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Intensive culture method for improving rhinogobio ventralis larva culture survival rate

A technology for the survival rate of albacores, which is applied in the field of intensive cultivation of high survival rate of albacores seedlings, can solve the problems that juvenile fish are easily infected with small melon worms, etc., to reduce the probability of infection of fry, reduce the Possibility, the effect of reducing the probability of the outbreak of small melon worms

Active Publication Date: 2016-10-12
CHINESE STURGEON RES INST CHINA THREE GOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of intensive cultivation method that improves the survival rate of longfin gobi seedling cultivation, which can solve the problem that longfin gobo larvae and juveniles are easily infected with small meloniosis. In the seedling cultivation stage, the small melon worm was effectively controlled, which improved the survival rate of the albacore seedling cultivation and laid the foundation for a breakthrough in the large-scale seedling cultivation technology of the albacorea

Method used

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Examples

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Effect test

Embodiment 1

[0032] An intensive culture method for improving the survival rate of albacore seedling cultivation, the method comprises the following steps:

[0033] Step 1: Pre-larvae cultivation: In a small water body culture pond, the albacore larvae with a fish age of 1 day to 6 days are cultured in still water. During the breeding process, micro-aeration is used to cultivate the albacore larvae. Density 800-1000 tails / cubic meter; shading treatment above the small water body culture pond,

[0034] When the albacore larvae grow to 5 days to 6 days old, start feeding a small amount of rotifers in the small water body culture pond (the feeding amount is 0.1 rotifers / ml in the water body), and feed once a day (8:30 in the morning), after starting to feed the rotifers, clean the small water body breeding pond once a day;

[0035] Step 2: Cultivation of late larvae: continue to culture the albacore larvae cultured in step 1 in the small water body culture pond until the fin rays are basical...

Embodiment 2

[0054] An intensive culture method for improving the survival rate of albacore seedling cultivation, the method comprises the following steps:

[0055] Step 1: Pre-larvae cultivation: In a small water body culture pond, the albacore larvae with a fish age of 1 day to 6 days are cultured in still water. During the breeding process, micro-aeration is used to cultivate the albacore larvae. Density 800-1000 tails / cubic meter; shading treatment above the small water body culture pond,

[0056] When the albacore larvae grow to 5 days to 6 days old, start feeding a small amount of rotifers in the small water body culture pond (the feeding amount is 0.1 rotifers / ml in the water body), and feed once a day (8:30 in the morning), after starting to feed the rotifers, clean the small water body breeding pond once a day;

[0057] Step 2: Cultivation of late larvae: continue to culture the albacore larvae cultured in step 1 in the small water body culture pond until the fin rays are basical...

Embodiment 3

[0076] An intensive culture method for improving the survival rate of albacore seedling cultivation, the method comprises the following steps:

[0077] Step 1: Pre-larvae cultivation: In a small water body culture pond, the albacore larvae with a fish age of 1 day to 6 days are cultured in still water. During the breeding process, micro-aeration is used to cultivate the albacore larvae. Density 800-1000 tails / cubic meter; shading treatment above the small water body culture pond,

[0078] When the albacore larvae grow to 5 days to 6 days old, start feeding a small amount of rotifers in the small water body culture pond (the feeding amount is 0.1 rotifers / ml in the water body), and feed once a day (8:30 in the morning), after starting to feed the rotifers, clean the small water body breeding pond once a day;

[0079] Step 2: Cultivation of late larvae: continue to culture the albacore larvae cultured in step 1 in the small water body culture pond until the fin rays are basical...

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Abstract

The invention provides an intensive culture method for improving rhinogobio ventralis larva culture survival rate. The method comprises the steps of: step 1, pre-larva culture, step 2, post-larva culture, and step 3, juvenile fish culture. In the step 3, juvenile rhinogobio ventralis is cultured in a small water culture pond. An artificial compound feed is used for feeding twice a day. After each feeding, the small water culture pond is cleaned in time, and 60-80wt% of water in the small water culture pond is replaced. With the intensive culture method for improving rhinogobio ventralis larva culture survival rate, a problem that rhinogobio ventralis larvae and juvenile are vulnerable to ichthyophthiriasis can be solved. Ichthyophthiriasis is effectively controlled during the rhinogobio ventralis larva culture stage, and rhinogobio ventralis larva culture survival rate is improved. Therefore, a basis is established for the breaking-through of rhinogobio ventralis larva large-scale culture technology.

Description

technical field [0001] The invention relates to the technical field of protection of rare and unique fish species, in particular to an intensive cultivation method for cultivating high survival rate of longfin gobilin seedlings. Background technique [0002] Rhinogobio ventralis (Rhinogobio ventralis), which belongs to Cyprinidae and Cyprinidae, is a small bottom-dwelling economic fish endemic to the upper reaches of the Yangtze River. According to statistics from the Institute of Hydrobiology of the Chinese Academy of Sciences since 1997, the longfin catfish accounts for 10% of the upstream fishery resources. The wild resources of the scorpion are in sharp decline. In April 2014, the Chinese Sturgeon Research Institute of the China Three Gorges Corporation first broke through the artificial propagation technology of the albacore in China. Melonworm disease, resulting in low seedling survival rate, has become a bottleneck problem in the large-scale cultivation of albacore ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K50/80
CPCA01K61/00Y02A40/81
Inventor 管敏曲焕韬刘勇胡美宏
Owner CHINESE STURGEON RES INST CHINA THREE GOR
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