Molecular Nutrition

Effects of Yucca schidigera Extract on Growth Performance, Serum Antioxidant and Immune Indexes, Fecal Nitrogen and Phosphorus Emission and Microorganism Number of Weaner Piglets

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  • 1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
    2. Animal Husbandry and Veterinary Station of Penglai Nanwang Sub-District, Yantai 265600, China

Received date: 2017-02-12

  Online published: 2017-08-02

Abstract

The objective of this experiment was to study the effects of Yucca schidigera extract on growth performance, serum antioxidant and immune indexes, fecal nitrogen and phosphorus emission and microorganism number of weaner piglets, and to found the optimal supplemental level of Yucca schidigera extract for piglets. A total of 120 twenty-eight-day-old weaner piglets (Duroc×Landrace×Large) with the body weight of (8.00±0.46) kg were randomly divided into 5 groups with 4 replicates per group and 6 piglets per replicate. The control group (group Ⅰ) was fed a basal diet, and the groups Ⅱ to Ⅴ were fed the basal diet supplemented with 90, 120, 150 and 180 mg/kg Yucca schidigera extract, respectively. The experiment lasted for 28 days. The results showed as follows: 1) compared with the control group, the average daily gain (ADG) and average daily feed intake (ADFI) of group Ⅲ were significantly increased (P<0.01), the feed to gain ratio (F/G) of group Ⅲ was significantly decreased (P<0.05), and the diarrhea rate of groups Ⅲ, Ⅳ and Ⅴ was significantly decreased (P<0.05 or P<0.01). 2) Compared with the control group, the catalase (CAT), superoxide dismutase (SOD) activities and total antioxidant capacity (T-AOC) in serum of group Ⅲ were significantly increased (P<0.05). There was no significant difference on glutathione peroxidase (GSH-Px) activity and malondialdehyde (MDA) content in serum among all groups (P>0.05). 3) Compared with the control group, the serum nitric oxide (NO) content of group Ⅲ was significantly increased (P<0.05), and the serum nitric oxide synthase (NOS) and inducible nitric oxide synthase in plasma (iNOS) activities of group Ⅲ were significantly increased (P<0.01), the serum immunoglobulin G content of groups Ⅲ, Ⅳ and Ⅴ was significantly increased (P<0.05). 4) Compared with the control group, the thymus index of group Ⅲ was significantly increased (P<0.05). There was no significant difference on spleen index among all groups (P>0.05). 5) Compared with the control group, the fecal total nitrogen content of group Ⅳ was significantly decreased (P<0.05), the fecal ammonia nitrogen content of groups Ⅱ, Ⅲ and Ⅳ was significantly decreased (P<0.05). There was no significant difference on fecal total phosphorus content among all groups (P>0.05). 6) Compared with the control group, the fecal Escherichia coli number of groups Ⅲ and Ⅳ was significantly decreased (P<0.05). There were no significant difference on fecal total aerobic bacteria and Lactobacillus number among all groups (P>0.05). In conclusion, under this experiment condition, the dietary optimal supplemental level of Yucca schidigera extract for piglets is 120 mg/kg.

Cite this article

HE Beibei, JIANG Jianyang, YU Guanghui, ZHAO Weiyong, SUN Pengpeng, SONG Chunyang . Effects of Yucca schidigera Extract on Growth Performance, Serum Antioxidant and Immune Indexes, Fecal Nitrogen and Phosphorus Emission and Microorganism Number of Weaner Piglets[J]. Chinese Journal of Animal Nutrition, 2017 , 29(8) : 2791 -2799 . DOI: 10.3969/j.issn.1006-267x.2017.08.023

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