Nontaso Ngarmnit

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Publications (2)0 Total impact

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    Article: The Effect of Roughage and Urea Solution Infusion Levels on Ruminal NH3-N Concentration and Nutrient Digestibility in Beef Cattle and Swamp Buffaloes
    Paengkoum Siwaporn, Wanapat Metha, Wachirapakorn Chalong, Nontaso Ngarmnit
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    ABSTRACT: Four, fistulated, male crossbred cattle and swamp buffaloes were randomly assigned in a 2 x 2 factorial arrangement in a 4 x 4 Latin square design. There were four combination dietary treatments; T1) UTS as a roughage and urea infusion at 50 g/h/d (50U), T2) UTS as a roughage and urea infusion at 100 g/h/d (100U), T3) CH as a roughage and urea infusion at 50 g/h/d (50U) and T4) CH as a roughage and urea infusion at 100 g/h/d (100U). Rumen fluid and blood were collected at 0, 0.5, 1, 1.5, 2, 3, 4 and 6 h-post feeding and then analyzed for total bacteria and protozoal, NH3-N, VFA and BUN, respectively. It was found that TDMI in buffoloes fed with UTS as a roughage source with both urea solution infusion were highest (P
    Silpakorn University Science and Technology Journal. 01/2010;
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    Article: Effect of Various Tropical Roughages on Rumen Ecology and Digestibility of Beef Cattle
    Paengkoum Siwaporn, Wanapat Metha, Wachirapakorn Chalong, Nontaso Ngarmnit
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    ABSTRACT: Four-fistulated, castrated male crossbred cattle were randomly allocated to a 4 x 4 Latin square design. The treatments were: T1) urea-treated (5%) rice straw (UTS); T2) cassava hay (CH); T3) fresh cassava foliage (FCF); T4) UTS: FCF (1: 1 dry matter basis). Faecal and feed samples were collected during the last seven days of each period and analyzed for DM, Ash, CP, NDF ADF and acid-insoluble ash (AIA). Rumen fluid and blood samples were collected on the last day of each period at 0, 2 and 4 h-post feeding and then analyzed for microorganisms (total viable and cellulolytic bacteria), NH3-N, volatile fatty acid (VFA) and blood urea-nitrogen (BUN). The results revealed that total viable and cellulolytic bacterial population were enhanced (P < 0.05) with UTS as the roughage source. Animals fed with FCF had a higher rumen propionate production (P < 0.05) with a lower cellulolytic bacteria count. In addition, roughage intake and total DM intake were highest by using UTS (2.2 and 2.5 %BW, respectively) as the roughage source (P < 0.05). Organic matter intakes were similar among among UTS, CH and UTS: FCF treatments (8.0, 6.8 and 8.7 kg/d, respectively). Digestion coefficients of DM and OM were similar among treatments. However CP digestion coefficients were similar among CH, FCF and UTS: FCF treatments, but were higher (P < 0.05) in CH than in UTS. It was also observed that feeding FCF as a full-feed resulted in anorexia and ataxia as well as frequent urination. Therefore FCF should only be fed fresh as part of the feed or should be fed wilted. Hence, combined use of FCF and UTS as well as CH and FCF were recommended.
    Silpakorn University Science and Technology Journal. 01/2007;
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