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Articles by H. H. Azzaz
Total Records ( 2 ) for H. H. Azzaz
  G. E. Aboul-Fotouh , G. M. El-Garhy , H. H. Azzaz , A. M. Abd El-Mola and G. A. Mousa
  Objective: Fungal cellulase production under the optimum conditions and investigates the impact of the produced cellulase on degradation of goat’s rations compared with commercial cellulase source. Materials and Methods: Asperigillus niger, Asperigillus flavus, Asperigillus fugimatus, Trichoderma viride and Penicillium chrysogenum were separately grown as stand cultures in 250 mL conical flasks containing 50 mL of cellulose powder medium for screening their ability for cellulase production. In the in vitro trial, degradation of dry matter and organic matter were determined for goat’s ration. The ration was supplemented separately with locally produced cellulase (Asperozym) and commercial cellulase source (Phytabex plus®) at 4 levels (500, 1000, 1500 and 2000 U kg–1 DM) compared with the control. Results: Asperigillus niger had the highest cellulase activity reached 0.44 U mL–1. The maximum production of cellulase by A. niger was achieved at 10% rice straw, inoculum size of 4%, initial pH of growth medium 6.0 and peptone as a nitrogen sources at a concentration of 0.33 g N L–1. Increasing the Asperozym and Phytabex plus® addition levels up to 1000 U kg–1 DM gave the maximum (p<0.05) values of dry matter and organic matter degradation. Conclusion: The locally cellulase production for feeding animals may reduce the cost of importation and encourages self-reliance.
  H. H. Azzaz , Eman S.A. Farahat , T. A. Morsy , Hend A. Aziz , Fatma I. Hadhoud and M. S. Abd-Alla
  Objective: This study was designed to evaluate impact of adding M. oleifera and E. purpurea dried leaves to diets of Rhamani lactating ewes on their rumen fermentation characteristics, nutrients digestibility, blood parameters, milk yield, composition and its fatty acid profile. Materials and Methods: Fifteen Rhamani lactating ewes after 1 week of parturition were assigned randomly into three groups of 5 animals each using complete random design. The entire experimental period was 84 days. Ewes were fed dry matter according to 4% of their body weight. The first group was fed the basal diet which consisted of 30% CFM and 70% berseem (control diet). The second group was fed the control diet supplemented with Moringa oleifera (MO) dried leaves at 15 g kg–1 DM (T1), while the third group was fed the control diet supplemented with Echinacea purpurea (EP) dried leaves at 15 g kg–1 DM (T2). Results: The ewes fed MO supplemented diet (T1) showed significant increase in most of ruminal parameters (except ruminal pH) and nutrients digestibility coefficients followed by EP supplemented ewe’s diet (T2), while MO and EP supplementation decreased ruminal protozoal count significantly. There were no significant differences among all groups in blood albumin, globulin, ALT, AST and total lipids concentrations, but the ewes fed MO supplemented diets had higher (p<0.05) plasma protein and glucose values than those of control. The supplemented diets with MO and EP increased ewe’s milk productivity by 12.75 and 4.4%, respectively compared with the control diet. Milk component’s yield were higher (p<0.05) for MO supplemented ewes group than the other groups (control and T2). The EP treated ewes recorded the lowest (p<0.05) milk somatic cells count. The supplemented diets with MO and EP increased milk total unsaturated fatty acids by 14 and 11%, respectively compared with the control diet. Conclusion: The supplemented diets with MO and EP enhanced the performance of Rhamani lactating ewes with no harmful effects on their health.
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