| 成年云岭黑山羊的屠宰性能及肉质理化特性研究* |
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| 引用本文： | 李鑫玲,李世俊,曹振辉,葛长荣,程志斌,汪善荣,黄启超,常 青.成年云岭黑山羊的屠宰性能及肉质理化特性研究*[J].云南农业大学学报,2008,23(4):519-522. |
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| 作者姓名： | 李鑫玲 李世俊 曹振辉 葛长荣 程志斌 汪善荣 黄启超 常 青 |
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| 作者单位： | (1. 云南农业大学食品科学技术学院,云南 昆明 650201;;2. 云南农业大学校长办公室,云南 昆明 650201;;3.云南省动物营养与饲料重点实验室,云南 昆明 650201;;4. 云南农业大学学报编辑部,云南 昆明 650201) |
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| 摘 要： | 对白天放牧,晚上补饲的24月龄成年云岭黑山羊的屠宰性能及肉质理化特性进行研究。8头云岭黑山羊用于本试验,所有试验山羊14日龄去势,90日龄断奶。断奶后采用“白天放牧、晚上补饲”的半放牧饲养方式,补充饲料粗蛋白18.5%,代谢能12.5 MJ/kg。饲养至24月龄屠宰,测定屠宰性能和背最长肌理化特性。屠宰性能结果显示,宰前活重、胴体重、净肉重、屠宰率和净肉率分别为37.6 kg,20.8 kg,15.8 kg,55.3％和42.0％。背最长肌的理化特性结果显示,粗水分、粗蛋白、粗脂肪、粗灰分的百分含量分别为75.53％,19.98％,3.24％,0.99％。宰后45 min pH值6.13,在4 ℃条件下贮存24 h后的pH值5.55。结果显示,成年云岭黑山羊在较大月龄（24月龄）有较高的产肉量,肉质的各项理化指标均在正常范围内。
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| 关 键 词： | 云岭黑山羊 屠宰性能 背最长肌 理化特性 |
| 收稿时间： | 2007-9-19 |
Studies on Slaughtering Characteristics and Physicochemical Properties of Longissimus dorsi of Yunling Goat |
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| LI Xin-ling,LI Shi-jun,CAO Zhen-hui,GE Chang-rong,CHENG Zhi-bin,WANG Shan-rong,HUANG Qi-chao,CHANG Qing.Studies on Slaughtering Characteristics and Physicochemical Properties of Longissimus dorsi of Yunling Goat[J].Journal of Yunnan Agricultural University,2008,23(4):519-522. |
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| Authors: | LI Xin-ling LI Shi-jun CAO Zhen-hui GE Chang-rong CHENG Zhi-bin WANG Shan-rong HUANG Qi-chao CHANG Qing |
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| Institution: | (1.Faculty of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China;2.Yunnan Agricultural University Chancellor Secretary Office, Kunming 650201, China;3.Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China; 4.Editorial Department, Journal of Yunnan Agricultural University, Kunming 650201, China) |
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| Abstract: | The slaughtering characteristics and physicochemical properties of Longissimus dorsi of 24-month-old Yunling goats were studied in this paper. Eight newborn lambs were used as the experimental samples. They were castrated at the age of 2 weeks and weaned at the age of 90 days. After weaned, they grazed on the pasture by day and supplied with the forage containing 18.5% crude protein and 12.5 MJ/kg metabolic energies by night until 24 months old. They were slaughtered to determine the slaughtering characteristics and physicochemical properties of Longissimus dorsi. Pre-slaughter weight, carcass weight, lean meat, dressing percentage, and lean percentage were 37.6 kg,20.8 kg,15.8 kg,55.3%,42.0%, respectively. The contents of crude moisture, crude protein, crude fat, and ash of Longissimus dorsi were 75.53%, 19.98%, 3.24% and 0.99%. The pH 45 min and pH 24 h values of Longissimus dorsi were 6.13 and 5.55. The results showed that the meat yield and quality of 24-month-old Yunling goat were excellent. |
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| Keywords: | Yunling goat slaughtering characteristics Longissimus dorsi physicochemical properties |
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