Effects of Dietary Hydrolyzed Tannic Acid on Growth Performance and Intestinal Health of Broilers

  • LI Junhui ,
  • XIE Yuhuai ,
  • ZHANG Shaotao ,
  • LI Min ,
  • LI Shiyin ,
  • XU Qingqing ,
  • ZHANG Xiaodong ,
  • ZHANG Chengxi ,
  • YANG Weiren
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  • 1. Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China;
    2. College of Animal Science and Technology, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China;
    3. Qingdao Runbiotech Biotechnology Co., Ltd., Qingdao 266324, China

Received date: 2020-10-24

  Online published: 2021-05-14

Supported by

 

Abstract

This experiment was conducted to study the effects of dietary hydrolyzed tannic acid on growth performance and intestinal health of broilers. A single factor completely randomized design was used to select 42 000 one-day-old healthy Arbor Acres (AA) broilers with similar body condition and randomly divided into 3 groups with 4 replicates per group and 3 500 broilers per replicate. The pre-test lasted for 10 days and the trial lasted for 32 days. Broilers in all groups were fed a basal diet without any antibiotics in pre-trial period. In trial period, broilers in control group were fed a basal diet, and the others in experimental groups were fed the basal diets supplemented with 200 and 400 mg/kg hydrolyzed tannic acid, respectively. The results showed as follows:compared with control group, 1) dietary hydrolytic tannic acid had no significant effects on final weight, average daily gain, average daily feed intake, mortality rate and European benefit index of broilers (P>0.05), but the ratio of feed to gain in 400 mg/kg hydrolyzed tannic acid group was significantly decreased (P<0.05); 2) dietary hydrolyzed tannic acid significantly decreased duodenal pH in of broilers (P<0.01), significantly increased duodenal and jejunal trypsin activity, villus height and the ratio of villus height to crypt depth (P<0.01), and significantly increased the number of cecal Lactobacillus (P<0.05); 3) ditary 400 mg/kg hydrolyzed tannic acid significantly increased the duodenal amylase activity of broilers (P<0.01), significantly increased jejunal amylase activity (P<0.05), and significantly decreased jejunal crypt depth (P<0.05); 4) dietary 200 mg/kg hydrolyzed tannic acid significantly increased jejunal lipase activity of broilers (P<0.05). In summary, dietary hydrolyzed tannic acid can reduce the ratio of feed to weight and mortality rate of broilers, increase European benefit index, intestinal digestive enzyme activity and the number of Lactobacillus, promote intestinal development and protect broiler intestinal health. Under this conditions, adding 400 mg/kg hydrolyzed tannic acid to broilers’ diets has the best effects.

Cite this article

LI Junhui , XIE Yuhuai , ZHANG Shaotao , LI Min , LI Shiyin , XU Qingqing , ZHANG Xiaodong , ZHANG Chengxi , YANG Weiren . Effects of Dietary Hydrolyzed Tannic Acid on Growth Performance and Intestinal Health of Broilers[J]. Chinese Journal of Animal Nutrition, 2021 , 33(5) : 2642 -2651 . DOI: 10.3969/j.issn.1006-267x.2021.05.024

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