Method for increasing survival rate during food-changing period of Juvenile Abalone

Abstract

The invention relates to a method for improving the survival rate of young abalones during the food conversion period. The method is characterized in that while young abalones are fertilized, a palatable bait on tetrapod bricks is cultivated in a pond which is used for cultivating the young abalones in future, the pond is covered with a sunshade net, and the illumination intensity is controlled at 3,000-5,000lux; after the dirt on the surface of the tetrapod bricks is completely removed, the tetrapod bricks are imbricately arrayed in the pond, filtrated seawater is added to the pond to 45-55cm in depth, the selected mixed unicellular algae species are inoculated and separated, slightly aerated, cultivated in still water for 12-24h and moderately added with more air; the algae on the tetrapod bricks is cultivated in long running water by adopting the conventional condition that an abalone algae bait is cultivated by a plastic film; one month later, the young stripping abalones are put into the pond, meanwhile, artificial baits such as the abalone bait, minced gracilaria, kelp, and the like, are fed and feeding amount of the artificial baits are gradually increased. The method for improving the survival rate of the young abalones has the advantages that the survival rate of the young abalones is greatly improved as the food conversion time is prolonged from 1 day to 1 week, the operation method is simple and the effect is obvious.

Description

technical field

[0001] The invention relates to a method for improving the survival rate of juvenile abalone during feeding. Background technique

[0002] After being cultivated on the attached seedling film for a month, the juvenile abalone with nine holes gradually grew to more than 0.5 cm. At this time, the bait on the attached seedling film was basically exhausted. Breeding on four-legged bricks at the bottom of the pool (Cai Zhujin, 2005; Liao Zhiqiang, Lin Guangwen, Wang Quan, 2007; Yan Zhenglin, 2001). At present, the common treatment method of four-legged bricks is as follows: after sterilizing the pond and four-legged bricks in which the juvenile abalone is to be raised, arrange the four-legged bricks on the bottom of the pond, add seawater to a depth of about 70cm, keep running water for a long time, and change the water every day. More than twice the water body, feed powdered abalone feed or chopped gracilaria and kelp every morning and evening (Liao Zhiqiang, Li...