A rotifer high-density culture method

Abstract

The present invention provides a rotifer high-density culture method including a technical scheme: seawater chlorella pyrenoidosa is used to feed rotifers with a seawater chlorella pyrenoidosa liquid concentration thrown into water body, namely a precipitation rate, of 20%-25%, a culture water body of 1500 L, a pH value controlled at 6.5-8, a dissolved oxygen concentration controlled at 3-25 mg / L, a water temperature controlled at 20-36 DEG C, and a salinity controlled at 19-30%. The control method of throwing the seawater chlorella pyrenoidosa into the water body is that intestine and stomach changes of the seawater chlorella pyrenoidosa are observed under a microscope in order to determine the application amount of the seawater chlorella pyrenoidosa. The PH value is adjusted with sodium bicarbonate or acetic acid, medium warming is performed in a circulating water way. Excretion of rotifers and residual baits are removed with hanging cloth. The culture method is reasonable and practical in design and time-saving and labor-saving. The cultured rotifer individuals are healthy and strong; and the culture method improves production efficiency and economic benefits of enterprises, and is suitable for general promotion and use.

Description

Technical field:

[0001] The invention relates to the technical field of rotifer cultivation, in particular to a high-density cultivation method of rotifers. Background technique:

[0002] Rotifers are a group of small multicellular animals belonging to the phylum of rotifers, with a general body length of 0.1-0.5mm. Rotifers are the most palatable active bait for fry, shrimp and crabs, so they have considerable application value in aquaculture. However, the current method of cultivating rotifers has many dead shells of rotifers, dirt attached to the body, sinking to the bottom, inactivity, no eggs, winter eggs or male bodies appearing and other poor growth performances, mainly due to water quality and temperature and It is caused by poor control of bait delivery. Contents of the invention

[0003] In order to solve the above-mentioned technical problems, the present invention provides a high-density culture method for rotifers, the technical solution of which is: feed...