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Loach fry breeding method

A method of cultivating loach, applied in fish farming, climate change adaptation, additional food elements, etc., can solve the problems of high mortality and low emergence rate, and achieve the effects of improving survival rate, improving digestion ability, and promoting growth.

Inactive Publication Date: 2017-06-20
LIUZHOU WENHUA BREEDING FARM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of cultivation method of loach larvae, the technical problem to be solved is: the mortality rate of loach artificial breeding is too high in the opening stage, and the emergence rate is low

Method used

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Embodiment Construction

[0009] The principles and features of the present invention are described below, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0010] A method for cultivating loach larvae, comprising the following steps:

[0011] In spring and April, when the natural water body temperature is above 18°C, choose a mature loach with a good body shape, a strong physique, a lot of mucus, and is healthy and harmless as a parent;

[0012] After the mature loach spawns, the water temperature is 25°C for hatching. After the yolk sac of most of the larvae basically disappears after the hatching of the loach seedlings, the loach seedlings are cultivated with open bait. The open bait is calculated by weight and consists of the following raw materials: crude protein 36.0~ 37.0 parts, 8.0-9.0 parts of fat, 15.5-16.0 parts of ash and 11.0-13.0 parts of water;

[0013] After cultivating to 7 days, transfer to the p...

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Abstract

The invention relates to a loach fry breeding method. The method includes the following steps that in April in spring, when the temperature of a natural water body is 18 DEG C or above, mature loaches which are regular in shape, strong in physique, much in mucus, healthy and free of wounds are selected as parents; after oviposition of the mature loaches, hatching is conducted at the water temperature of 25 DEG C, and after loach fry hatching is completed and yolk sacs of most loach fry almost disappear, the loach fry are fed with initial feed, wherein the initial feed is prepared from, by weight, 36.0-37.0 parts of crude protein, 8.0-9.0 parts of fat, 15.5-16.0 parts of ash and 11.0-13.0 parts of water; after the loach fry are bred for 7 days, the loach fry are transferred into a pond and bred through a conventional summer breeding technology. Compared with the prior art, the method completely meets energy requirements of loaches, remarkably improves the digestive ability of intestinal tracts of the loaches, promotes growth, remarkably improves organism immunity of the loach fry, and increases the survival rate.

Description

technical field [0001] The invention relates to a method for cultivating loach larvae. Background technique [0002] At present, through the continuous efforts of aquatic scientific and technological personnel, many research results have been obtained in the cultivation of brood loach, the selection and compatibility of oxytocin drugs, oxytocin, hatching and seed cultivation technology. Stable or with nutritional deficiencies, the open-mouth cultivation of its larvae has not yet formed a mature technical system, resulting in high mortality and low emergence rate of loach artificial seedlings at the open-opening stage, unable to provide timely batches of loach seedlings for breeding, and it is difficult to form a stable scale industry. Contents of the invention [0003] The purpose of the present invention is to provide a method for cultivating loach larvae. The technical problem to be solved is: the mortality rate of loach artificial seedlings is too high at the opening s...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K50/80A23K20/142A23K20/158A23K20/10A23K20/20
CPCA01K61/00Y02A40/81
Inventor 余琼吴晓璇
Owner LIUZHOU WENHUA BREEDING FARM
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