Search Result of "molting"

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ผลงานตีพิมพ์ในวารสารวิชาการ

Responses of laying hens to induce molting procedures using cassava meal of variable length with or without recovery period

ผู้แต่ง:ImgDr.Nirat Gongruttananun, Associate Professor, ImgKanokporn Saengkudrua,

วารสาร:

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ผลงานตีพิมพ์ในวารสารวิชาการ

Chitobiase, Proteinase, Glycogen and some Trace Elements during Molting Cycle of Mud Crab (Scylla serrata Forsk?l 1775)

ผู้แต่ง:ImgDr.Jintana Salaenoi, Assistant Professor,

วารสาร:

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การประชุมวิชาการ

ปริมาณคาโรทีนอยด์ที่สะสมตลอดวงจรการลอกคราบของปูทะเล (Scylla serrata) (2008)

ผู้แต่ง:

การประชุมวิชาการ:

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การประชุมวิชาการ

Gutathione-S-transferase in Molting Cycle of Mud Crab (Scylla serrata)

ผู้แต่ง:Imgภัทราวดี ศรีมีเทียน, ImgDr.Jintana Salaenoi, Assistant Professor,

การประชุมวิชาการ:

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งานวิจัย

เม็ดเลือดและกิจกรรมของเอนไซม์ในวงจรการลอกคราบของปูทะเล (2010)

หัวหน้าโครงการ:Imgดร.จินตนา สและน้อย, ผู้ช่วยศาสตราจารย์

แหล่งทุน:ทุนอุดหนุนวิจัยมก.

ผลลัพธ์:วารสาร (3)

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Variations of Catalase and Glutathione Activities in Molting Cycle of Mud Crab (Scylla serrata))

ผู้เขียน:Imgดร.จินตนา สและน้อย, ผู้ช่วยศาสตราจารย์, Imgภัทราวดี ศรีมีเทียน, Imgดร.มิ่งขวัญ มิ่งเมือง, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

The activities of the antioxidative enzyme, catalase (CAT), and the non-enzyme, glutathione (GSH) in 12 stages over the molting of mud crab (Scylla serrata) collected from Chanthaburi Province were determined. The stages were defined as: A1 (6-hour postmolt), A2.1 (12-hour postmolt), A2.2 (24-hour postmolt), B1 (2-day postmolt), B 2.1 (3-day postmolt), B2.2 ( 5-day postmolt), B2.3 (7-day postmolt), B2.4 (10 day postmolt), C (intermolt), D1 (2-week premolt), D2 (1- week premolt) and D3 (2-day premolt). The results revealed that CAT which controlled and eliminated excessive H2O2, increased in premolt (D1–D3) then dropped in the early postmolt stages (A1–A2.2) and increased again in the late postmolt stages (B1–B2.4). GSH, a reducing substance, which is also involved in the detoxification of H2O2 showed the same pattern in most tissues except in the hepatopancreas where it increased from the early postmolt stage (A1) and continued to increase through the postmolt stages. The variation in activity of CAT and GSH corresponded well with the metabolic activity through the molt cycle.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 048, Issue 1, Jan 14 - Feb 14, Page 64 - 71 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Variation of Calcium, N-acetylglucosamine, Glucosamine and Glucose Content during Molting Cycle of Mud Crab (Scylla serrata Forsk?l 1775))

ผู้เขียน:Imgดร.จินตนา สและน้อย, ผู้ช่วยศาสตราจารย์, ImgJitlada Bootpugdeethum, Imgดร.มิ่งขวัญ มิ่งเมือง, รองศาสตราจารย์, Imgนางอมรา ทองปาน, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Calcium, N-acetylglucosamine, glucosamine and glucose content in the tissues of mud crab (Scylla serrata Forsk?l 1775) during molting cycle were determined. The results showed that calcium in gill decreased gradually from intermolt (C) to the lowest level of 6,527 ppm at 2-day premolt (D3) and increased again from 6-h postmolt (A1) to the highest level of 24,058.50 ppm at 7-day postmolt (B2.3) which was similar in pattern to calcium in the integument but of which at lower range (1,360.10-8,044.30 ppm). The highest content in haemolymph was found at 2-day premolt (D3). Variation of Nacetylglucosamine, a major component of chitin, showed similar pattern to calcium. Their content in gill and integument decreased from intermolt (C) to premolt (D1-D3) and increased at postmolt stages (A1-B2.3) while the pattern was opposite to that found in haemolymph which increased at premolt (D1- D3) and decreased at postmolt stages (A1-B2.3). For glucosamine, however, the content was quite low in both gill and integument but was moderately high at late postmolt in haemolymph. Glucose, on the other hand, seemed to be quite stable throughout the molting cycle (averaged 0.8973 ? 0.1489 % mg) in integument, but the profiles in hepatopancreas and gill were similar having the highest level at 5-day postmolt (B2.2). Glucose in muscle was at its peak of 0.7265 ? 0.1016 % mg at 2-day premolt (D3) followed by the ten times high level in haemolymph of 12.2020 ? 0.4807 % mg at late postmolt (B2.1). Variations of calcium, N-acetylglucosamine, glucosamine and glucose content corresponded to the changing of chemical composition of the tissues during chitin degradation of the old shed, chitin biosynthesis, mineralization of the new structure and the transportation of these substances between tissues.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 3, Jul 06 - Sep 06, Page 668 - 679 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Chitobiase, Proteinase, Glycogen and some Trace Elements during Molting Cycle of Mud Crab (Scylla serrata Forsk?l 1775))

ผู้เขียน:Imgดร.จินตนา สและน้อย, ผู้ช่วยศาสตราจารย์, ImgJitlada Bootpugdeethum, Imgดร.มิ่งขวัญ มิ่งเมือง, รองศาสตราจารย์, Imgนางอมรา ทองปาน, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Activity profiles of chitobiase, proteinase and the content of glycogen and trace elements in gill, integument and haemolymph of mud crab (Scylla serrata) during molting cycle were determined. Chitobiase activity was at the highest level of 0.5467?0.0136 ?mol min-1mg protein-1 at 1-week premolt (D2) in gill and at 0.1413?0.0026 ?mol min-1 mg protein-1 in integument but reached the maximum level of 0.0851?0.0123 ?mol min-1mg protein-1 at 24-h postmolt (A2.2) in haemolymph. The high activities of proteinase, on the other hand, were found to be 0.6511 ? 0.0934 units mg protein-1 at 7-day postmolt (B2.3), 0.1553 ? 0.0419 units mg protein-1 at 1-week premolt (D2), and 0.1827?0.0110 units mg protein-1 at 12-h postmolt (A2.1) in gill, integument and haemolymph, respectively. These two enzymes are needed for carapace degradation as well as for chitin synthesis in preparation for carapace formation. For glycogen content, high accumulation of glycogen in the integument was observed throughout the molting cycle except at intermolt (C). In gill, however, the level of glycogen was high only before molting began (D2) while glycogen content in hepatopancreas and muscle, energy reserve tissues, was rather fluctuated but reached the maximum levels at 24-h postmolt (A2.2). As for trace elements, copper, a major component of hemocyanin, was found at high level at intermolt stage (C) in all tissues while magnesium, involving both nerve conduction and muscle contraction, showed the highest content at 7-day postmolt (B2.3) and 1-week premolt (D2) in integument and haemolymph, respectively. On the other hand, zinc showed high content at premolt stage in haemolymph and early postmolt stage in gill supporting its function in calcification. The results confirmed the roles of chitobiase, proteinase, glycogen, and trace elements which corresponded well with molting stages and physiological changes of mud crab.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 2, Apr 06 - Jun 06, Page 517 - 528 |  PDF |  Page 

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