Search Result of "gas production technique"

About 5 results
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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Different Levels of Rain Tree (Samanea saman) Pods in Meal Concentrate on In Vitro Fermentation by a Gas Production Technique)

ผู้เขียน:ImgSareena Semae, ImgPhongtorn Kongmun, Imgนายชาญวิทย์ วัชรพุกก์, ศาสตราจารย์, ImgSomchai Chanpongsang, ImgSomkiert Prasanphanich

สื่อสิ่งพิมพ์:pdf

Abstract

The effect was studied of various levels of rain tree pods (RTPs) in meal concentrate on in vitro fermentation using a gas production technique. RTPs were used at levels of 0 (control), 20, 40, 60, 80 and 100% in the meal concentrate. The gas production was recorded at 2, 4, 6, 8, 10, 12, 18, 24, 36, 48, 60, 66 and 72 hr of incubation. In vitro true digestibility (IVTD), total volatile fatty acids (TVFAs), acetate (C2), propionate (C3), butyrate (C4) and ammonia nitrogen (NH3-N) were investigated. The gas production at 4 to 8 hr was significantly different (P < 0.05) among treatments. The IVTD levels in the control diet and with 20, 40 and 60% RTP levels were significantly higher (P < 0.05) than for the 80 and 100% levels of RTP. The C2 level in the control diet was the lowest but levels of C3 and C4 were higher than in the other groups. The level of NH3-N in the control diet and with levels of 20, 40 and 60% RTP levels were significantly higher (P < 0.05) than at the 80 and 100% RTP levels. This study revealed that RTPs could be an alternative feedstuff for ruminants and possibly replace meal concentrate up to 60% without any negative effect based on the in vitro study.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 047, Issue 5, Sep 13 - Oct 13, Page 704 - 711 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Nutritional Evaluation of Energy Feed Sources for Ruminant Using In Vitro Gas Production Technique)

ผู้เขียน:ImgSongsak Chumpawadee, ImgKritapon Sommart, ImgThevin Vongpralub, ImgVirote Pattarajinda

สื่อสิ่งพิมพ์:pdf

Abstract

Five energy feed sources were used to evaluate for nutritive value using the in vitro gas production technique. The rumen mixed microbe inoculums were taken from fistulated Brahman-Thai native crossbred steers. The energy feed source treatments were 1) corn meal, 2) cassava chip, 3) broken rice, 4) rice bran and 5) rice pollard. The treatments were assigned to completely randomize design (four replications). The results indicated that soluble gas fractions (a) (-32.39, -50.98, -34.02, -21.67 and -3.39 mL, respectively), the fermentation of the insoluble fraction (b) (132.39, 150.98, 134.02, 119.09 and 62.66 mL, respectively), rate of gas production (c) (0.12, 0.19, 0.08, 0.11 and 0.06 %/h , respectively) and potential of extent of gas production (a+b) (164.79, 201.97, 168.05, 140.76 and 66.05 mL, respectively) were significantly different (P<0.01) among energy feed sources. The cumulative gas volumes at 24, 48 and 96 h after incubation were significantly different (P<0.01). Cassava chip exhibited the greatest gas production characteristics and gas volume. These results together with its locally available at an inexpensive cost cassava chip was one of the potential energy source for beef and dairy cattle.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 2, Apr 06 - Jun 06, Page 430 - 435 |  PDF |  Page 

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Researcher

ดร. พงศ์ธร คงมั่น, ผู้ช่วยศาสตราจารย์

ที่ทำงาน:ภาควิชาสัตวบาล คณะเกษตร บางเขน

สาขาที่สนใจ:Ruminant Nutrition , Rumen ecology, Beef, Dairy and Goat production, Rumen biotechnology, Nutrigenomic

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Researcher

ดร. สมเกียรติ ประสานพานิช, รองศาสตราจารย์

ที่ทำงาน:ภาควิชาสัตวบาล คณะเกษตร บางเขน

สาขาที่สนใจ:การจัดการฟาร์มโคนม, การใช้ประโยชน์จากทุ่งหญ้า, การใช้เครื่องรีดนม

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