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A method for early breeding of largemouth bass

A technology for largemouth bass and perch, which is applied in the fields of fish farming, application, and climate change adaptation. It can solve the problems of heavy broodstock stress response, heavy broodstock injury, and heavy workload, and achieve low cost, regularity, and Effects of preventing waste and water pollution

Active Publication Date: 2016-09-28
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many disadvantages in this method of promoting early spawning of fish through artificial oxytocin or artificial insemination: firstly, the damage to the broodstock itself is relatively large, and the stress response of the broodstock after oxytocin is severe, which affects spawning; secondly, injection of oxytocin It is necessary to operate each fish one by one, and the workload is heavy; and the broodstock that has been induced by hormones cannot be accepted by consumers because they have been injected with hormones.

Method used

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  • A method for early breeding of largemouth bass
  • A method for early breeding of largemouth bass
  • A method for early breeding of largemouth bass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] a. Early cultivation: Before September, select 1-year-old perch as parents, and stock about 1300 groups of parents of about 0.5kg per mu in the cultivation pond; between June and September, feed extruded feed twice a day, select respectively Feed at 10:00 am and 4:00 pm, and an extruded feed concentration device is placed in the cultivation pond. Properly adjust the feeding amount according to the temperature and weather. Generally, the feeding is stopped until the fish do not eat much. Considering the floating property of the extruded feed, in order to achieve the purpose of controlling the feed in a specific area for the fish to eat, use The described extruded feed concentration device is installed to ensure the growth and development of broodstock; a small amount of silver carp and crucian carp can be nested in the cultivation pond.

[0053] b. Intensive cultivation: From September to November, the extruded feed is changed to ice fresh fish to feed broodstock. Becaus...

Embodiment 2

[0058] What is different from Example 1 is that in the early stage of cultivation, the 2-year-old perch is selected as the parent, and 1000 groups of parents of about 0.7kg are stocked in each mu of the cultivation pond. 260 tails, the water temperature of the hatchery was controlled at 28°C during incubation, and other conditions were the same.

Embodiment 3

[0060] What is different from Examples 1 and 2 is that in the early stage of breeding, the perch mixed with the 1st age and the 2nd age is selected as the parent, and 1200 groups of parents of about 0.6kg are stocked in each acre of cultivation ponds, and the stocking density of the parents is: put the male fish in a suitable place per acre 220 fish, 250 female fish, the water temperature in the hatchery is controlled at 25°C during hatching, and other conditions are the same.

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Abstract

The invention belongs to the fish feeding field, and specifically relates to a Micropterus salmoides early breeding method comprising the following steps: a, selecting parent Micropterus salmoides for early breeding in a cultivation pond; b, selecting strong and illness-less parents, and placing the parents into a transparent greenhouse for intensified cultivation; c, placing artificial fish nests attached by germ cells into a transparent hatching greenhouse for hatching, and artificially controlling hatching pond water temperature. By using the method, the Micropterus salmoides needs no artificial hasten parturition and artificial fertilization, and natural oviposition and fertilization can be realized by controlling water quality, nutrition, dissolved oxygen and temperature conditions; the method sets up a temperature control system in the hatching pond, and controls the hatching pond water temperature at 25-28 DEG C, thus effectively preventing Micropterus salmoides germ cells from getting saprolegniasis, and greatly improving hatching survival rate of the germ cells.

Description

technical field [0001] The invention belongs to the field of fish breeding, and in particular relates to an early breeding method for largemouth bass. Background technique [0002] In the reproduction and production of fish, the fry bred earlier can be sold at a higher price due to the vacancy of the market, and can occupy the market as soon as possible to obtain more benefits. In the process of artificial reproduction, it is generally necessary to induce spawning of the broodstock, so that the broodstock can concentrate on laying eggs within a certain period of time, which includes "artificial induction, artificial insemination" and "artificial induction, natural fertilization". There are many disadvantages in this method of promoting early spawning of fish through artificial oxytocin or artificial insemination: firstly, the damage to the broodstock itself is relatively large, and the stress response of the broodstock after oxytocin is severe, which affects spawning; second...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00A01K61/02A01K63/00A01K63/04A01K61/10A01K61/17A01K61/80
CPCA01K61/00A01K63/003A01K63/042A01K63/045Y02A40/81
Inventor 万全余鹏丁淑荃吴根发李忠伟胡先锋宋新欢
Owner ANHUI AGRICULTURAL UNIVERSITY
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