畜牧兽医学报 ›› 2017, Vol. 48 ›› Issue (8): 1481-1490.doi: 10.11843/j.issn.0366-6964.2017.08.012

• 营养与饲料 • 上一篇    下一篇

日粮中添加酿酒葡萄渣对绵羊肉品质及肌肉抗氧化性的影响

赵俊星, 刘向东, 金亚倩, 刘文忠, 任有蛇, 张春香, 张建新*   

  1. 山西农业大学动物科技学院, 太谷 030801
  • 收稿日期:2016-11-01 出版日期:2017-08-23 发布日期:2017-08-12
  • 通讯作者: 张建新,教授,博士生导师,主要从事饲料资源开发与利用研究,E-mail:ypzjx@126.com
  • 作者简介:赵俊星(1982-),男,山西太谷人,博士,主要从事动物遗传育种研究,E-mail:junxzh@163.com
  • 基金资助:

    国家现代肉羊产业技术体系专项(CARS-39);山西省重点研发项目(201603D221026-1);山西省协同创新项目

Effect of Dietary Wine Grape Pomace Supplementation on the Antioxidant Ability and Meat Quality of Lambs

ZHAO Jun-xing, LIU Xiang-dong, JIN Ya-qian, LIU Wen-zhong, REN You-she, ZHANG Chun-xiang, ZHANG Jian-xin*   

  1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
  • Received:2016-11-01 Online:2017-08-23 Published:2017-08-12

摘要:

旨在研究日粮中添加酿酒葡萄渣对舍饲公羔肌肉抗氧化性及肉品质的影响。选取24只杜泊×小尾寒羊杂交公羔(5月龄,(25±1)kg),采用完全随机设计平均分为4组,其中1组允许自由活动,剩余3组单栏饲养。自由活动组公羔饲喂基础日粮,单栏饲养组公羔分别饲喂含有不同WGP添加量(0%、5%、10%,DM)的日粮。试验结束后,屠宰并取样,测定肉质相关指标与肌肉抗氧化酶活性及表达。结果显示:1)单栏饲养方式极显著增加了羔羊背最长肌中活性氧自由基(ROS,P<0.01),显著提高了丙二醛浓度(MDA,P<0.05)。日粮中添加WGP可显著降低二者水平(P<0.05)。2)日粮中添加WGP对羊肉pH、肉色、蒸煮损失、肌内脂肪含量影响均不显著,但可显著降低背最长肌剪切力(P<0.05)与胶原蛋白含量(P<0.05)。3)日粮中添加10% WGP可显著提高T-AOC与GPx4活性(P<0.05),而5%与10%的WGP添加量可显著提高SOD活性(P<0.05),但对catalase活性影响不显著。日粮中添加WGP不改变SOD与catalase表达,但可显著提高Nrf2的mRNA与蛋白质表达丰度(P<0.05)。WGP添加后不影响GPx4的mRNA表达,但5% WGP可显著提高其蛋白质含量(P<0.05)。结果表明,日粮中添加10%酿酒葡萄皮渣可提高单栏饲养方式下肉羊骨骼肌抗氧化性,减缓氧化应激,并提高羊肉品质。

关键词: 葡萄皮渣, 氧化应激, 肉品质, 抗氧化, 羔羊

Abstract:

The objective of this study was to investigate the effect of dietary wine grape pomace(WGP) supplementation on meat quality and antioxidative capacity in longissimus dorsi(LD)muscle of ram lambs under pen raising condition. Twenty-four Dorper×Small thin-tailed crossed ram lambs(5 month old, (25±1) kg) were randomly selected and equally divided into 4 groups. Six lambs were raised under free-range conditions and fed with basal diet, the other eighteen lambs were housed in individual and received 3 levels of WGP supplementation(0%, 5% and 10%, air-dry matter basis). At the end of experiment, all animals were slaughtered and sampled for meat quality and antioxidative capacity determination. The results showed that:1) Concentration of reactive oxygen species(ROS, P<0.01) and malondialdehyde(MDA, P<0.05) in LD muscle were elevated when lambs were raised under penned condition; Dietary WGP supplementation effectively reduced their concentration(P<0.05). 2) The effect of dietary WGP supplementation on pH, color, cooking loss and intramuscular fat(IMF)content were not significant. The Warner-Bratzler shear force was decreased when lambs were fed with WGP supplementation diet(P<0.05); Meanwhile, the collagen content decreased(P<0.05). 3) Total antioxidative capacity(T-AOC) and glutathione peroxidase 4(GPx4) activity increased when lambs were fed with 10% WGP supplementation diet(P<0.05), while both 5% and 10% dietary WGP supplementation increased superoxide dismutase(SOD) activity(P<0.05), and had no significant effect on catalase activity. WGP supplementation did not alter both SOD and catalase expression at both mRNA and protein levels, while the mRNA and protein contents of Nrf2 were elevated (P<0.05). Although mRNA abundance was not altered, 5% WGP supplementation increased GPx4 protein expression(P<0.05). Dietary 10% WGP supplementation can be used as a feed ingredient in lamb production to relieve oxidative stress, improve antioxidant capacity and meat quality.

Key words: wine grape pomace, oxidative stress, meat quality, antioxidation, lambs

中图分类号: