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Articles by Chalong Wachirapakorn
Total Records ( 3 ) for Chalong Wachirapakorn
  Ruangyote Pilajun , Metha Wanapat , Chalong Wachirapakorn and Chainarong Navanukroaw
  Four, rumen-fistulated Holstein-Friesian steers were randomly assigned to four treatments according to a 4x4 Latin square design to study effects of coconut oil and sunflower oil ratio on rumen fermentation, rumen microorganisms and methane concentration in the rumen. The dietary treatments were ratios of coconut oil and sunflower oil at 100:0, 75:25, 50:50 and 25:75 for treatment 1-4, respectively. Steers were fed concentrate at 0.5% of BW (DM) and urea-treated rice straw was given ad libitum. The results were found that coconut oil and sunflower oil ratio did not affect feed intake and rumen microbial population except for total viable bacteria in which 75:25 ratio was the highest. Dietary treatments had affected nutrient digestibility and rumen fermentation especially 50:50 ratio. Methane concentration was linearly decreased when sunflower oil proportion increased. Nitrogen balance and microbial protein synthesis were similar among treatments, although microbial nitrogen supply tended to have a quadratic response to oil ratios. It is concluded that combined supplementation of coconut oil and sunflower oil could be beneficial to improve the rumen ecosystem and potential productivity in ruminants.
  Pattaya Napasirth , Chalong Wachirapakorn , Pathcharee Saenjan and Chalermpon Yuangklang
  The present study demonstrated the effect of levels of sulfate-containing compounds on methane production using in vitro gas production technique. Treatments were TMR without supplement (control) and TMR with 0.2 or 0.4% of ammonium sulfate, copper sulfate and sodium lauryl sulfate in a 3x2 Factorial in CRD with one control. Rumen fluid was collected from two rumen-fistulated beef cattle fed on a based diet. During the incubation, the gas production was recorded at 0, 2, 4, 6, 8, 10, 12, 18, 24, 36, 48, 60, 72 and 96 h. The results revealed that increased the levels of sulfate-containing compounds in the TMR diet decreased the gas accumulation and CH4 accumulation all the time. Although, the sum of the MRP did not differ among treatments, the MRP at 24 h after incubation was greatly appreciated by 0.2% of ammonium sulfate (14.53%). In addition, ammonium sulfate led to the highest IVOMD followed by the copper sulfate. Therefore, this study suggested that ammonium sulfate and copper sulfate and sodium lauryl sulfate at 0.2 and 0.4% in the TMR diet have the potential to reduce methane emission.
  Nonthasak Piamphon , Chalong Wachirapakorn , Komas Bannasan , Pariwat Pornsopin , Pichetpong Sotawong and Pongsatorn Gunun
  Objective: The current study was designed to determine the effect of Aspergillus niger or Saccharomyces cerevisiae fermented napier grass (NG) mixed with fresh cassava root (CR) on the blood biochemistry, blood enzymes, hematological parameters and nutrient digestibility in growing beef cattle. Materials and Methods: Four male beef cattle (150±10 kg) were randomly assigned according to a 4×4 Latin square design, to receive four dietary treatments: Napier grass (Control), non-microbial-fermented NG mixed with CR (F-NGCR), A. niger-fermented NG mixed with CR (AF-NGCR) or S. cerevisiae-fermented NG mixed with CR (SF-NGCR). Results: The results revealed the dry matter (DM) intake was similar among the treatments (p>0.05). The intake of organic matter (OM), ether extract (EE), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were not significantly different among the treatments (p>0.05). However, the intake of crude protein (CP) was affected by AF-NGCR and SF-NGCR compared with the control (p<0.05). The digestibility of DM, OM, CP, EE and NDF were increased in the beef cattle that consumed AF-NGCR and SF-NGCR (p<0.05). The blood biochemistry, blood enzymes and hematological parameters did not differ among the treatments (p>0.05). Conclusion: Aspergillus niger and S. cerevisiae-fermented NG mixed with CR could improve the CP intake and nutrient digestibility and had no effect on the blood biochemistry, blood enzymes and hematological parameters in growing beef cattle.
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