Effects of Gallnut Tannic Acid on Growth Performance, Diarrhea and Nutrient Digestion in Weaned Piglets

GOU Changyong; SHI Xiaoli; SUN Chenghui; SHI Jing; LUO Zhijun; LIU Li; LI Dengfu; PENG Shan

doi:10.3969/j.issn.1006-267x.2020.11.019

Chinese Journal of Animal Nutrition >

2020 , Vol. 32 >Issue 11: 5137 - 5144

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.11.019

Effects of Gallnut Tannic Acid on Growth Performance, Diarrhea and Nutrient Digestion in Weaned Piglets

GOU Changyong ,
SHI Xiaoli ,
SUN Chenghui ,
SHI Jing ,
LUO Zhijun ,
LIU Li ,
LI Dengfu ,
PENG Shan

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1. College of Animal Science, Guizhou University, Guiyang 550025, China;
2. Gallochem Co., Ltd., Xiuwen 550200, China;
3. Agricultural and Rural Bureau of Guiyang, Guiyang 550081, China

Received date: 2020-04-27

Online published: 2020-11-16

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Abstract

This study was aimed to investigate the effects of Gallnut tannic acid (GTA) on growth performance, diarrhea, nutrient digestion and enzyme activity in weaned piglets. One hundred and fifty (Duroc×Landrace×Yorkshire) 24-day-old weaned piglets with body weight of (7.07±0.06) kg were randomly divided into 5 groups with 5 replicates in each group and 6 piglets per replicate. Piglets in the control group were fed a basal diet, and piglets in groups Ⅰ, Ⅱ, Ⅲ and Ⅳ were fed the basal diet supplemented with antibiotics (0.7 mg/kg aureomycin and 0.22 mg/kg enramycin) and 700, 1 200 and 1 700 mg/kg GTA, respectively. The pre-feeding period lasted for 4 d followed by an experimental period of 28 d. The results showed as follows: 1) the average daily gain (ADG) in groups Ⅰ and Ⅳ was significantly higher than that in control group, groups Ⅱ and Ⅲ (P<0.05). There was no significant difference in ADG between group Ⅰ and group Ⅳ (P>0.05), and there was no significant difference between control group and groups Ⅱ and Ⅲ (P>0.05). The experiment also showed that the addition of antibiotics and GTA had a tendency to promote average daily feed intake of piglets (P=0.055). 2) Compared with control group and group Ⅰ, GTA supplementation significantly decreased diarrhea rate, diarrhea index and fecal moisture content with the increase of GTA supplementation (P<0.05). 3) Compared with control group and group Ⅰ, the apparent digestibilities of dry matter, gross energy, crude protein, crude fat and phosphorus in groups Ⅱ, Ⅲ and Ⅳ had no significant difference (P>0.05). The addition of GTA tended to promote the apparent digestibility of calcium (P=0.070), and the apparent digestibility reached the maximum when supplementation was 1 200 mg/kg. 4) Compared with the control group and group Ⅰ, the duodenal trypsin activity was significantly enhanced by adding GTA (P<0.05), and there were no significant difference in duodenal α-amylase (α-AMS) and lipase (LPS) activities, jejunum and ileum trypsin α-AMS and LPS activities (P>0.05). In conclusion, adding GTA can increase feed intake, alleviate diarrhea, improve duodenal trypsin activity, and cannot impact nutrient digestion. The optimal supplementation level of GTA is 1 700 mg/kg.

Key words： Gallnut tannins acid; weaned piglets; growth performance; diarrhea; apparent digestibility

Cite this article

GOU Changyong , SHI Xiaoli , SUN Chenghui , SHI Jing , LUO Zhijun , LIU Li , LI Dengfu , PENG Shan . Effects of Gallnut Tannic Acid on Growth Performance, Diarrhea and Nutrient Digestion in Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2020 , 32(11) : 5137 -5144 . DOI: 10.3969/j.issn.1006-267x.2020.11.019

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