CATDOLL : CATDOLL: Do you know what are the key points in tilapia farming and seedling protection?

1. Do you know what are the key points in tilapia farming and seedling protection?

1. Preparation for pond cleaning

Pond cleaning is to create a suitable living environment for fry. Fry have relatively weak resistance. A good pond environment is conducive to the growth of fry and improve the survival rate. Tilapia ponds are generally earthen ponds, where some wild fish, insects, tadpoles and other harmful organisms and some parasites and pathogens hide. If the pond is not cleaned thoroughly, the fry will be swallowed and diseases will occur frequently, resulting in a low survival rate. Therefore, pond cleaning is crucial in the entire seedling marking process. There are two methods of pond cleaning: dry pond cleaning and pond cleaning with water. Due to conditions, wet pond cleaning is generally adopted here. The specific plan is that 15-20 days before stocking, quicklime can be used with 5-10 cm of water for disinfection, and the general dosage is 40-80 kg/mu. After 2-3 days, use a dense mesh to filter and inject water, and the water depth should be 2 meters.

2. Water cultivation

Cultivating a good pond water is very important and is related to the success rate of stocking. If the water quality is too thin, the water body will lack stability and the bait nutrition required for the growth of fry. At this time, it is recommended to use "Algae Ansheng" to cultivate beneficial algae such as diatoms and green algae; then cultivate bacteria in small quantities and supplement carbon multiple times, and use the "Double Profit" package (1 pack of "Li Miao Duo" + 4 bottles of "Li Jun Duo" + 10 jin of brown sugar + 400 jin of water, ferment for 1-2 days) every two days to improve the carbon-nitrogen ratio of the water body and maintain the stability of the pond organisms.

Note: Do not use large bags of granular organic fertilizer or chemical fertilizer to fertilize the water. Avoid algae growth too fast and single algae phase, which may cause algae overturning, dirty bottom, water change, high pH value, bubble disease, etc.

3. Planting Seedlings

10-15 days after water cultivation, the zooplankton, phytoplankton and microorganisms in the water reach a balance. The typical sign is the appearance of cladocerans in the water. This kind of water is stable, has strong self-purification ability and normal indicators. Now is the best time to stock seedlings.

The stocking density of tilapia should be 20,000 to 30,000 per mu. Ponds with too high a density are prone to lack of bait organisms and are not conducive to insect and disease prevention. The temperature difference between the seedling bag and the pond should not exceed 2°C. Generally, the seedling bag is placed in water and the temperature difference is lower than 2°C before the seedling bag is opened for stocking. Fry can easily be mechanically damaged during operation. After stocking, disinfection with a highly safe and less irritating disinfectant (such as "Yongle Iodine") can reduce the probability of disease in the fry.

4. Feeding and Management

1. Feeding "Libaiduo" You can feed the suspended bait "Libaiduo" from the beginning of stocking. It has an attractant effect, helps the fry to open their mouths and supplement nutrition; it can also cultivate zooplankton, stabilize water and prevent bubble disease, and purify the water body; use it continuously for 7-10 days, the effect of strengthening the fry is outstanding.

2. Use more live bacteria. The "double benefit" package can not only increase the bait for fry, but also supplement the beneficial bacteria in the pond, accelerate material circulation, stabilize the water body, and prevent and control bubble disease.

3. Add more oxygen. Under normal weather conditions, 7-10 days after stocking, the oxygen consumption of the fry increases, which will cause hypoxia and affect the survival rate of the fry. It is recommended to turn on the aerator around 12 o'clock in the evening to prevent hypoxia. Adding more oxygen can also stabilize the water body.

To avoid the harm of disinfectant residues to the fry, check the pond condition before stocking the fry. If you find harmful organisms such as water centipedes, tadpoles, wild fish in the pond, remove them with a net in time to prevent them from attacking or swallowing the stocked fry, which will affect the normal growth of the fry and the economic benefits of breeding. It is generally recommended to stock the fry in the morning or afternoon on a sunny day to avoid direct sunlight at noon and high water temperature. The dissolved oxygen content in the pond water is higher in the morning and evening, and the water temperature of the pond does not change much, which can increase the survival rate of the fry after stocking into the pond.

First, you need to clean the pond, add water to cultivate microorganisms, sterilize, provide more oxygen, put the fish in place and feed them on time.

The first and most important point is that you must control the temperature well so that the fish can grow healthily. The second point is to master the most basic thinking skills. These are all very important. The third point is that you must also pay attention to regularly administering medicines during the breeding process, otherwise there will be diseases and pests.

2. How to pack river tilapia

In barrels

Tilapia is one of the fish species that anglers hate. Although the meat of tilapia is very delicious, wild tilapia reproduce very quickly and the river is full of small fish fry born by tilapia. Although the small tilapia are not big, they are very fierce in grabbing food. The bait will be eaten up by the small tilapia before it reaches the bottom. The float will be pulled everywhere and it is not easy to catch fish even if you lift the rod. Fishermen hate this kind of small tilapia very much.

In fact, the growth rate of farmed tilapia is still very fast. It is not uncommon to see tilapia weighing 3 catties. However, wild tilapia reproduce very quickly, but their growth rate is much slower. Perhaps it is because there is not enough food in the wild waters for tilapia to grow quickly. Generally, the largest wild tilapia does not exceed 1 catties. Since there are too many small tilapia, the chance of catching a large fish is not high. So how big can tilapia grow in the wild? Once, a fishing friend in Guangxi caught a 20-jin tilapia king. It is said that a pot cannot hold a fish. Many netizens said that this tilapia has become a spirit.

3. There are a lot of wild tilapia. Do you know why?

Tilapia is listed as a high-risk invasive species in my country's Pearl River system. The reason why tilapia is particularly abundant in the waters of southern China has been severely flooded, affecting the living space of other fish and seriously endangering the local ecological environment. Tilapia can be seen almost anywhere there is water. Do you know why wild tilapia are flooded? Major tilapia bites can turn most of the color of the tilapia's body into a single black-gray color. They look a bit like wild crucian carp.

In addition, they grow very fast, eat a lot, and are a little aggressive and fighting. Therefore, your fishermen enjoy the fun of fishing, but wild tilapia is of low quality, of different sizes, and has a low market price. In addition, China does not like to eat tilapia, so it can only feed tilapia because of two reasons. First, tilapia has too strong reproductive capacity; second, tilapia has the fresh meat of tilapia. Farmed tilapia is very popular and has a place in the water market. However, for wild tilapia, many consumers are not cold, and some even dare not eat it.

Why? This also comes from leading wild tilapia. How can there be so many tilapia in Guangdong? I think it is the environment that created tilapia, because tilapia was originally introduced from faraway Africa. Africa is hot, and the Goda tilapia learned this fish. It tastes delicious and has become an important economic fish in China. This fish is the vital African carp, commonly known as tilapia. Many fishermen friends want to know: Why is the important African carpet called tilapia in China? There are many ways. Steaming, frying, and frying can all capture the heart of eating.

The reason for their flooding is that they have a large number of eggs. In the case of flood awareness in the Organization of African Unity and the lack of purchase in some parts of the three countries, it is naturally more delicious than Gao, but it will inevitably fail in the case of tilapia. As for the reason, the main reason is its tenacious survival ability. There is no demon fish of superior quality in the tilapia water, but it is regarded as a treasure by Western countries, a delicacy in the eyes of Americans, and a life-saving treasure in the eyes of South Americans.