Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for artificially cultivating large-sized seedlings of the river sand pond snakehead

A technology of artificial cultivation and sand pond snakehead, applied in fish farming, climate change adaptation, animal husbandry, etc., can solve the problems of high pathogenicity and poor effect of water worms, so as to improve the success rate of cultivation and reduce costs. , improve the effect of breeding efficiency

Active Publication Date: 2021-03-09
南京市水产科学研究所
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early stage of cultivating artificial large-scale seedlings, the traditional way of catching rotifers from ponds is mainly used for feeding, and in the later stage, water earthworms are purchased for feeding. Because water earthworms are relatively expensive and have certain pathogenicity, the effect is not good.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 The influence of fertilized egg hatching of small miscellaneous fish on the cultivation of large-size seedlings of the river sand pond snakehead

[0018] 3 days after the fry of the river sand pond snakehead came out of the membrane, the yolk material of the fry was absorbed completely, and they began to forage for food. At this time, they were fed rotifers and other plankton that had been sterilized with 2% saline at a density of 15 / mL. Dissolved oxygen should not be lower than 6mg / L, and 1 / 4 of the water should be changed every 2 days. When the seedlings grow to about 1.5cm, feed the small miscellaneous fish water flower, the daily dosage is 8% of the body weight, and the feeding is divided into 2 times, respectively at 8:00 am and 16:00 pm, and regular observation feeding and growth. After about 20 days of cultivation, the cultivation survival rate is 20%.

Embodiment 2

[0020] 4 days after the fry of the river sand pond snakehead fish came out of the membrane, the yolk material of the fry was absorbed completely, and they began to forage for food. At this time, they were fed with plankton such as rotifers that had been sterilized by 3% saline water at a density of 14 / mL. Dissolved oxygen should not be lower than 6mg / L, and 1 / 4 of the water should be changed every 2 days. When the seedlings grow to about 1.5cm, feed the small miscellaneous fish water flower, the daily dosage is 9% of the body weight, and the feeding is divided into 2 times, respectively at 8:00 am and 16:00 pm, and regular observation feeding and growth. After about 20 days of cultivation, the cultivation survival rate is 20%.

Embodiment 3

[0022] Four days after the emergence of the fish pond snakehead fish in rivers, the yolk material of the fry has been absorbed and they start to look for food. At this time, they are fed with rotifers and other plankton that have been sterilized by 3% salt water at a density of 18 / mL. Dissolved oxygen should not be lower than 6mg / L, and 1 / 4 of the water should be changed every 2 days. When the seedlings grow to about 1.5cm, feed the small miscellaneous fish water flower, the daily dosage is 10% of the body weight, and the feeding is divided into 2 times, respectively at 8:00 am and 16:00 pm, and regular observation feeding and growth. After about 20 days of cultivation, the cultivation survival rate is 20%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for artificially cultivating large-sized seedlings of the river sand pond snakehead, belonging to the technical field of aquatic organisms research. It completes the artificial cultivation of large-scale seedlings of the river sand pond snakehead through the spawning, observation, disinfection, artificial hatching and feeding of small miscellaneous fish. The large-scale seedlings of the river sand pond snakehead can provide a higher survival rate than water flowers when they are polycultured in ponds, and improve the breeding efficiency. The invention adopts the seedlings of small miscellaneous fish in the same water body as the bait in the later stage of cultivation, which reduces the cost, is simple to operate, and greatly improves the success rate of cultivation.

Description

technical field [0001] The invention relates to a method for artificially cultivating large-sized seedlings of the river sand pond snakehead, belonging to the technical field of aquatic organisms research. Background technique [0002] Odontobutis obscura (commonly known as Odontobutis obscura) belongs to Perciformes, Odontobutis obscura, Odontobutis obscura. Sexual economic fish, with tender meat and few thorns, large proportion of edible parts, delicious taste, high nutritional value, loved by people, is a local characteristic species with great development and breeding prospects. [0003] At present, the culture mode of river channa is mainly nested in river crab ponds. The survival rate of small-sized seedlings is very low due to natural enemies or single food source, but the survival rate can be improved by using large-sized seedlings (body length ≥ 2cm) , to increase breeding benefits. In the early stage of cultivating artificial large-scale seedlings, the traditiona...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A23K50/80A23K10/22
CPCA23K10/22A23K50/80A01K61/10Y02A40/81
Inventor 陈树桥周国勤尹绍武
Owner 南京市水产科学研究所