How to raise crucian carp
Crucian carp is a common freshwater fish that is loved by farmers because of its strong adaptability, fast growth and high nutritional value. This article will combine the hot topics and hot content on the Internet in the past 10 days to give you a detailed introduction to the breeding methods of crucian carp, including water quality management, feed feeding, disease prevention and other key aspects.
1. Basic conditions for crucian carp farming
Crucian carp has strong adaptability to the environment, but to achieve high-yield and efficient breeding, the following basic conditions still need to be met:
| Conditions | request |
|---|---|
| water quality | pH value 6.5-8.5, dissolved oxygen ≥5mg/L, ammonia nitrogen ≤0.5mg/L |
| water temperature | 15-30℃, optimal growth temperature 20-28℃ |
| pond area | 3-5 acres is suitable, water depth is 1.5-2 meters |
| Stocking density | Stocking 2,000-3,000 animals per acre (size 5-10cm) |
2. Key technologies for crucian carp breeding
1. Water quality management
Water quality is a key factor in the success of crucian carp farming. Monitor water quality indicators regularly to keep water bodies clean. Change 1/3 of the water every week and use an aerator to ensure sufficient dissolved oxygen. In high temperature seasons, the frequency of water changes can be appropriately increased.
2. Feeding
| growth stage | Feed type | Feeding frequency | Feeding amount |
|---|---|---|---|
| Fry stage | powdered feed | 4-5 times/day | 3-5% of fish body weight |
| nurturing period | pellet feed | 3 times/day | 2-3% of fish body weight |
| Adult stage | Extruded feed | 2 times/day | 1-2% of fish body weight |
3. Disease prevention and treatment
Common diseases of crucian carp include bacterial enteritis, saprolegnia, parasitic diseases, etc. Focus on prevention and disinfect water bodies regularly. If sick fish are found to be isolated and treated promptly, the following methods can be used:
| Disease name | Symptoms | Prevention and control methods |
|---|---|---|
| bacterial enteritis | Anal redness and swelling, intestinal congestion | Allicin mixed bait, 0.2g/kg feed |
| saprolegnia | White floc on body surface | Soak in salt, 3% concentration for 10 minutes |
| Parasitic diseases | The fish body becomes thin and rubs against the pond wall | Spray trichlorfon 0.2-0.5ppm in the whole pool |
3. Recent hot topics in breeding
According to the search data on the entire Internet, hot topics in crucian carp breeding in the past 10 days have mainly focused on the following aspects:
1. Ecological breeding model
Ecological breeding models such as crucian carp and rice co-culture and crucian carp and lotus root symbiosis have received widespread attention. This model can not only improve economic benefits, but also improve the ecological environment.
2. Feed substitution research
Researchers are exploring the use of insect protein, microbial protein, etc. to replace traditional fish meal to reduce breeding costs and improve feed utilization.
3. Intelligent breeding equipment
The application of intelligent equipment such as automatic feeding machines and online water quality monitoring systems has greatly improved breeding efficiency and reduced labor costs.
4. Analysis of breeding benefits
| Project | cost | income |
|---|---|---|
| fry | 0.3-0.5 yuan/tail | - |
| feed | About 3 yuan/kg | - |
| Medicines | About 500 yuan/acre | - |
| adult fish | - | 8-12 yuan/jin |
| net profit | - | 3000-5000 yuan/mu |
5. Breeding precautions
1. Choose healthy and high-quality fry to avoid species degradation caused by inbreeding.
2. Adjust the feeding amount according to seasonal changes, reduce feeding in winter and increase feeding in summer.
3. Regularly check the health of fish and detect and handle abnormalities in a timely manner.
4. Keep breeding records, including water quality parameters, feeding amounts, growth conditions, etc., to provide reference for subsequent breeding.
Through scientific and reasonable breeding management, crucian carp breeding can achieve better economic benefits. I hope this article can provide you with valuable reference information to help you achieve high yield and efficiency in crucian carp farming.
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