论文部分内容阅读
永州市水产工作站,1989年10月从湖北引进5厘米长的美国鲴鱼,经过7个多月的养殖,已定居传代,在1990年6月上旬繁殖了一批鱼苗,为永州鱼类养殖增加了一个新品种。美国鲴鱼的特点:一是食性杂,食物来源广,饲料容易解决,不吞食其它活鱼,既能单养,又能与其它鱼类混养;二是耐低氧能力强,可实行密放精养高产,同时对水质环境要求低,只要能饲养四大家鱼的水体均可饲养美国鲴;三是生长速度快,一般当年个体可达100～150克。第二年可
Yongzhou Aquatic Work Station. In October 1989, a 5-centimeter-long American catfish was introduced from Hubei Province. After more than 7 months of breeding, it has settled down and passed away. In early June 1990, a batch of fish fry was raised, which increased the fish breeding in Yongzhou A new breed The characteristics of the United States catfish: First, food miscellaneous, wide source of food, feed easy to solve, do not devour other live fish, both monoculture, but also with other fish polyculture; Second, low tolerance to hypoxia, can be implemented close Put fine intensive high yield, while the water quality and environmental requirements are low, as long as the water can feed the four major domestic fish can be fed the United States 鲴; Third, the growth rate is fast, the average individual up to 100 to 150 grams. The second year can be