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饲喂香蕉茎叶和玉米秸秆青贮料对杜湖羊肉品质和营养成分的影响

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以杜湖杂交羊为研究对象,比较分析饲喂香蕉茎叶和玉米秸秆青贮饲料之后背最长肌的肉品质、氨基酸、脂肪酸含量差异.选取7月龄杜湖杂交羊16只,随机分为2组(每组8只):对照组饲喂玉米秸秆青贮饲料,试验组饲喂香蕉茎叶青贮饲料,其他饲养模式及喂料两组完全相同,预饲期7d,试验期100 d.结果显示:试验组羊肉的pH、系水力、熟肉率和肉的亮度及黄度均高于对照组;两组羊肉中的干物质、粗蛋白、粗脂肪和粗灰分的含量无显著差异(P>0.05);试验组羊肉的氨基酸总量、必需氨基酸、鲜味氨基酸及必需氨基酸和鲜味氨基酸分别占氨基酸总量比率均高于对照组,但是差异不显著(P>0.05);试验组羊肉的脂肪酸含量显著低于对照组(P<0.05),饱和脂肪酸和不饱和脂肪酸含量均低于对照组,但差异不显著(P>0.05).结果表明,饲喂香蕉茎叶青贮饲料对羊肉肉品质、氨基酸、脂肪酸等无明显影响,可以替代玉米秸秆青贮饲料.
Effects of Feeding Banana Stems and Leaves and Corn Stalk Silage on Meat Quality and Nutritive Value of Dorper and Hu Crossbred Sheep
The aim of the present study was to investigate the difference in meat quality traits and the contents of amino acids,fatty acids of longissimus dorsi muscle between Dorper and Hu crossbred sheep fed with banana stems and leaves silage and corn stalk silage.Sixteen Dorper and Hu crossbred sheep with similar body weight were randomly divided into two groups (experiment group and control group),and each group had eight replicates.There was no difference in dietary composition except the silage:experiment group fed banana leaf and stem silage and control group fed corn stalk silage.The experiment was 7 days for adaptation and 100 days for trial period.The results showed that longissimus dorsi muscle from experimental group had a higher mutton pH value,water holding capacity,cooked meat rate,meat colour and yellowness than that of control group.There were no significant difference in the content of dry matter,crude protein,crude fat and crude ash(P>0.05).Meat in experimental group showed higher contents of total amino acid,essential amino acids,flavor amino acids and both of the amino acids in total amino acids ratio than that of the control,but not significantly (P>0.05).Plus,significantly lower contents of fatty acids (P<0.05) and insignificantly lower saturated fatty acids and polyunsaturated fatty acids were also observed in the meat of experimental group (P>0.05).These results indicate that feeding banana stems and leaves silage has no significant effect in meat quality traits and the contents of amino acids,fatty acids,therefore,corn stalk silage can be replaced by banana stems and leaves silage as a conventional silage.

Dorper and Hu crossbred sheepmeat qualityamino acidfatty acid

李志春、孙健、游向荣、张雅媛

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广西壮族自治区农业科学院农产品加工研究所,广西南宁530007

广西果蔬贮藏与加工新技术重点实验室,广西南宁530007

杜湖杂交羊 肉质品质 氨基酸 脂肪酸

广西科学研究与技术开发计划项目广西农业科学院科技发展基金广西农业科学院科技成果转化项目南宁市西乡塘区科学研究与技术开发计划项目国家“万人计划”青年拔尖人才专项

桂科合 1347004-18桂农科 2015JZ1382017NZ132015309组厅字[2015]48号

2017

家畜生态学报
西北农林科技大学

家畜生态学报

CSTPCD北大核心
影响因子:0.635
ISSN:1673-1182
年,卷(期):2017.38(9)
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