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为了谋求罗非鱼的高产优质,探索罗非鱼单性养殖的途径,已成为当今举世瞩目的课题。我们于1985年在慈利县罗非鱼繁殖场进行了尼罗罗非鱼、奥利亚罗非鱼及其杂种(正反交)一代的雄性率、个休生长速度、群体生产力比较的初步观察。现将试验结果报告如下: 材料和方法一、试验材料尼罗罗非鱼是长江水产研究所于1978年从苏丹青尼罗河引进的后裔,我们再于1979年引入大庸县罗非鱼原种场饲养,本试验材料由大庸县罗非鱼原种场提供,亲鱼个体重
In order to seek the high yield and quality of tilapia, exploring ways of tilapia monolayer breeding has become a world-wide issue nowadays. We conducted a preliminary comparison of male rates, individual growth rates, and population productivity in the tilapia breeding farm in Cili County in 1985 with the generation of Nile tilapia (Oreochromis niloticus), Oreochromis niloticus (Oreochromis niloticus) and their hybrids Observed. Now the test results are reported as follows: Materials and Methods I. Test Materials Nile tilapia is a descendant of the Yangtze River Fisheries Research Institute imported from the Blue Nile in Sudan in 1978. We introduced the original tilapia farms in Dayong County in 1979 Feeding, the test materials provided by the original tilapia field Dayi County, broodstock individual weight