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http://dx.doi.org/10.5713/ajas.18.0517

Mixed organic acids improve nutrients digestibility, volatile fatty acids composition and intestinal microbiota in growing-finishing pigs fed high-fiber diet  

Li, Miao (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
Long, Shenfei (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
Wang, Qianqian (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
Zhang, Lianhua (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
Hu, Jiangxu (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
Yang, Jie (Yunnan Kuaidaduo Animal Husbandry Technology Co., LTD)
Cheng, Zhibin (College of Animal Science and Technology, Yunnan Agricultural University)
Piao, Xiangshu (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.32, no.6, 2019 , pp. 856-864 More about this Journal
Abstract
Objective: The objective of this study was to investigate effects of mixed organic acids (MOA) on nutrient digestibility, volatile fatty acids composition and intestinal microbiota in growing-finishing pigs fed high wheat bran diet. Methods: Six crossbred barrows ($Duroc{\times}Landrace{\times}Yorkshire$), with an average body weight $78.8{\pm}4.21kg$, fitted with T-cannulas at the distal ileum, were allotted to a double $3{\times}3$ Latin square design with 3 periods and 3 diets. Each period consisted of a 5-d adjustment period followed by a 2-d total collection of feces and then a 2-d collection of ileal digesta. The dietary treatments included a corn-soybean-wheat bran basal diet (CTR), mixed organic acid 1 diet (MOA1; CTR+3,000 mg/kg OA1), mixed organic acid 2 diet (MOA2; CTR+2,000 mg/kg OA2). Results: Pigs fed MOA (MOA1 or MOA2) showed improved (p<0.05) apparent total tract digestibility (ATTD) of gross energy, dry matter and organic matter, and pigs fed MOA2 had increased (p<0.05) ATTD of neutral detergent fiber compared to CTR. Dietary MOA supplementation decreased (p<0.05) pH value, and improved (p<0.01) concentrations of lactic acid and total volatile fatty acids (TVFA) in ileum compared to CTR. Pigs fed MOA showed higher (p<0.05) concentration of acetic acid, and lower (p<0.05) content of formic acid in feces compared to CTR. Pigs fed MOA1 had increased (p<0.05) concentration of TVFA and butyric acid in feces. Pigs fed MOA1 showed higher concentration of Lactobacillus and lower concentration of Escherichia in feces compared to CTR. Conclusion: Dietary supplementation of MOA 1 or 2 could improve nutrients digestibility, TVFA concentration and intestinal flora in growing-finishing pigs fed high fiber diet.
Keywords
Growing-finishing Pigs; Microbiota; Nutrients Digestibility; Organic Acids; Volatile Fatty Acids; Wheat Bran;
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Times Cited By KSCI : 5  (Citation Analysis)
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