Effects of Xylo-Oligosaccharides from Poplar on Growth Performance, Intestinal Digestive Enzyme Activity and Short-Chain Fatty Acid Content and Serum Hormone Levels of Broilers

LI Shuzhen; LIU Jiao; CHEN Zhimin; ZHENG Aijuan; LIU Guohua; CAI Huiyi; XU Yong; CHANG Wenhuan

doi:10.3969/j.issn.1006-267x.2021.02.024

2021 , Vol. 33 >Issue 2: 832 - 840

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.02.024

Effects of Xylo-Oligosaccharides from Poplar on Growth Performance, Intestinal Digestive Enzyme Activity and Short-Chain Fatty Acid Content and Serum Hormone Levels of Broilers

LI Shuzhen ,
LIU Jiao ,
CHEN Zhimin ,
ZHENG Aijuan ,
LIU Guohua ,
CAI Huiyi ,
XU Yong ,
CHANG Wenhuan

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1. Key Laboratory of Feed Biotechnology of Agricultural Ministry, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China

Received date: 2020-07-01

Online published: 2021-02-04

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Abstract

This study was to identify the effects of xylo-oligosaccharides (XOS) from poplar sawdust by acetic acid catalysis method on growth performance, intestinal digestive enzyme activity and short-chain fatty acid (SCFA) content and serum hormone levels of broilers, and investigate its growth-promoting mechanism, thus to provide theoretical basis for the application of acetic acid catalysis method to produce the XOS. One hundred and twenty 1-day-old male Arbor Acres broilers were randomly divided into 2 groups (control group and XOS group) with 6 replicates in each group and 10 birds in each replicate. The diets consisted of a basal diet for the control group and an experimental diet supplemented with 0.02% XOS to replace the zeolite in the basal diet with equal proportion for the XOS group. The trial lasted for 42 days. The results showed as follows: 1) compared with the control group, dietary XOS significantly increased the body weight of broilers at 42 days of age and the average daily gain of broilers from 22 to 42 and 1 to 42 days of age (P<0.05), significantly decreased the feed to gain ratio (P<0.05), but had no significant effects on the average daily feed intake (P>0.05). 2) Compared with the control group, dietary XOS significantly enhanced the lipase activity in duodenum of broilers (P<0.05), tended to increase the protease activity in duodenum (P=0.056), but had no significant effects on the activities of lipase and protease in jejunum, ileum and cecum (P>0.05). 3) Compared with the control group, dietary XOS had no significant effects on SCFA content in cecum of broilers (P>0.05). 4) Compared with the control group, dietary XOS significantly increased the serum contents of growth hormone and triiodothyronine (T₃) of broilers (P<0.05), significantly decreased the serum thyroxine (T₄) content (P<0.05), and significantly decreased the T₄ to T₃ ratio (P<0.05). In conclusion, XOS can improve the growth performance of broilers by enhancing the digestive enzyme activity, promoting the levels of hormones related to growth and then increasing the nutrient availability.

Key words： broilers; xylo-oligosaccharides; digestive enzyme; short-chain fatty acids; hormone levels

Cite this article

LI Shuzhen , LIU Jiao , CHEN Zhimin , ZHENG Aijuan , LIU Guohua , CAI Huiyi , XU Yong , CHANG Wenhuan . Effects of Xylo-Oligosaccharides from Poplar on Growth Performance, Intestinal Digestive Enzyme Activity and Short-Chain Fatty Acid Content and Serum Hormone Levels of Broilers[J]. Chinese Journal of Animal Nutrition, 2021 , 33(2) : 832 -840 . DOI: 10.3969/j.issn.1006-267x.2021.02.024

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