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RISS 인기검색어
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- 저자 : Dosoky, R.M. (검색결과 2 건)
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Sara Khaled Ahmed(Sara Khaled Ahmed ),Gamal Mohamedin Hassan(Gamal Mohamedin Hassan ),Tharwat El dosoky Radwan(Tharwat El dosoky Radwan ) 한국축산식품학회 2022 Food and Life Vol.2022 No.2
Isolation of microorganisms capable of reducing toxic chromium (VI) into less toxic chromium (III) has been given attention due to their significance in bioremediation of the contaminated sites. Five isolates out of the twelve isolates were selected according to their abilities to grow in the presence of high concentration of chromium. From the five bacterial isolates, isolates FAYP2 and FAYP3 were selected according to their higher reduction percent of toxic chromium (VI) into chromium (III) and their reduction percent was 60% and 70% respectively. The isolates FAYP2 and FAYP3 were identified as Pseudomonas aeruginosa and Pseudomonas zhadogens, respectively, based on morphological and biochemical characterization and confirmed by molecular sequence analyses of amplified 16S rRNA genes with accession numbers OMO10239 and OMO019074. The results reveal that P. aeruginosa FAYP2 and P. zhadogens FAYP3 can be used for the bioremediation of wastewater effluent containing hexavalent chromium.
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Effect of Three Different Species of Hay on Dry-matter Intake and Serum Cortisol of Ewes
Sekine, J.,Abdel-Rahman, Mootaz A.M.,Ismail, A.El-Moez A.,Dosoky, R.M.,Kamel, H.E.M.,Hishinuma, M. Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.9
To determine whether the feeding of different species of hay affects the dry-matter intake and the serum cortisol level of sheep, 6 non-pregnant, non-lactating ewes were offered alfalfa (Medicago sativa) hay (Al), oats (Avena sativa) hay (Ot) and perennial ryegrass (Lolium perenne) hay (Pr) under 6 kinds of treatment including 1) change from Al to Ot, 2) Al to Pr, 3) Ot to Al, 4) Ot to Pr, 5) Pr to Al, and 6) Pr to Ot. The experimental design was a 6${\times}$6 Latin square with a 14 day period of which 9 days were a preliminary period and 5 days as a digestion trial period. The change in hay feeding was done abruptly on the first day of each period without an adaptation period. The blood from the jugular vein was collected on the first, third and the last day of each period through a sterile catheter for the analysis of cortisol. The dry-matter intake was recorded daily throughout the period. The mean daily intake of dry matter (DM, g/kg live weight) was significantly different among the 3 species of hay (Al>Ot>Pr; p<0.05). The digestibility of DM for Al and Ot was the same, but that for Pr was significantly lower than Al and Ot (p<0.05). The mean serum cortisol levels were significantly different among the hays (p<0.05). The level for Pr was the highest and that for Al was the lowest. The abrupt change of hay feeding of 6 treatments produced a significant change in the serum cortisol levels. The DM intake was inversely related to the change of the cortisol level. It is suggested that the animal' intake response to different species of hay may be partly motivated by the psychological feelings toward the hay offered.
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