饲料营养 Feed science and technology

饲粮中添加肠杆菌肽对断奶仔猪生产性能和血清生化指标的影响

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  • 1. 沈阳农业大学畜牧兽医学院, 沈阳 110866;
    2. 沈阳博睿农牧科技有限公司, 沈阳 110300
卜艳玲(1988-),女,辽宁营口人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:675214566@qq.com

收稿日期: 2017-08-27

  网络出版日期: 2018-02-02

基金资助

辽宁省科技厅重大项目"昌图瘦肉型猪选育及标准化健康养殖产业化示范基地"(2014215031);辽宁省科技厅重大项目"昌图瘦肉型猪选育及标准化健康养殖产业化示范基地"(2015103034)

Effects of Enterobacitracin Supplementation on Performance and Serum Biochemical Indices of Weaning Piglets

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  • 1. College of Animal Sciences and Veterinary Sciences, Shenyang Agricultural University, Shenyang 110866, China;
    2. Shenyang Borui Agriculture and Animal Husbandry Technology Co., Ltd., Shenyang 110300, China

Received date: 2017-08-27

  Online published: 2018-02-02

摘要

本试验旨在研究肠杆菌肽在断奶仔猪生产中的应用效果。选取144头28日龄且平均体重为(7.35±0.21)kg的健康"杜×长×大"三元杂交断奶仔猪,随机分为6组,每组4个重复,每个重复6头猪(公母各占1/2)。对照组仔猪饲喂基础饲粮,试验组仔猪饲喂在基础饲粮基础上分别添加硫酸黏菌素(30 g/t)、天蚕素抗菌肽(300 g/t)以及肠杆菌肽(300、400和500 g/t)的试验饲粮。试验期为28 d,分为试验前期(第1~14天)和试验后期(第15~28天)2个阶段。结果显示:1)试验前期、试验后期和整个试验期,400和500 g/t肠杆菌肽组的平均日增重(ADG)均显著高于对照组(P<0.05),料重比均显著低于对照组(P<0.05)。试验第7、14和28天时,各试验组腹泻率均极显著低于对照组(P<0.01),其中以500 g/t肠杆菌肽组最低。2)试验第14天时,500 g/t肠杆菌肽组血清尿素氮(UN)含量显著低于对照组和30 g/t硫酸黏菌素组(P<0.05);试验第28天时,400和500 g/t肠杆菌肽组血清UN含量显著低于对照组(P<0.05),且500 g/t肠杆菌肽组还显著低于30 g/t硫酸黏菌素组(P<0.05)。试验第14和28天时,400和500 g/t肠杆菌肽组血清球蛋白(GLB)含量显著高于对照组(P<0.05)。3)试验第14和28天时,500 g/t肠杆菌肽组血清免疫球蛋白G(IgG)含量较对照组分别高出17.27%(P<0.05)、16.20%(P<0.05)。试验第14天时,各抗菌肽组血清补体4(C4)含量均显著高于对照组和30 g/t硫酸黏菌素组(P<0.05)。4)试验第14和28天时,各抗菌肽组血清丙二醛(MDA)含量极显著低于对照组和30 g/t硫酸黏菌素组(P<0.01)。试验第28天时,500 g/t肠杆菌肽组血清超氧化物歧化酶(SOD)活性和总抗氧化能力(T-AOC)显著高于对照组和30 g/t硫酸黏菌素组(P<0.05)。综上所述,肠杆菌肽在提高断奶仔猪生产性能、免疫性能和抗氧化能力方面优于天蚕素抗菌肽,也优于抗生素硫酸黏菌素,饲粮中肠杆菌肽的适宜添加量为500 g/t。

本文引用格式

卜艳玲, 陈静, 李建涛, 程奇, 李海东, 刘显军 . 饲粮中添加肠杆菌肽对断奶仔猪生产性能和血清生化指标的影响[J]. 动物营养学报, 2018 , 30(2) : 696 -706 . DOI: 10.3969/j.issn.1006-267x.2018.02.035

Abstract

This experiment was designed to study the application effect of enterobacitracin in the production of weaning piglets. One hundred and forty-four healthy piglets (Duroc×Landrace×Large White) at the age of 28 days and with the average body weight of (7.35±0.29) kg were randomly selected and allotted to six groups with four replicates of six piglets per replicate (3 males and 3 females). Piglets in control group were fed a basal diet, and piglets in experimental groups were fed experimental diets supplemented with colistin sulfate (30 g/t), cecropin (300 g/t) and enterobacitracin (300, 400 and 500 g/t), respectively. The test lasted for 28 days, including early period (day 1 to 14) and later period (day 15 to 28). The results showed as follows:1) compared with control group, the average daily gain (ADG) of 400 and 500 g/t enterobacitracin groups was significantly increased (P<0.05), and the feed to gain ratio (F/G) was significantly decreased (P<0.05). At the 7th, 14th and 28th day, the diarrhea rate of experimental groups was significantly lower than that of control group (P<0.01), and the 500 g/t enterobacitracin group had the lowest value. 2) The serum urea nitrogen (UN) content of 500 g/t enterobacitracin group was significantly lower than that of control group and 30 g/t colistin sulfate group at the 14th day (P<0.05), and the serum UN content of 400 and 500 g/t enterobacitracin groups was significantly lower than that of control group at the 28th day (P<0.05); moreover, the serum UN content of 500 g/t enterobacitracin group was significantly lower than that of 30 g/t colistin sulfate group at the 28th day (P<0.05). At the 14th and 28th day, the serum globulin (GLB) content of 400 and 500 g/t enterobacitracin groups was significantly higher than that of control group (P<0.05). 3) The serum immunoglobulin G (IgG) content of 500 g/t enterobacitracin group was increased by 13.63% (P<0.05) and 13.63% (P<0.05) compared with control group, respectively. The serum complement 4 (C4) content of antimicrobial peptide groups was significantly higher than that of control group and 30 g/t colistin sulfate group at the 14th day (P<0.05). 4) At the 14th and 28th day, the serum (MDA) content of antimicrobial peptide groups was significantly lower than that of control group and 30 g/t colistin sulfate group (P<0.01). At the 28th day, the serum superoxide dismutase (SOD) activity and total antioxidant capacity (T-AOC) were significantly higher than those of control group and 30 g/t colistin sulfate group (P<0.05). In conclusion, enterobacitracin is superior to cecropin in improving performance,immune function and antioxidant capacity of weanling piglets, and also superior to the antibiotic of colistin sulfate, which is suitable for 500 g/t in the diet.

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