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RISS 인기검색어
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- 저자 : H. Gamo (검색결과 5 건)
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Santoso, B.,Kume, S.,Nonaka, K.,Kimura, K.,Mizukoshi, H.,Gamo, Y.,Takahashi, J. Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.4
This study was conducted to investigate the effect of supplementation of galacto-oligosaccharides (GOS) on methane emission, nutrient digestibility, energy utilization and blood metabolites by Holstein cows fed silages. In two sequential digestion and respiratory trials, two non-lactating Holstein cows were arranged to a balanced incomplete block design. Experimental diets consisted of two silage types; orchardgrass (Dactylis glomerata L.) based silage (OS), mixed silage (orchardgrass based silage and alfalfa (Medicago sativa L.) silage) (MS), while two GOS levels were without supplementation (0) and 2% of dry matter intake supplementation (2). Four combination diets were OS-0, OS-2, MS-0 and MS-2. Significant effects of silage types and GOS supplementation levels were not observed for DM and OM intake. Whereas the digestibility of OM, NDF and ADF was significantly (p<0.05) higher in cows fed OS with and without GOS compared cows fed MS diets. As percentage of GE intake, fecal energy loss for OS diets was significantly (p<0.05) declined than for MS diets. In contrast, cows fed MS diets had lower (p<0.05) urine energy loss as a proportion of GE intake compared to OS diets. Energy loss as CH4 and heat production was numerically increased when cows fed both OS and MS with GOS supplementation. Compared to OS, CH4 emission in cows fed MS was numerically decreased by 10.8 %. Methane conversion ratio (energy loss as CH4 per unit of GE intake) for OS-0, OS-2, MS-0 and MS-2 were 7.1, 7.2, 6.8 and 7.0, respectively. Plasma of glucose and urea-N concentration were significantly (p<0.05) elevated from 1 h to 6 h after feeding, otherwise total protein in plasma was declined (p<0.01) at 6 after feeding.
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Sar, C.,Santoso, B.,Gamo, Y.,Kobayashi, T.,Shiozaki, S.,Kimura, K.,Mizukoshi, H.,Arai, I.,Takahashi, J. Asian Australasian Association of Animal Productio 2004 Animal Bioscience Vol.17 No.1
The objective of the present study was to determine whether ${\beta}$1-4 galacto-oligosaccharides (GOS) and Candida kefyr combined with nitrate as manipulators could suppress rumen methanogenesis without nitrate poisoning in sheep. Four rumen fistulated wethers were allocated to a $4{\times}4$ Latin square design. Nitrate (1.3 g $NaNO_3$ $Kg^{-0.75}$body weight) with and without GOS and Candida kefyr were administered into the rumen through fistula as a single dose 30 min after the morning meal. GOS and Candida kefyr were supplemented by sprinkling onto the feed and through rumen fistula, respectively. The four treatments consisted of saline, nitrate, nitrate plus GOS and nitrate plus GOS plus Candida kefyr. Physiological saline was used as the control treatment. Compared to saline treatment, the administration of nitrate alone resulted in a very marked decrease in rumen methanogenesis and an increase in rumen and plasma nitrite production and blood methaemoglobin formation consequently causing a decline in oxygen consumption, carbon dioxide production and metabolic rate. When compared to nitrate alone, the simultaneous administration of nitrate with GOS decreased nitrite accumulation in rumen and plasma and nitrate-induced methaemoglobin, while retaining low methane production. However, GOS could not fully restore metabolic parameters reduced by nitrate. When compared to the simultaneous administration of nitrate with GOS, the simultaneous administration of nitrate with GOS plus Candida kefyr lowered rumen methanogenesis to a negligible level, but did not decrease rumen and plasma nitrite accumulation as well as blood methaemoglobin formation. Thus, these results suggest that combination of nitrate with GOS may be a potent manipulator to suppress rumen methanogenesis with abating the hazards of nitratenitrite toxicity in ruminants.
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수종(數種)의 비두과(非豆科) 식물(植物)로 부터의 질소고정균(窒素固定菌)의 분리(分離)에 관(關)한 연구(硏究)
안상배,포생탁마,육창수,Ahn, Sang-Bae,Gamo, H.,Yuk, Chang-Soo 한국토양비료학회 1990 한국토양비료학회지 Vol.23 No.1
수종(數種)의 비두과식물(非荳科植物)의 뿌리로 부터 질소고정균(窒素固定菌)을 분리(分離)하여 분리(分離)된 균(菌)에 대(對)해서 숙주식물(宿主植物)의 접종실험(接種實驗)을 하여 유효균(有效菌)의 선발(選拔)을 한 결과(結果) 1. 9개(個)의 식물(植物)에 대(對)해서는 시금치, 배추, 오이, 갓 및 가지에서 비교적(比較的) 높은 아세칠렌 환원능(還元能)을 가진 균주(菌株)를 얻었고 2. 그 중(中)에서 아세칠렌 환원능(還元能)이 큰 4개(個)의 숙주식물(宿主植物)중 시금치, 배추, 오이에서 양호(良好)한 생육(生育)을 하는 균주(菌株)를 찾았다. 특(特)히 시금치에서 접종효과(接種效果)가 현저(顯著)하였다. 3. 이상(以上)의 결과(結果)로 부터 비두과식물(非荳科植物)의 뿌리에도 약한 협생(協生)을 하는 질소고정균(窒素固定菌)이 생육(生育)되고 있어 뿌리의 생장(生長) 및 분화(分化)를 촉진(促進)시켜 지상부(地上部)의 생육(生育)을 왕성하게 하는 것으로 판단(判斷)된다. A number of nitrogen-fixing microorganisms were isolated from roots of non-legumious crops and evaluated for their nitrogen-fixing ability on their host crops. The results are summarized as follows: 1. Among nitrogen-fixing isolates obtained from 9 different crops, several isolates showed relatively higher level of acetylene reduction activity on Spinach, Chinese cabbage, Cucumber, mustard and Egg plant. 2. When the isolates were inoculated into 4 host crops, a number of isolates were found to grow well on Spinach, Chinese cabbage and Cucumber, but particularly well on the former. 3. Results of this study suggest that nitrogen-fixing a symbiotic microorganisms are also present and able to grow well on roots of non-legumious crops, and stimulate plant growth by promoting growth and differentiation of roots.
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