乳酸菌发酵饲料对猪生长性能、肉品质和血液抗氧化指标的影响

摘要

本文旨在研究乳酸菌固态发酵饲料对生长育肥猪生长性能、肉品质和血液抗氧化能力的影响.试验选择体重和日龄相近的杜×长×大三元杂交生长育肥猪48头,随机分为对照组和试验组,每组6个重复,每个重复4头猪.对照组饲喂基础饲粮,试验组饲喂经乳酸菌发酵的基础饲粮.试验结果表明,乳酸菌发酵饲粮对生长期猪的生长性能无显著影响(P＞0.05).乳酸菌发酵饲粮显著增加了育肥猪的平均日增重,降低了料肉比(P＜0.05),但对平均日采食量无显著影响(P＞0.05).乳酸菌发酵饲粮显著提高了生长育肥猪血液的超氧化物歧化酶、过氧化氢酶、谷胱甘肽过氧化物酶活性和抗氧化能力,显著降低血液丙二醛含量(P＜0.05).乳酸菌发酵饲粮显著提高了生长育肥猪肉的亮度和红度(P＜0.05),改善猪肉颜色,降低了猪肉剪切力(P＜0.05),对pH无显著影响(P＞0.05),改善了肉质.因此,养猪生产实践中,可以给生长育肥猪饲喂乳酸菌固态发酵饲料,提高生长性能,改善猪肉品质.%This experiment was conducted to study the effects of Lactobacillus fermentation of solid feed on the growth performance,meat quality and blood antioxidant capacity of growing and finishing pigs.48 pigs with similar body weight and age were selected and were randomly divided into control group and experimental group.Each group had 6 replicates,with 4 pigs in each replicate.The control group was fed basal diet while the experimental group fed the basic diet fermented by lactic acid bacteria.The results showed that Lactobacillus fermented diets had no significant effect on the growth performance of growing pigs(P＞0.05).Lactobacillus fermented diets significantly increased average daily gain and reduced feed to meat ratio of fattening pigs(P＜0.05),but had no significant effect on average daily feed intake(P＞0.05).The fermentation of lactic acid bacteria significantly increased the activity of superoxide dismutase,catalase and glutathione peroxidase in the blood of growing fattening pigs(P＜0.05),reduced the content of malondialdehyde in blood and increased the antioxidant capacity of blood(P＜0.05).The fermentation of lactic acid bacteria significantly improved the brightness and redness of the growing fattened pork,improved the pork color,reduced the pork shearing force,and had no significant effect on pH,and improved the meat quality.Therefore,in the practice of pig production,the feed of solid state fermented lactobacillus can be fed to growing and finishing pigs,which can improve the growth performance and improve the quality of pork.