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Articles by Hossam H. Azzaz
Total Records ( 3 ) for Hossam H. Azzaz
  Hossam H. Azzaz , Tarek A. Morsy and Hussein A. Murad
  Improved ruminant’s health and its productive performance has always remained a primary goal of researchers associated with the animal production sector. Microbial feed supplements as natural growth promoters might play an important role for enhancement of health and productive performance of ruminants through prevention of disease, enhancement of desirable microbial growth in the rumen environment, stabilization of ruminal pH, altered ruminal fermentation patterns, increased nutrient digestibility and flow of nutrients to the small intestine, improved nutrient retention and reduced stress through enhanced immune response. The definition of microbial feed supplements is very broad and may include specific and nonspecific yeast, fungi, bacteria, cell fragments and filtrates. The microbial feed supplements preparations must having a beneficial effect on the host animal (non-pathogenic and non-toxic), able to produce antimicrobial agents, antagonistic toward pathogenic, have ability to adhere and colonize the epithelial cells of the rumen and the gut, capable of compete with normal microflora and metabolizing in the gut environment and genetically stable and capable of remaining viable for long periods under storage and field conditions. The use of microbial feed supplements continuously may decrease the harmful effects of the pathogenic bacterial species in the ruminant digestive system and thereby improve the animal performance.
  Hossam H. Azzaz , Hussein A. Murad and Tarek A. Morsy
  Ionophores are feed additives that alter rumen microbial populations through ion transfer across cell membranes. Although ionophores have been used widely in the ruminant’s nutrition for improved feed efficiency and control of coccidiosis. Ionophores have been studied regarding several potential effects on ruminant animals, including influences on health, meat production, milk production and reproduction. This review will provide practitioners with relevant references in the published literature regarding ionophore use in ruminants' nutrition. It should also give some guidance as to what effects might be anticipated with the use of ionophores in ruminant animals.
  Hossam H. Azzaz , Eman S.A. Farahat and Hossam M. Ebeid
  Background and Objectives: Most utilized grains in livestock feeding in Egypt are imported from abroad, therefore searching for alternative feed ingredients to replace of high cost feed grains is very important approach. This research aimed to investigate the effects of partial replacement of corn grains by Powdered Date Seeds (PDS) or PDS+fibrolytic enzymes on the productive performance of Rahmani rams and lactating Nubian goats. Materials and Methods: For digestibility trial, three mature Rahmani rams were randomly assigned to the experimental rations [Control (0% PDS), R1 (50% of corn of the control replaced by PDS), R2 (50% of corn of the control replaced by PDS) + 2 g Asperozym kg–1 DMI] using 3×3 Latin square design. For lactation trial, twenty seven lactating Nubian goats randomly assigned into three groups of nine animals each to the experimental rations using complete random design. The entire experimental periods for digestibility and lactation trials were 63 days. Rams and goats were fed dry matter according to 4% of their body weight and water was offered freely. Data were statistically analyzed by SAS (Version 8) software. Results: Rams fed R1 recorded the lowest values of ruminal fermentation characteristics (except pH) and nutrients digestibility coefficients. No significant differences were found between (R2) and control rams in all tested ruminal fermentation characteristics (except pH) and all nutrients digestibility coefficients (except CF digestibility). There were no significant differences among all groups in plasma total protein, globulin, urea, ALT, AST and cholesterol concentrations. Milk, 4% FCM and all milk constituents yields (except SNF yield) were higher (p<0.05) for control and R2 goats than R1 goats. Conclusion: The replacement of 50% of corn grains by enzymatically treated powdered date seeds had no negative effect on rumen fermentation and nutrients digestibility of Rahmani rams, as well as Nubian goat’s milk production and its component’s yields.
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