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Articles by Chartchai Khanongnuch
Total Records ( 3 ) for Chartchai Khanongnuch
  Watee Kongbuntad , Chartchai Khanongnuch and Saisamorn Lumyong
  The aim of this study was to determine the efficacy of xylanase supplementation in the diet on Thai native chicken performance. 36 birds (12 birds /group) were divided into three groups. The first group was administered a control diet and the second and third group were fed an experimental diet with two different levels, 10g/kg and 30g/kg, respectively. Live weight, feed intake, survivability the primary toxicity effect on organ weights and plasma biochemistries were recorded and evaluated. The results indicate that xylanase supplementation improves Thai native chicken performance by increasing live weight and decreasing feed conversion efficiency (FCE) and has no effect on survivability. Xylanase supplementation lead to a decreased blood urea nitrogen (BUN) level in 30g/kg diet, but was a slightly increased serum glutamic pyruvic transaminase (SGPT) levels. In addition xylanase supplementation had no effect on the internal organs. Therefore, it can be concluded that xylanase supplementation efficiently can improve Thai native chicken.
  Chartchai Khanongnuch , Chatchai Sa-nguansook and Saisamorn Lumyong
  The copra meal (CM) was hydrolyzed to prepare the enzymatic treated CM (ETCM) by bacterial β-mannanase. The ETCM showed markedly reduction in crude fiber about 14%, while an ether extract, nitrogen-free extract and metabolizable energy value were increased approximately 10%, 4.7% and 16.5%, respectively, compared to non-enzymatic treated CM (NTCM). The digestibility of ETCM nutrient components were also increased, especially, in case of fiber which was increased from 45.35% to 71.98%. The effect on body weight gain of broiler fed with 15% and 20% (w/w) ETCM was not significantly different (P>0.05) in all treatments. Feed consumption decreased (P< 0.05) when fed the diets containing ETCM and NTCM, but feed conversion ratio (FCR) was improved significantly (P< 0.05), especially at the level of 20% ETCM which the FCR value 2.06 was obtained compare to 2.12 of NTCM group. In addition, the number of E. coli and Salmonellae count in broiler feces were also decreased significantly when fed with ETCM diets.
  Watee Kongbuntad , Kanokporn Saenphet , Chartchai Khanongnuch and Saisamorn Lumyong
  Xylanase derived from Thermoascus aurantiacus SL16W has characteristics of high activity, heat tolerance and exhibits the potential development for industrial feed enzyme. The objective of this study was to determine the toxic effect of crude xylanase on hematological and blood biochemistry in albino rats. Crude xylanase at doses of 750, 1,500 and 4,000 U kg-1 body weight (bw) were orally administered to rats for 120 days. Hematological and blood biochemistry levels were investigated in two periods (exposure and recovery). It was found that crude xylanase had no effect on rat`s body weight. SGOT levels of treated rats significantly decreased as compared to those of control group (p=<0.05), while SGPT levels were similar in all groups. BUN levels in treated groups were higher than those of controls in exposure period, but slightly lower in recovery period. However, Creatinine levels in treated groups were not different from control group. It was suggested from the results that crude xylanase is safe for using in animals feed industry.
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