Effects of Dietary Active Dry Yeast on Growth Performance, Nutrient Apparent Digestibilities and Serum Immune Indexes of Weaned Piglets

  • WANG Duo ,
  • LIANG Guangzhe ,
  • ZHANG Xiaoyan ,
  • ZHANG Yijian ,
  • LUO Shiqian ,
  • LIANG Mingzhen
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  • 1. College of Animal Science and Technology, Guangxi University, Nanning 530004, China;
    2. Guangxi Yikunqi Feed Limited Company, Nanning 530001, China

Received date: 2020-09-30

  Online published: 2021-05-14

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Abstract

This experiment was conducted to evaluate the effects of dietary active dry yeast on growth performance, nutrient apparent digestibilities and serum immune indexes of weaned piglets. A total of 330 healthy weaned piglets (Duroc×Landrace×Yorkshire) with a body weight of (8.2±0.3) kg at 35 days of age were selected and divided into 5 groups with 3 replicates in each group and 22 piglets in each replicate (half male and half female). The control group was fed a basic diet. In test groups 1 and 2, 1 and 2 g/kg of active dry leavening yeast were added respectively, while in test groups 3 and 4, 0.5 and 1.0 g/kg of Brady active dry yeast were added respectively. The pre-experimental period lasted for 7 days, and the experimental period lasted for 30 days. The results showed as follows:1) compared with the control group, the average daily feed intake and average daily gain of weaned piglets in the test groups were significantly increased (P<0.01), and the diarrhea rate in the test groups 1 and 3 were significantly reduced by 1.45% and 1.44% (P<0.05). 2)Compared with the control group, the nutrient apparent digestibilities of each test group were improved (P>0.05). 3) Compared with the control group, serum immunoglobulin M content in test groups 1 and 3 was significantly increased by 26% and 34% (P<0.05), respectively. In summary, under the conditions of this experiment, when 1 g/kg active dry leavening yeast and 0.5 g/kg Brady active dry yeast are added to the diet, it can reduce the diarrhea rate of weaned piglets, the growth performance and immune ability of weaned piglets can be improved. The apparent digestibility of nutrients is improved, but the effect is not significant.

Cite this article

WANG Duo , LIANG Guangzhe , ZHANG Xiaoyan , ZHANG Yijian , LUO Shiqian , LIANG Mingzhen . Effects of Dietary Active Dry Yeast on Growth Performance, Nutrient Apparent Digestibilities and Serum Immune Indexes of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2021 , 33(5) : 2949 -2956 . DOI: 10.3969/j.issn.1006-267x.2021.05.052

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