had higher weight gain and higher feed efficiency than the controls (groups 5 and 7). Group 2 had mean weight gain of 2.695±0.086 kg/bird which was significantly heavier (p<0.05) than the rest. Group 2 performed significantly better than others in weight gain and efficiency of feed utilization. The cost of feed to produce 1 kg live weight gain was cheapest in group 2 (N87.62/kg) and most costly in group 7 (N138.83/kg). Probiotic inclusion level of 0.8 gm yeast/kg diet was therefore recommended for optimum broiler production and maximum economic gain.
  Irene U. Chima , M.C. Uchegbu , I.C. Okoli , C. Ezema and S.N. Wehke
  Diseases and infections have always been a major concern to intensive poultry production industry. Pathogen contamination of farming environments can be prevented using proper health care products such as disinfectants. This study evaluated the efficiency of commonly used disinfectants against bacteria occurring in intensive poultry farming environments in Imo State, Nigeria. The efficacy of six commercial disinfectants namely; Izal®, Z-germicide®, Diskol®, Virkon®, Vox® and CID 20® in reducing the number of micro-organisms was assessed. Among the tested disinfectants, Virkon® (oxidizing agents) was the most efficient, reducing the micro-organisms by 95%. The in vitro test carried out to verify the effectiveness of disinfectants did not consider the adverse conditions found in the poultry farms. Therefore, the evaluation of the efficacy of on-farm reconstituted disinfectants over time was also carried out. The results indicated that efficacy of all the disinfectants was reduced during the afternoon. However, efficacy gradually increased during the evening for all the disinfectants but not as much as was observed in the morning. Temperature, it seems affects the activity of the disinfectants against the bacterial organisms.
  C. Ezema and D.C. Eze
  This study investigated the effect of probiotic (Saccharomyces cerevisiae) on growth rate and evaluated the economic benefit of this supplementation in growing rabbits. Twenty male crossed-bred weaner rabbits were randomly divided into four groups (A, B, C and D) of five rabbits each. Each rabbit served as a replicate. They were fed pelleted grower mash and groups A to C had probiotic supplementation at varied levels of 0.08, 0.12 and 0.16 g/kg of diet, respectively. Group D had no yeast (control). Feed and water were given ad libitum. Daily feed intake was determined and the rabbits were weighed weekly. The study lasted thirteen weeks. Results showed that all the probiotic supplemented groups had higher but not statistically significant (p>0.05) feed intake and significantly (p<0.05) higher weight gain than the control. Cost of experimental diet per kilogram of live weight gain was cheapest (69.68) in group B (0.12 g yeast/kg diet) than other groups. Group B (0.12 g probiotic/kg of diet) was thus recommended for maximum weight gain and optimum economic benefit in rabbit production.
  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.
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