光合细菌P—3作为几种浮游动物与鱼类饵料添加剂的试验

本试验系采用福州菜地沟泥分离和培养出来的光含细菌P-3菌液作为饵料添加剂,培养发头裸腹(?)和花箧臂尾轮虫均有增产效果;培养短盖巨脂鲤鱼苗、革胡子鲶鱼苗和饲养鹤顶红金鱼均提高成活率,同时,可减少水体的换水次数。试验表明,此细菌有开发和利用的价值。

The Experiment on Photosynthetic Bacteria P-3 as Feed Additive for Some Zooplanktons and Fishes

P-3 of the purple nonsulfur photosynthetic bacteria(Family Rhodospirillaceae), which was isolated from the ditch's mud collected at vegetable garden in Fuzhou, Fujian, is used as feed additive for water flea Moina irrasa, rotifer Brachionus capsuliflorus, freshwater carp Colossoma brachypomum, catfish Clarios leather and golden fish Cavassius auratus.The results are as follow:1. P-3 is added to the cultural media for Moina irrasa. There are more larvae at a birth, faster growth, higher production and longer life-span in the experimental groups than in the control groups.2. In the cultural media containing PSB for Brachionus capsuliflorus, the production of rotifer increases. The more basic nutrition(cow-dung)in the cultural media, the better effect of P-3.3. When P-3 is used as feed additive for fry, Colossoma brachypomum and Clarias leather have a high survival rate and water in the aquarium do not need to renew very often.4. P-3 is used as feed additive for golden fish, Carassius auratus has a low mortality and water in aquarium is not renewed in a month.5. From the experiments mentioned above, it shows that P-3 is worth of development and utilization.