Effects of Aging Maize and Glutathione Yeast on Growth Performance, Nutrient Apparent Digestibility, Serum Antioxidant and Immune Indices of Weaning Piglets

LUO Bin, LE Keming, CHEN Daiwen, MAO Xiangbing, ZHENG Ping, YU Jie, HE Jun, LUO Yuheng, LUO Junqiu, HUANG Zhiqing, YU Bing

doi:10.3969/j.issn.1006-267x.2019.04.014

2019 , Vol. 31 >Issue 4: 1574 - 1584

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.04.014

Molecular Nutrition

Effects of Aging Maize and Glutathione Yeast on Growth Performance, Nutrient Apparent Digestibility, Serum Antioxidant and Immune Indices of Weaning Piglets

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Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2018-09-04

Online published: 2019-04-16

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Abstract

The aim of the present study was to investigate the effects of aging maize on growth performance, nutrient apparent digestibility, serum antioxidant and immune indices of weaning piglets and the improvement effect of glutathione yeast supplementation on the above indices. Twenty-eight healthy Duroc×Landrace×Yorkshire weaned piglets at the age of (25±1) days were randomly divided into four groups, including control group (basal diet), glutathione yeast group (basal diet+0.5% glutathione yeast), aging maize group (the normal maize in the basal diet was all replaced by aging maize) and aging maize+glutathione yeast group (aging maize diet+0.5% glutathione yeast), respectively. Each group consisted of seven replicates with one piglet per replicate, and the piglet were feed separately. The trial lasted for 42 days. The results showed as follows:1) aging maize and glutathione yeast had no significant effects on average daily gain (ADG) and average daily feed intake (ADFI) of weaning piglets at each stage (P>0.05). Compared with control group, the ratio of feed to gain (F/G) on days 1 to 14, days 14 to 28, days 1 to 28 and days 1 to 42 in aging maize group were significantly decreased (P<0.05); glutathione yeast supplementation tended to decrease the F/G on days 1 to 28 (P=0.091). 2) Compared with control group, the apparent digestibility of dry matter, ash, organic matter and crude protein in aging maize group were significantly increased (P<0.05); glutathione yeast supplementation tended to increase the apparent digestibility of crude protein (P=0.066); the interaction between aging maize and glutathione yeast had a tendency to influence the apparent digestibility of crude fat (P=0.083). 3) Compared with control group, the serum malondialdehyde (MDA) content in aging maize group was significantly increased (P<0.05), but the serum total antioxidant capacity (T-AOC), and the activities of glutathion peroxidase (GSH-Px), catalase (CAT) and total superoxide dismutase (T-SOD) had no significant differences (P>0.05); glutathione yeast supplementation significantly decreased serum MDA content (P<0.05), significantly increased serum T-SOD activity (P<0.05), and tended to increase the serum GSH-Px activity (P=0.083). 4) Compared with normal maize, aging maize tended to increase serum urea nitrogen (UN) content (P=0.050); glutathione yeast supplementation tended to decrease serum total cholesterol (T-CHO) (P=0.096) and triglyceride (TG) contents (P=0.086). 5) Compared with normal maize, aging maize significantly decreased serum lysozyme (LZM) activity (P<0.05); glutathione yeast supplementation significantly increased serum complement 3 (C3) content (P<0.05), and tended to increase serum LZM activity (P=0.099). Under this experimental condition, compares with normal maize, aging maize can significantly decrease F/G, and can significantly increase the apparent digestibility of dry matter, ash, organic matter and crude protein, meanwhile, it can reduce serum antioxidant capacity and immune function. Dietary glutathione yeast supplementation can alleviate the negative effects of aging maize to a certain extent.

Key words： aging maize; glutathione yeast; weaning piglets; antioxidant capacity; immune function

Cite this article

LUO Bin, LE Keming, CHEN Daiwen, MAO Xiangbing, ZHENG Ping, YU Jie, HE Jun, LUO Yuheng, LUO Junqiu, HUANG Zhiqing, YU Bing . Effects of Aging Maize and Glutathione Yeast on Growth Performance, Nutrient Apparent Digestibility, Serum Antioxidant and Immune Indices of Weaning Piglets[J]. Chinese Journal of Animal Nutrition, 2019 , 31(4) : 1574 -1584 . DOI: 10.3969/j.issn.1006-267x.2019.04.014

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