Coregouns peled seedling aquaculture food conversion method

Abstract

The invention discloses a coregouns peled seedling aquaculture food conversion method. A water source is spring water; the total hardness of the spring water expressed by the content of calcium carbonate in water is less than or equal to 350mg / L, the water temperature is 10-16 DEG C, the dissolved oxygen is 7.8-9.6mg / L, the pH value is 6.2-7.8, and the water flow rate is 0.8-1.5m / s; a fry aquaculture pond occupies 20-23m<2>, and the water depth is 50-70cm; in 7-10 days after the mouths of fries of the coregouns peled open, coregouns peled enters a food conversion stage, and the aquaculture steps are divided into 8 stages; the previous two stages generally last for 3 days, the third and the fourth stages generally last for 7 days, the fifth and the sixth stages generally last for 10 days, and then the fries enter the eighth stage; in the previous stages, the feeding quantity of a granular material is gradually increased, and plankton baits are gradually reduced; the sizes of the granules are gradually increased, and till the eighth stage, the coregouns peled are fully fed with the granular materia. According to the food conversion method, the coregouns peled with mouths open can go through the food conversion stage quickly to keep sufficient nutrition, and the growing rate is increased.

Description

technical field [0001] The embodiments of the present invention relate to the field of fishery, and more specifically, the embodiments of the present invention relate to a method for cultivating tall whitefish seedlings and switching to food. Background technique [0002] High whitefish belongs to Salmonidae whitefish genus, is a kind of high oxygen consumption cold water fish, lives in high latitude ice water rivers and lakes, can be divided into three types, namely river type, lake type and river lake type three kind. River-type species, they migrate to rivers to lay eggs and reproduce, and their young fish migrate to lakes for feeding and fattening, and migrate with different lengths; lake-type species, they adapt to life in still water of lakes, and can complete life such as feeding, growth, and reproduction The whole biological process of the activity; and the river-lake type species, they are between the river-type and lake-type species. The nutrition in the muscle o...

AI Technical Summary

Problems solved by technology

At present, there are few complete sets of artificial breeding techniques for high whitefish. Chinese patent 200910113538.2 discloses a method for artificial breeding of high whitefish. It introduces in detail the operation method of several stages from parent selection to fry cultivation. The fish fry after the film are transferred to the breeding tank for feeding. The water depth of the breeding tank is 30cm, the stocking density is 400 fish / L, the dissolved oxygen in water is greater than 7mg / L, and the fry opening feed is Artemia, and the daily feeding amount is 20% of the total weight of the fry. About 6-8 times of feeding, until the fry grow to a body length of more than 1.5 cm and respond sensitively to external light and shadow, they emerge and grow up in fish ponds

The patent does not mention feeding technology specifically for the feeding stage of fry