Artificial propagation method for mystus macropterus

A technology of artificial breeding and large-finned beetle, applied in fish farming, application, climate change adaptation, etc., to achieve the effect of simple and convenient feeding

Active Publication Date: 2015-04-08
重庆市水产科学研究所
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The average individual weight of big fin fish is about 0.5 kg, and the largest individual can reach 5 kg. It is rich in prote

Method used

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  • Artificial propagation method for mystus macropterus

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Example Embodiment

[0031] Example 1

[0032] Combine figure 1 As shown, the following is an embodiment of the present invention:

[0033] 1) Feed the giant finfish fry until they reach sexual maturity

[0034] If it is a wild finfish, it needs to be fed and domesticated. In this process, the fry are soaked in 1.5-2% salt water for 3 to 5 minutes and then enter the pond, and are fed with water earthworms 5-15 days before entering the pond. After 15 days, the fry were fed with 40% (weight) protein content soft pellets processed with fresh surimi and powder, and the daily feeding amount was 2% of body weight. When the water temperature is lower than 18 degrees, gradually reduce the feeding amount and do not feed below 12 degrees. Flush the feeding fish pond regularly every day and change the water regularly every month to ensure good water quality. At the same time, turn on the aerator regularly every day to ensure that the broodstock is not hypoxic. Feed in this way until the female fish’s ovaries ...

Example Embodiment

[0048] Example 2

[0049] In this embodiment, the difference from 1) to 6) of embodiment 1 is that in step 5), the fertilized eggs are incubated in the incubator with running water.

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Abstract

The invention provides an artificial propagation method for mystus macropterus. The artificial propagation method comprises the following steps of fry feeding, artificial oxytocin injection, spawn taking and sperm collection, fertilization, incubation and temporary rearing and cultivating. LHRH (luteinizing hormone releasing hormone)-A2, DOM (dissolved organic matters) and HCG (human chorionic gonadotropin) serve as the oxytocin, the spawning rate in artificial hastening parturition reaches 74%, a circumstance that propagation is carried out by killing the mystus macropterus is avoided, the spontaneous delivery rate reaches 62%-76%, and the fertility rate reaches 14%-32%. In an incubation process, fertilized spawns are placed in hyperoxic flowing water, the incubation rate reaches 27.5%-76.19%, and the temporary rearing survival rate reaches 87.6%. The fries of the mystus macropterus eat feedstuff with 40% of protein level when the fries are small, the feedstuff is processed by fresh minced fillet and powder, the fries are easy and convenient to feed, and the mystus macropterus can be articially propagated in batches.

Description

technical field [0001] The invention belongs to fish breeding technology, in particular to an artificial breeding method of bigfin carp without killing fish and extracting sperm. Background technique [0002] The big fin fish belongs to Siluriformes, distributed in various water systems from the Yangtze River to the Pearl River. It is a bottom-dwelling fish. It mostly inhabits the main streams and tributaries of rivers with fast currents and rocky bottoms, and likes to cluster. Foraging at night, mainly benthic animals, such as snails, mussels, aquatic insects and their larvae, shrimps, small fish, etc., and occasionally higher plant debris and algae. Eggs are laid on the flowing water beach from June to July, and the eggs adhere to the rocks for development. Distributed in various water systems from the Yangtze River to the Pearl River, it is more common in the middle and upper reaches of the rivers, and is one of the common edible fish. The average individual weight of b...

Claims

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Application Information

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IPC IPC(8): A01K61/00A01K61/10
CPCA01K61/00Y02A40/81
Inventor 朱杰陈元坤李双蒋伟张闯但言张峰马跃岗王小寒颜晓勇罗晓冬
Owner 重庆市水产科学研究所
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