| 摘要: |
| 为研究藏鸡高海拔适应机制,本试验测定了藏鸡和低地鸡种在高海拔环境饲养时的右心指数,分析了海拔和品种对鸡肺组织一氧化氮合酶(NOS)活力的影响。结果表明在高海拔环境中,藏鸡的右心指数平均为22.91%,在正常范围内;而对照的矮小隐性白(D)和寿光鸡(S)右心指数分别为28.80%和29.89%,表现不同程度的右心增大;藏鸡肺组织NOS活力明显高于低地鸡,特别是在高海拔环境中差异更加显著,比低地鸡高35%~118%。藏鸡NOS活力较高可能是藏鸡在高海拔环境右心指数保持正常的原因,是高海拔适应生理特征之一。 |
| 关键词: 藏鸡,高海拔,适应性,一氧化氮合酶NOS |
| DOI：10.11841/j.issn.1007-4333.2006.01.008 |
| 投稿时间：2005-12-06 |
| 基金项目:教育部科学技术重大项目资助(10404) |
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| Adaptability to high altitude and NOS activity of lung in Tibetan chicken |
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| Abstract: |
| For researching the mechanism of adaptability to high altitude in Tibetan chicken,the right heart indexes at high altitude were measured,and the effects of altitudes and breeds on NOS activity of lung were analyzed.The results indicated that the right heart index of Tibetan chicken was 22.91 percent within normal values,but the control groups of Dwarf Recessive White(D) and Shouguang(S) were 28.80 and 29.89 percent respectively and hypertrophy of right heart occurred.The NOS activity of Tibetan chicken was higher than that of lowland chickens,and the difference was more significant at high altitude especially,and in which the Tibetan chicken was higher than lowland chickens by percent of 35 to 118. The higher NOS activity would contribute that Tibetan chicken was resistive to highland pulmonary hypertension and right ventricle hypertrophy,and have good adaptability to high altitude. |
| Key words: Tibetan chicken,high altitude,adaptability,NOS |
