杜泊、萨福克、无角陶塞特与小尾寒羊杂交肥羔肉质特性的研究

Studies on Meat Quality of Hybridized Lambs Crossed Small-tail Han Sheep with Dorper,Suffolk and Polled Dorset Sheep

选在相同条件下饲养的杜泊、萨福克、无角陶塞特与小尾寒羊杂交一代及小尾寒羊（公羔、5-6月龄、体重46-48．5kg）共16只，每个处理4只。经屠宰取背最长肌和股二头肌各半制备样品，测定肌肉中化学成分、氨基酸、矿物质和微量元素含量。结果表明：粗蛋白质含量，萨寒F1 20．8％，陶寒F1 20．5％，杜寒F1 20．1％，均高于小尾寒羊（19．6％）。每百克肉中17种氨基酸总量也分别高于小尾寒羊，依次为萨寒F1（20．09g），陶寒F1（19．78g）；社寒F1（19．13g）；小尾寒羊（18．42g）。人体营养所需要的必需氨基酸总量分别比小尾寒羊提高8．86％；8．54％和2．16％，其中组氨酸的含量显著高于小尾寒羊（P〈0．05）；杜寒F1和陶寒F1的蛋氨酸含量也显著高于小尾寒羊（P〈0．05）。与风味（鲜味）有直接关系的天冬氨酸和谷氨酸含量也分别比小尾寒羊高。萨寒F1和陶寒F1粗脂肪含量高于小尾寒羊（P〈0．05）。杂交肥羔钙极显著高于小尾寒羊（P〈0．01），铁、锰、硒含量也显著高于小尾寒羊（P〈0．05）；而小尾寒羊肥羔肉含锌量（34mg）高于杂交羊；有毒有害元素均未检出，综合评定杂交肥羔肉的营养价值和肉质品质均优于小尾寒羊。

Selected total 20, 4 each group, male lambs raised in the same condition and weighted 46- 48. 5kg（5-6month） in the experl ment. The results showed that crude protein content in meat of Suffolk× Small-tail Han Sheep F1 （SHF120. 8%）, Polled Dorset × Small-tail Han Sheep F1 （PDHF1 20. 5%）, and Dorper×Small-tail Han Sheep F1 （DHF1 20. 1%）, Small-tail Han Sheep（HH19. 6%）. Total content of 17 types amino acids was 20.9g, 19.78g,and 19.13g and was higher than Small-tail Han Sheep（18.42g） respectively. Content of essential amino acids in human body of SHF1, PDHF1 and DHF1 increased 8.86%, 8.54% and 2.16% than that HH respectively. Methionine and histidine content of DHF, and PDH1 was significantly（ P 〈 0.05 ）higher than that of HH. Content of Asp and Glu directed relationship to special flavor of crossbred fat lamb was higher than that of HH. Content of crude fat of SHF1 and PDH F1 was higher than that of HH. Content of mieroelements Ca and Fe,Mn, Se was significantly（ P〈0.01 ）and（ P〈 0.05 ）difference in different breed lamb meat. Content of SH and PDH lamb meat was highest. Content of Zn of HH lamb meat was 34mg and was higher than that of three hybrid groups. Poisonous and harmful elements were not checked out in four different breed lamb meat. Comprehensive evaluated nutritive value and meat character, crossbred lamb meat were all superior to that of Small-tail Han Sheep.