论文部分内容阅读
近年来,洪湖县水产科学研究所由于加强亲鱼的培育管理,积极钻研技术,不断总结经验,亲鱼繁殖中的“三率”(亲鱼催产成功率、鱼卵受精率与鱼苗孵化率)逐步提高,养鱼生产获得很大的发展。该所共有亲鱼池塘20亩,饲养草、青、鲢、鳙、鲤、鳊、鲴等亲鱼共达1万多斤。1981—1982年由7人管理,共生产鱼苗24,119万尾,两年平均净产值54,109元,人平7,729.86元,亩平2,705.45元。1983年由8人管理,共催产亲鱼375组,催产成功率达82.9 ％;共产卵2.5亿粒,鱼卵受精率达84％;鱼苗孵化率
In recent years, Honghu County Institute of Fisheries Sciences due to strengthen the cultivation and management of broodstock, actively study the technology, continue to sum up experience, broodstock reproduction in the “three rates” (broodstock success rate, fish egg fertilization rate and fry hatching rate) Fish production has been greatly developed. The total of 20 acres of broodstock ponds, raising grass, green, silver carp, raccoon, carp, raccoon, raccoon and other broodstock a total of more than 10,000 kilos. From 1981 to 1982, it was managed by 7 people and produced 241,119,000 fry. The average net output value in two years was 54,109 yuan, the average figure was 7,729.86 yuan, and the average per mu was 2,705.45 yuan. 1983 managed by 8 people, co-production of brood fish 375 groups, the success rate of 82.9% oxytocin; co-production of 250 million eggs, fertilized eggs 84%; fry hatching rate