罗姆尼羊及湖羊耐热性能的测定(1989年度)

THE MEASUREMENT OF THE HEAT RESISTANCE OF ROMMNEY AND‘TAI HU’SHEEP

本文所述内容是青藏高原繁殖的英国罗姆尼羊、湖北省钟祥县繁殖的新西兰罗姆尼羊以及原产于浙江湖洲的湖羊,首次引入江西清江中亚热地区后,置于相同饲养管理条件和高气温环境下,对它们的耐热性能所作的测定,结果表明:在30℃以上高气温环境下湖羊的耐热性能最好,平均耐热系数为88.90,新西兰罗姆尼羊次之,系数为77.30,英国罗姆尼羊最差,系数为75.90.湖羊与罗姆尼羊之间的差异均极显著(P<0.01),新罗羊与英罗羊之间差异不显著(P>0.05).气温在29℃～24℃时,耐热系数分别为:湖羊99.8～96.2,新西兰罗姆尼羊为94.4～87.2,英国罗姆尼羊为87.2～81.8.湖羊与新罗羊差异不显著(P>0.05).湖羊与英罗羊之间差异极显著.

The heat resistance of England Rommney which were reproduced in QingZang plateau,New Zealand Rommney which were reproduced in Zhongxiang Co-unty,Hubei Province and‘Tai Hu’sheep which were originated in Huzhou,Zhejang Province was measured in the high temperature condition after theywere firstly introduced into the mid-subtropical region(Qingjiang,Jiangxi Pr-ovince)under the same level of breeding and management.Under the high air te-mperature condition of above 30℃,the average heat resistance coefficients of‘Tai Hu’sheep,New Zealand Rommney and England Rommney were 88.9,77.3,and 75.9 respectively.There was a significant difference between‘TaiHu’sheep and Rommney(P<0.01),while the difference between New Zeal-and Rommney and England Rommney was not significant(P<0.05).Whenthe air temperature was 29-24℃,their heat resistance coefficients Were 99.8～96.2,94.4～87.2 and 87.2～81.8 respectively.The difference between‘Tai Hu’sheep and New Zealand Rommney was not significant(P>0.05),while the di-fference between‘Tai Hu’sheep and England Rommney was very much signifi-cant(P<0.01).