Barracuda crab is a valuable aquatic product widely distributed in coastal areas of China. Because of its delicious meat and rich nutrition, it is deeply loved by consumers. In recent years, with the development of aquaculture, pike crab farming has gradually become an important way for farmers in coastal areas to increase their income. Today, Lao Qiao will talk to you about the growth characteristics of pike crabs, hoping to provide some help to friends.
Barracuda crabs live in coastal shallows, estuaries, harbors and other sedimentary bottom waters, and prefer to inhabit the sediment bottom at a depth of 20-100 meters. Barracuda crabs are nocturnal animals that lurk in the mud and sand during the day and come out to feed at night. They feed mainly on benthic organisms such as small fish, shrimp, snails, mussels, etc., but also prey on their own and small shellfish. Barracuda crabs have a strong sense of territory, will move within a certain range, and will not migrate at will.
1. The growth rate is relatively fast
The growth rate of pike crabs is relatively fast, and it generally takes 2-3 years of growth to reach the market standard. Among them, juvenile crabs weighing less than 50 grams, adult crabs weighing 50-150 grams, and large crabs weighing more than 150 grams. The growth rate of pike crab is affected by various factors such as temperature, water quality, bait, etc., among which water temperature is the main factor affecting the growth of pike crab. Generally speaking, when the water temperature is 18-28, the pike crab grows the fastest.
2. Strong fecundity
Barracuda crabs are more fertile, and the breeding season is spring and autumn every year. After the female crab lays eggs, the male crab transports sperm to the female crab for fertilization, and the fertilized eggs hatch into juvenile crabs. The fecundity of pike crabs is affected by a variety of factors such as water temperature, water quality, and bait. When the water temperature is 20-24, the pidracuda crab is most fertile.
3. Strong disease resistance
Barracuda crab has strong disease resistance, but in the process of breeding, it is still necessary to pay attention to disease prevention and control. Common crab diseases include red leg disease, edema, yellow gill disease, etc. The key to preventing pike crab disease is to keep the water quality clean, feed bait reasonably, and strengthen feeding management.
1. Site selection and construction of breeding sites
When choosing a site for breeding pike crabs, you should choose a place with sufficient water sources, good water quality and convenient transportation. Breeding sites should be built at the confluence of seawater or freshwater and seawater to facilitate the feeding of bait and the capture of pike crabs. The bottom of the breeding site should be paved with fine sand or fine stones to facilitate the pike crab to dig holes and perch.
2. Put seedlings
When stocking seedlings, healthy, active and disease-free pike crab seedlings should be selected. The size of the seed should be determined according to the purpose of cultivation and the density of cultivation. In general, the higher the culture density, the smaller the size of the seed. The time of stocking the seedlings should be in spring and autumn, when the water temperature is suitable and the fecundity of the crab is strong.
3. Feed the bait
The bait of the pike crab mainly includes small fish, shrimp, snails, mussels and other benthic organisms, and can also be fed with compound feed. The amount of bait to be fed should be adjusted according to the growth condition of the crab and the water temperature. Generally speaking, when the water temperature is 18-28, the maximum feeding intake of pike crabs. The time to feed the bait should be in the evening and early morning, when the crabs are more active.
4. Water quality management
Keeping the water clean is key to pike crab farming. Farmers should regularly replace the aquaculture water body to keep the dissolved oxygen content of the water body above 5 milliliters. At the same time, the water quality should be tested regularly, and if the water quality deteriorates, measures should be taken to improve it in time. In addition, it is necessary to prevent predators from invading the breeding site, such as snakes and frogs.
5. Disease prevention and control
In the process of pike crab breeding, the health status of the pike crab should be checked regularly, and the disease should be carried out in time. The methods of disease include drugs**, biology**, etc. When taking drugs, it is necessary to choose drugs that are safe and effective for barracuda crabs, and use them in accordance with the requirements of the instructions. In the case of biology, microbial agents and probiotics can be used to regulate the water quality and enhance the disease resistance of the pike crab.
6. Harvest and sales
After the pike crab is mature, it should be harvested in time. At the time of harvesting, methods such as fishing and trapping can be used. After harvesting, the crabs should be sorted, packaged, and then sold. When selling, take care to maintain the freshness of the pike crab to increase sales**.
In short, pike crab farming has the characteristics of fast growth, strong fecundity, and strong disease resistance. By mastering the living Xi and growth characteristics of pike crabs and adopting scientific breeding technical measures, the breeding efficiency of pike crabs can be effectively improved.
Finally, I hope the content of this section can be helpful to friends, if you have any questions about agriculture, agriculture and agriculture, you can send a private message to Lao Qiao, Lao Qiao will try his best to provide answers and help.
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