两种杂交组合猪肉品质比较

李贞明 1; 2; 余　苗 1; 马现永 1; 容　庭 1; 孟繁明 1; 李宝红 1; 张　洁 2; 李剑豪 1

文章摘要

李贞明 1,2，余　苗 1，马现永 1，容　庭 1，孟繁明 1，李宝红 1，张　洁 2，李剑豪 1.两种杂交组合猪肉品质比较[J].广东农业科学,2020,47(5):86-

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Comparison of Pork Quality Between Two Hybrid Combinations

DOI：10.16768/j.issn.1004-874X.2020.05.011

中文关键词: 藏香猪杜洛克猪小耳花猪二元杂交猪三元杂交猪肉品质

英文关键词: Tibetan pig Duroc pig small-ear pig two-way crossbred pig three-way crossbred pig meat quality

基金项目:80

作者	单位
李贞明 1,2，余　苗 1，马现永 1，容　庭 1，孟繁明 1，李宝红 1，张　洁 2，李剑豪 1	1. 广东省农业科学院动物科学研究所 / 畜禽育种国家重点实验室 /农业农村部华南动物营养与饲料重点实验室 / 广东省畜禽育种与营养研究重点实验室，广东广州 510640；2. 清远市龙发种猪有限公司，广东英德 511500

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中文摘要:

【目的】比较杜洛克公猪与藏香母猪的二元杂交组合猪（简称杜藏猪，DZ）和杜耳母猪（杜洛克公猪与小耳花母猪的后代）与藏香公猪的三元杂交组合猪（简称藏杜耳猪，ZDE）的肉品质差异。【方法】于 10 月龄，禁食 12 h 后，分别挑选 8 头（公母各半）进行屠宰取样，测定其胴体品质和肉质性状以及肌肉中肌内脂肪、肌苷酸、脂肪酸和氨基酸的含量。【结果】（1）DZ 猪和 ZDE 猪的胴体品质无显著差异。（2）与 ZDE 猪相比，DZ 猪肌肉的 pH45 min 值显著提高了 4.19%；而 L*24 h 值和剪切力分别显著降低了 6.26% 和17.61%。（3）与 ZDE 猪相比，DZ 猪肌肉中肌内脂肪和肌苷酸的含量分别显著提高了 121.59% 和 40.88%。（4）与 ZDE 猪相比，DZ 猪肌肉中亚麻酸和二十碳二烯酸含量分别显著降低了 21.05% 和 33.33%；而二十碳烯酸显著提高了 33.71%。（5）与 ZDE 猪相比，DZ 猪肌肉中蛋氨酸、苏氨酸、谷氨酸、丝氨酸和酪氨酸的含量分别显著提高了 58.71%、45.94%、176.94%、36.87% 和 48.02%，且 DZ 猪肌肉中总氨基酸、总必需氨基酸和总非必需氨基酸的含量分别显著提高了 22.65%、16.78% 和 24.51%。【结论】杜洛克公猪与藏香母猪的二元杂交组合猪具有更优的肉品质和营养价值。

英文摘要:

【Objective】Two-way crossbred pigs（DZ）of Duroc boars and Tibetan sowsand three-way crossbred pigs（ZDE）of Du' er sows（offspring of Duroc boars and small-ear spotted sows）and Tibetan boarswere used to compare the difference of meat quality.【Method】At the age of 10 months, after fasting for 12 hours, 8 heads（4 males and 4 females）were selected for slaughtering and sampling, and the carcass quality and meat quality traits as well as intramuscular fat, inosinic acid, fatty acid and amino acid contents were measured.【Result】The results showed that:（1）there was no significant difference in carcass quality between DZ and ZDE.（2）Compared with ZDE, the pH45min value of muscle in DZ increased by 4.19%（P ＜ 0.05）, while the L *24h value and shear force decreased by 6.26% and 17.61%, respectively（P ＜ 0.05）.（3）Compared with ZDE, the contents of intramuscular fat and inosinic acid in muscle of DZ increased by 121.59% and 40.88%, respectively（P ＜ 0.05）.（4）Compared with ZDE, linolenic acid and eicosadienoic acid in muscle of DZ decreased by 21.05% and 33.33%, respectively（P ＜ 0.05）, while eicosenoic acid increased by 33.71%（P ＜ 0.05）.（5）Compared with ZDE, the contents of methionine, threonine, glutamic acid, serine and tyrosine in muscle of DZ increased by 58.71%, 45.94%, 176.94%, 36.87% and 48.02%, respectively（P ＜ 0.05）, and the contents of total amino acids, total essential amino acids and total non-essential amino acids in muscle of DZ increased by 22.65%, 16.78% and 24.51%, respectively（P ＜ 0.05）.【Conclusion】It can be concluded that the crossbred pigs of Duroc boars and Tibetan sows have better meat quality and nutritional value.

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