Effects of Inulin on Growth Performance, Nutrient Apparent Digestibilities and Antioxidant Capacity of Weaned Piglets

WANG Weikang; CHEN Daiwen; YU Bing; HUANG Zhiqing; MAO Xiangbing; ZHENG Ping; YU Jie; LUO Junqiu; LUO Yuheng; YAN Hui; HE Jun

doi:10.3969/j.issn.1006-267x.2021.02.017

Chinese Journal of Animal Nutrition >

2021 , Vol. 33 >Issue 2: 760 - 768

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.02.017

Effects of Inulin on Growth Performance, Nutrient Apparent Digestibilities and Antioxidant Capacity of Weaned Piglets

WANG Weikang ,
CHEN Daiwen ,
YU Bing ,
HUANG Zhiqing ,
MAO Xiangbing ,
ZHENG Ping ,
YU Jie ,
LUO Junqiu ,
LUO Yuheng ,
YAN Hui ,
HE Jun

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Key Laboratory of Animal Disease-Resistance and Nutrition of Sichuan Province, Key Laboratory of Animal Disease-Resistance and Nutrition of Ministry of Education, College of Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China

Received date: 2020-07-20

Online published: 2021-02-04

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Abstract

This experiment was conducted to investigate the effects of inulin on growth performance, nutrient apparent digestibilities and antioxidant capacity of weaned piglets. Thirty-two Duroc×Landrace×Yorkshire (DLY) weaned piglets with an average weight of (7.10±0.20) kg were randomly divided into 4 groups with 8 replicates in each group and 1 pig in each replicate. Pigs in the control group were fed a basal diet, and others in experimental groups were fed basal diets supplemented with 2.5, 5.0 and 10.0 g/kg inulin (equal replaced the corn in basal diet), respectively. The experiment lasted for 21 days. The results showed that compared with the control group: 1) dietary 2.5, 5.0 and 10.0 g/kg inulin had no significant effects on the average daily feed intake and average daily gain of weaned piglets (P>0.05), dietary 2.5, 5.0 and 10.0 g/kg inulin significantly increased the ash apparent digestibility of weaned piglets (P<0.05), and dietary 2.5 and 5.0 g/kg inulin significantly increased the crude protein apparent digestibility of weaned piglets (P<0.05). 2) Dietary 2.5 g/kg inulin significantly increased the serum total superoxide dismutase (T-SOD) activity (P<0.05); dietary 2.5, 5.0 and 10.0 g/kg inulin significantly decreased the liver malondialdehyde (MDA) content (P<0.05); dietary 2.5 and 5.0 g/kg inulin significantly increased the jejunum catalase (CAT) activity (P<0.05), dietary 2.5 and 5.0 g/kg inulin significantly decreased the ileum MDA content (P<0.05), and dietary 2.5 g/kg inulin significantly increased the duodenum CAT activity (P<0.05). 3) Dietary 2.5, 5.0 and 10.0 g/kg inulin significantly increased the mRNA relative expression level of nuclear factor-E2-related factor 2 (Nrf2) in liver (P<0.05), and dietary 5.0 and 10.0 g/kg inulin significantly increased the mRNA relative expression level of heme oxygenase-1 (HO-1) in liver (P<0.05). 4) Dietary 2.5, 5.0 and 10.0 g/kg inulin significantly increased the mRNA relative expression level of HO-1 in duodenum and mRNA relative expression level of Nrf2 in jejunum (P<0.05), dietary 2.5 and 5.0 g/kg inulin significantly increased the mRNA relative expression level of HO-1 and Nrf2 in ileum (P<0.05), dietary 2.5 g/kg inulin significantly increased the mRNA relative expression level of Kelch-like epichlorohydrin-associated protein 1 (Keap1) in jejunum (P<0.05), and dietary 10.0 g/kg inulin significantly increased the mRNA relative expression level of HO-1 and Keap1 in jejunum (P<0.05). In summary, dietary inulin has no significant effect on growth performance, but can improve nutrient apparent digestibilities and antioxidant capacity of weaned piglets. Under the condition of this experiment, the dietary suitable supplemental level of inulin for weaned piglets is 2.5 g/kg.

Key words： inulin; weaned piglets; nutrient apparent digestibilities; antioxidant

Cite this article

WANG Weikang , CHEN Daiwen , YU Bing , HUANG Zhiqing , MAO Xiangbing , ZHENG Ping , YU Jie , LUO Junqiu , LUO Yuheng , YAN Hui , HE Jun . Effects of Inulin on Growth Performance, Nutrient Apparent Digestibilities and Antioxidant Capacity of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2021 , 33(2) : 760 -768 . DOI: 10.3969/j.issn.1006-267x.2021.02.017

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