Molecular Nutrition

Effects of Montmorillonite and Yeast Culture Complex on Growth Performance, Serum Biochemical Indexes, Immunity Function and Antioxidant Capacity of Weaned Piglets

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  • 1. College of Animal Secience and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. Amlan International, Chicagao 60611, USA;
    3. Hunan Baiyi Feed Technology Co., Ltd., Liuyang 410300, China

Received date: 2018-03-14

  Online published: 2018-09-20

Abstract

The study was conducted to investigate the effects of dietary montmorillonite and yeast culture complex replaced antibiotics (AB) and zinc oxide (ZnO) on growth performance, serum biochemical indexes, immunity function and antioxidant capacity of weaned piglets. One hundred and eighty 31-day-old "Duroc×Langdrance×Largewhite" weaned piglets with average body weight of (6.78±0.19) kg were randomly assigned to 5 groups with 6 replicates per group and 6 piglets per replicate (males and female in half). Piglets in control group were fed the basal diets supplemented with AB (500 g/t 15% chlortetracycline and 200 g/t 50% olaquindox) and ZnO (3 kg/t), and the others in experimental groups Ⅰ, Ⅱ, Ⅲ and Ⅳ were fed the basal diets supplemented with AB, ZnO and montmorillonite and yeast culture complex (1.5 kg/t), ZnO and montmorillonite and yeast culture complex, AB and montmorillonite and yeast culture complex, montmorillonite and yeast culture complex, respectively. The experiment lasted for 35 days. The results showed as follows:1) average daily feed intake (ADFI) of weaned piglets in experimental groups Ⅲ and Ⅳ was significantly higher than that in control group and experimental group Ⅰ at 15 to 35 days (P<0.05), and average daily gain (ADG) in experimental groups Ⅱ, Ⅲ and Ⅳ was significantly higher than that in control group at 15 to 35 days and 1 to 35 days (P<0.05). 2) Compared with control group, at 14 and 35 days, alkaline phosphatase (ALP) activity in serum of weaned piglets in experimental groups Ⅲ and Ⅳ was significantly decreased (P<0.05), and alanine aminotransferase (ALT) activity in serum in experimental groups Ⅱ, Ⅲ and Ⅳ was significantly decreased (P<0.05). There were no significant differences in the contents of total protein (TP), albumin (ALB) and urea nitrogen (UN) and aspartate aminotransferase (AST) activity in serum in all groups (P>0.05). 3)Compared with control group, at 14 days, the contents of immunoglobulin A (IgA), tumor necrosis factor-α (TNF-α) and interferon-γ (INF-γ) in serum of weaned piglets in all experimental groups were significantly increased (P<0.05), the contents of immunoglobulin M (IgM) and interleukin-4 (IL-4) in serum in experimental groups Ⅱ and Ⅲ were significantly increased (P<0.05), and the contents of interleukins-1β (IL-1β), interleukins-2 (IL-2) and interleukins-6 (IL-6) in serum in experimental group Ⅰ were significantly increased (P<0.05). At 35 days, the contents of IgG and TNF-α in serum in all experimental groups were significantly increased (P<0.05), IgM content in serum in experimental groups Ⅰ and Ⅳ was significantly increased (P<0.05), and the contents of INF-γ and IL-6 in serum in experimental groups Ⅰ, Ⅱ and Ⅲ were significantly increased (P<0.05). 4) Compared with control group, at 14 days, total antioxidant capacity (T-AOC) in serum of weaned piglets in experimental groups Ⅱ and Ⅲ was significantly increased (P<0.05), and the activities of glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) in serum in all experimental groups were significantly increased (P<0.05). At 35 days, T-AOC in serum in experimental groups Ⅲ and Ⅳ was significantly increased (P<0.05), SOD activity in serum in experimental group Ⅲ was significantly increased (P<0.05), and malondialdehyde (MDA) content in serum in all experimental groups was significantly decreased (P<0.05). It can be seen that diets supplemented with montmorillonite and yeast culture complex can improve growth performance, immune function and antioxidant capacity of weaned piglet.

Cite this article

TANG Xiaoyi, MA Jie, ZHANG Fuqun, CHEN Qinghua, JI Fang, CHEN Wenbin, WANG Bing . Effects of Montmorillonite and Yeast Culture Complex on Growth Performance, Serum Biochemical Indexes, Immunity Function and Antioxidant Capacity of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2018 , 30(9) : 3670 -3680 . DOI: 10.3969/j.issn.1006-267x.2018.09.038

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