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Wild-training method for improving feeding ability of released Acipenser dabryanus

A technique of rhododendron, training method, applied in the direction of climate change adaptation, animal feed, animal feed, etc., to achieve the effects of high growth and survival rate, improved feeding ability and predation ability, and improved ability

Active Publication Date: 2015-03-11
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no wild training technology has been implemented for the proliferation and release of Dabry's sturgeon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Predatory ability training begins with newly hatched juveniles.

[0024] 1. Production of bait:

[0025] Artificial production of worms bait: disinfection of fresh and live worms by ultraviolet light, cutting worms into pieces of different lengths by means of a pulverizer or manual knife, and becoming worms slurry bait;

[0026] Artificial production of fish meal and shrimp meal: small river shrimp and small trash fish are caught from fish ponds or purchased from the market, pulverized by a pulverizer, and made of fish meal and shrimp meal (extracted) by air-drying, air-drying or low-temperature refrigeration; use a mesh sieve Sorting different specifications of shrimp meal and fish meal to become fish meal and shrimp meal (excessive) bait;

[0027] Buy small shrimps and small trash fish of different sizes from fish ponds or markets to become live bait.

[0028] 2. Feeding domestication:

[0029] Select 200 newly hatched sturgeon larvae, 1-10 days old do not feed bai...

Embodiment 2

[0033] Take the sturgeon that has ingested artificial biological food for 3 months as an example.

[0034] Before domestication, after the 3-month-old sturgeon stopped eating for 2 days, from the 3rd day, gradually add shrimp, shrimp meal or surimi, surimi powder to the artificial compound feed, the particle size is 4mm, and the raw material is added every 5 days. On the basis of the amount, increase the ratio by 5%. After 1 month, start feeding fresh and live small fish and shrimp. The size of the small fish and shrimp can be gradually increased, but the total length is less than 20mm, and the feeding ratio is every 10 days. Increase by 10% on the basis of the original feeding amount, and gradually reduce the feeding amount of artificial biological feed. The feeding of the bait is once in the morning, in the middle and in the evening, and the feeding amount is 3-5% of the total weight of the total number of sturgeon in the breeding pond. After 30 days, when the domesticated s...

Embodiment 3

[0038]Take a 1-year-old sturgeon that has ingested artificial compound feeds as an example.

[0039] Before domestication, after 1-year-old sturgeon stopped eating for 2 days, feed fresh and live small trash fish and shrimp from the third day. The size of small trash fish and shrimp can be gradually increased, and the full length of small trash fish and shrimp All are less than 30mm, the added ratio is increased by 10% on the basis of the original feeding amount every 10 days, and the feeding amount of artificial compound feed is gradually reduced. The feeding of the bait is once in the morning, in the middle and in the evening, and the feeding amount is 3-5% of the total weight of the total number of sturgeon in the breeding pond, until the proportion of domesticated sturgeon that preys on small fish and shrimp reaches the total amount of aquaculture. After 50% of the discharge can be implemented.

[0040] Experimental data

[0041] The experiment took 100 1-year-old sturge...

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Abstract

The invention provides a wild-training method for improving the feeding ability of released Acipenser dabryanus. The wild-training method comprises the following steps that fish bait is produced; feeding domestication is conducted, wherein feeding domestication starts when are hatched, feeding domestication is conducted on the Acipenser dabranus which are fed with artificial feed for 2-4 months and feeding domestication is conducted on the Acipenser dabranus which are fed with the artificial feed for over 5 months; Through the wild-training method for improving the feeding ability of the released Acipenser dabrayanus, after training is over, both the feeding capability and the predation capability of the Acipenser dabryanus with different specificications are obviously enhanced and improved. After analog wild-release is conducted, the trained Acipenser dabryanus is released to the wild or an experimental pond, the capability of preying on wild life live baits is obviously improved, and the growth rate and the survival rate are obviously higher than the released Acipenser dabryanus which is not trained.

Description

technical field [0001] The invention relates to the research field of fishery resources conservation technology, in particular to a wild training method for improving the feeding ability of released sturgeon. Background technique [0002] Carrying out artificial proliferation and release of fish is an important way to conserve fishery resources and protect rare fish. All over the world, the implementation of artificial breeding and release of fish has a history of more than 100 years. my country has gradually implemented artificial breeding and release since the 1980s. The types, scale and intensity of release have also increased year by year, but the effect of breeding and release is not ideal. . Existing studies have shown that the poor survival and adaptability of proliferated and released fish in the wild is the main reason for the low survival rate of released fish, and it is also the main limiting factor affecting the effect of proliferation and release. The ability t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00A23K1/18A23K1/10
CPCY02A40/81
Inventor 杜浩危起伟李罗新乔新美刘志刚甘芳熊伟吴金明
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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