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Articles by Kanokporn Poungpong
Total Records ( 3 ) for Kanokporn Poungpong
  Kanokporn Poungpong , Eisuke Sumiyoshi and Chaiyapoom Bunchasak
  Background and Objective: This study was designed to investigate the effects of hydrolyzable tannoids (gallotannoids) on the productive performance and stress hormone levels (cortisol) of broilers, from hatching to 42 days of age, under high environmental stresses (i.e. heat stress, high stocking density, dirty litter). Materials and Methods: Two hundred and eighty-eight male broiler chickens (Ross 308 strain) were fed a corn-soybean meal-based diet under high stress conditions. The birds were devided into three groups: (1) control group, (2) group that received synthetic vitamin C at 286 ppm and (3) group that received gallotanoid at 100 ppm. Feed and water were offered ad libitum. Results: Gallotannoids significantly improved body weight gain (BWG) and feed conversion ratio (FCR) compared to the control and synthetic vitamin C groups (p<0.05) during the finisher period (days 35-42). During the overall period (days 0-42), gallotannoids significantly improved the European production efficiency factor (EPEF) and FCR compared to the control group (p<0.05), whereas the synthetic vitamin C did not significantly improve these measures (p>0.05). Blood cortisol hormone levels were decreased by the synthetic vitamin C, as well as by the gallotanoids (p>0.05). Conclusion: Results indicate that, at the tested doses and under high stress conditions, gallotannoid supplementation can improve broiler production performance more efficiently than synthetic vitamin C.
  Witchanun Juntanapum , Theerawit Poeikhampha , Kanokporn Poungpong , Choawit Rakangthong , Pudcharaporn Kromkhun and Chaiyapoom Bunchasak
  Background and Objective: This study was conducted to evaluate the effects of supplementation of Lysophosphatidylcholine (LPC) in diets on production performance, egg quality and intestinal morphology of laying hens. Materials and Methods: A total of 288 commercial laying hens (Lohmann brown-classic) from 33-46 weeks of age were used in this study. The hens were divided into 3 groups of 8 replications with 12 hens each. According to the experimental groups, hens were fed as 1) control diet, 2) control diet with 0.05% LPC and 3) control diet with 0.10% LPC. Results: At the end of the trial, supplementations of LPC (0.05 and 0.10%) significantly improved feed conversion ratio (FCR), increased egg size, decreased feed intake and reduced feed cost per egg weight (FCE) (p<0.01), although significant effect on percentage of egg production, egg weigh and egg mass were not observed. Neither of internal and external egg qualities were influenced by LPC supplementation. In term of morphology, adding LPC significantly decreased villi height in the segment of duodenum and conversely increased in the jejunum (p<0.05). Conclusion: It is concluded that supplementation of LPC may improve nutrients utilization (digestion or/and absorption) via the modification of gut morphology.
  Chudapun Puangkhum , Choawit Rakangthong , Theerawit Poeikhampha , Kanokporn Poungpong and Chaiyapoom Bunchasak
  Objective: The effect of mixed enzymes supplementation in the diet of meat-type ducks were determined on the production performance, carcass yield and gastrointestinal morphology from 1-45 days of age. Materials and Methods: A total of 384 ducks were divided into 4 treatments and each treatment consisted of 6 replicates of 16 ducks each. A completely randomized design with a 2×2 factorial pattern was used with 2 main effects: (1) Nutrients levels (D) (conventional diet, CD and low protein and energy diet, LD) and (2) Multi-enzyme supplementation (E) (non-supplemented, NS and supplemented, S). Results: In terms of nutrient levels, reduction of protein and energy in diet (LD) significantly depressed the average body weight (BW, p<0.05) and average daily gain (ADG, p<0.05) during the starter period. Moreover, the feed conversion ratio (FCR) of the LD groups was poor (p<0.05) throughout the experimental period. Supplementation with multi-enzymes (S) had no significant effect on production performance but reduced body fat accumulation (subcutaneous and abdominal fat, p<0.05). There was an interaction effect between D and E (p<0.05) on the villus height/crypt depth ratio (V/C ratio) of the duodenum, that is, the supplementation of multi-enzymes in the LD group decreased the V/C ratio. Conclusion: Throughout the study, low dietary protein and energy contents did not depress the growth rate since the ducks could compensate by increasing their feed intake to achieve a maximal growth rate, though consequently, the FCR was poor. Supplementation with multi-enzymes did not improve production performance but fat accumulation was reduced. The effects of supplemental multi-enzymes on gut morphology should be a future focus.
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