Efficient industrialized breeding method for northeast loach

Abstract

The invention relates to fish breeding technology, in particular to an efficient industrialized breeding method for northeast loaches. The method comprises the following steps: (1) male loaches and female loaches living for 2 to 3 years are chosen and are respectively fed for 40 to 50 days; (2) each female loach receives subcutaneous injection of parturition hastening medicine liquid at 0.0500to 0.0575 mL / g; (3) after the subcutaneous injection, the male loaches and the female loaches are respectively fed continuously for 12 to 14 days; (4) the male loaches and the female loaches are fed in a mixed mode, after copulation and egg-laying are completed, the female loaches and the male loaches are taken away, and after eggs are hatched, an average hatchability is over 99.8%; and (5) loach fries are fed. The method solves the problems that fry rate is low in natural breeding, copulation is incomplete, hatchability for a germ cell is low, the fries are threatened by small natural enemies so that survival rate is low and the like. According to the efficient industrialized breeding method for the northeast loaches, the bred loach fries are in high quality and the requirement for manual large scale breeding of the loaches is satisfied. The method has great economic, social and biological significance and wide application prospect.

Description

[0001] technical field [0002] The invention relates to a fish breeding technology, that is, a high-efficiency industrial seedling raising method for Northeast flower loach. Background technique [0003] In the prior art, Northeast flower loach is loach ( Oriental weatherfish ) is a species in Loach family Loach is a small perennial freshwater economic fish, in the northeast of my country can survive the winter naturally, breeding technology is simple, operability is strong, it is a short flat quick get rich project. Flower loach can be used as medicine, which has the effects of warming the middle and replenishing qi, sobering up alcohol, and relieving thirst. At the same time, the flower loach has tender meat, rich nutrition, light and delicious taste, and is a kind of fish with high nutritional and economic value. [0004] In recent years, due to the extensive use of chemical fertilizers and pesticides in paddy fields, the development of natural waters such as swamps, and...

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Problems solved by technology

[0004] In recent years, due to the extensive use of chemical fertilizers and pesticides in paddy fields, the development of natural waters such as swamps, and the increase in fishing intensity, and due to the poor natural reproductive capacity of flower loach and the extremely low seedling rate, the wild resources of flower loach have been increasing year by year. The reduction of wild flower loach has been unable to meet the market demand. With the continuous increase of domestic and foreign market demand, artificial breeding of flower loach has been carried out in various parts of Northeast my country. However, due to incomplete fertilization, low hatching rate of fertilized eggs and small natural enemies of fish fry Harm and other reasons lead to problems such as extremely low seedling rate, which seriously restricts the development of artificial breeding of loach

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