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ผลงานตีพิมพ์ในวารสารวิชาการDigestive enzymes and in-vitro digestibility of different species of phytoplankton for culture of the freshwater pearl mussel, Hyriopsis (Hyriopsis) bialatusผู้แต่ง: Supannapong, P, Pimsalee, T, A-Komol, T,  Dr.Arunee Engkagul, Assistant Professor , Dr.Uthaiwan Kovitvadhi, Associate Professor , Kovitvadhi, S, Rungruangsak-Torrissen, K, วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการDevelopment of digestive enzymes and in vitro digestibility of different species of phytoplankton for culture of early juveniles of the freshwater pearl mussel, Hyriopsis (Hyriopsis) bialatus Simpson, 1900ผู้แต่ง:Areekijseree, M, Dr.Arunee Engkagul, Assistant Professor, Kovitvadhi, S, Dr.Uthaiwan Kovitvadhi, Associate Professor, Mrs.Amara Thongpan, Associate Professor, Rungruangsak-Torrissen, K, วารสาร: |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Characterization and Activity of Digestive Enzymes in Different Sizes of Nile Tilapia (Oreochromis niloticus L.)) ผู้เขียน:รุ่งกานต์ กล้าหาญ, ดร.นนทวิทย์ อารีย์ชน, รองศาสตราจารย์ , ดร.เรืองวิชญ์ ยุ้นพันธ์, ผู้ช่วยศาสตราจารย์ , ดร.อรุณี อิงคากุล, ผู้ช่วยศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe activity of protease, amylase and lipase from the pseudostomach, upper intestine, lower intestine and liver of 5.7, 35.8 and 92.1 g male Nile tilapia (Oreochromis niloticus L.) was determined. Protease activity had an optimal pH of 12, 9 and 9 for the 5.7, 35.8 and 92.1 g fish respectively and the highest specific activity was found in the 35.8 g fish. Amylase activity had an optimal pH of 6, 7 and 2, respectively and the highest specific activity was found in the 92.1 g fish. Lipase activity had an optimal pH of 8, 7 and 8, respectively and the highest specific activity was found in the 35.8 g fish. In all sizes of tilapia, amylase activity was significantly higher in the liver than other organs (P<0.01). Protease and lipase activity in the lower and upper intestine respectively of the 5.7 and 35.8 g fish were significantly higher than in other organs (P<0.01). This study indicated that different sizes of fish had different levels of enzymatic activities. Middle-sized fish appeared to have the highest specific activity of protease and lipase, while the large fish had the highest specific activity of amylase. These results will be used as a basis for suitable feed formulation for different sizes of Nile tilapia so that optimum nutritional values and cost-effectiveness can be achieved. |
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ผลงานตีพิมพ์ในวารสารวิชาการEffects of different modified diets on growth, digestive enzyme activities and muscle compositions in juvenile Siamese fighting fish (Betta splendens Regan, 1910)ผู้แต่ง:Thongprajukaew, K., Dr.Uthaiwan Kovitvadhi, Associate Professor, Kovitvadhi, S., Somsueb, P., Rungruangsak-Torrissen, K., วารสาร: |
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ผลงานตีพิมพ์ในวารสารวิชาการImproving the nutritive value of mulberry leaves, Morus spp. (Rosales: Moraceae) for silkworm larvae, Bombyx mori (Lepidoptera: Bombycidae) using gamma irradiationผู้แต่ง:Pipatpong Chundang, Karun Thongprajukaew, Dr.Uthaiwan Kovitvadhi, Associate Professor, Banthari Chotimanothum, Dr.ATTAWIT KOVITVADHI, Assistant Professor , Mrs.Pannee Pakkong, Associate Professor , วารสาร: |
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