CATDOLL : CATDOLL: What kind of feed should be given to tilapia to make it grow faster?

1. What kind of feed should be given to tilapia to make it grow faster?

Tilapia belongs to the family Cichlidae of the order Perciformes. It is a tropical small-to-medium-sized fish with more than 100 species. The fish originated in Africa and later spread to Central America, South America, East Asia, and South Asia. It has now become a worldwide aquaculture target. Tilapia is an omnivorous fish that mainly feeds on plant-based feed. In the juvenile stage, it mainly feeds on plankton. Adult fish have a wide variety of food, such as various algae, tender grass, organic debris, benthic animals and aquatic insects, and can also directly swallow artificial feed. Due to its wide diet, low feed requirements, fast growth, strong adaptability, and few fish diseases, it has also become the main species for freshwater aquaculture in my country. The high-quality male tilapia (Oni fish) introduced here is the offspring of the hybrid of Aurelia tilapia (male) and Nile tilapia (female) introduced from the United States by Academician Xia Dequan of the Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences in 1983. After years of selection and breeding, its male rate has been stably maintained at around 95%, and its growth rate is 20% to 30% faster than that of its parents, with a catch rate of up to 60% to 70%. The breeding technology of this fish is introduced as follows:

1. Basic conditions of the pond

Tilapia (Oni fish) has a strong adaptability to the environment, but poor pond conditions are not conducive to the growth of fish. Therefore, ponds should be built in areas with good water sources, no pollution, convenient water inlet and outlet, and rich in aquatic bait organisms. The area of ​​the pond can range from 1 mu to dozens of mu.

2. Preparation before stocking

1. Clean the pond

Before stocking, old ponds should be drained and exposed to the sun for more than 7 days. During the sun-drying period, the pond edges should be repaired and the embankments reinforced. After the ponds are sun-dried, several small pits should be dug around the ponds, quicklime should be poured into the pits, water should be added to dissolve it, and the lime slurry should be evenly sprinkled into the pond without waiting for it to cool. The amount of quicklime used for pond cleaning is 60 kg/mu to 75 kg/mu, and the quicklime concentration is 225 ppm when cleaning the pond with water.

2. Fertilizer Pond

About 7 days after pond cleaning, when the drug toxicity disappears, add 70 cm to 80 cm of water through a 60-mesh silk screen, apply 300 kg to 400 kg of organic fertilizer per mu, and gradually add water to 1 meter as the water color becomes darker. After the fish are put into the pond, as the water temperature rises and the fish grow, gradually add water to the maximum storage depth of the pond.

3. Fish stocking

Choose fish species with smooth surface, no damage and no disease for stocking. In order to facilitate feeding and management during the growing period, stock fish species with uniform specifications and disinfect them with salt water when stocking. For fish ponds mainly raising tilapia, stock 1,000 wintering fish or 1,000 summer tilapia per mu, and add 200 silver carp and bighead carp of 4 inches each.

Although the male rate of Oni fish is relatively high, it is impossible to reach 100%. In addition, no hormones are used for control during the breeding process. Therefore, after the overwintering fish are raised in the pond for one month, they are likely to give birth. In order to improve the feed utilization rate and obtain more uniform specifications of adult fish leaving the pond, 20 to 30 ferocious fish, such as black snakehead and bigmouth catfish, should be raised per acre in the overwintering fish stocking pond.

4. Feeding and Management

1. Feeding

Two feeding tables are set up in the pond. In the first 10 days after the summer flower fry are put into the pond, no feed is fed because there are a lot of plankton in the pond; the winter fish can be fed on the third day after they are put into the pond. After 10 days of stocking until the fish weigh 100 grams per tail, feed 3 times a day. At the beginning, feed evenly around the pond, and then gradually narrow the feeding range every day and move to the feeding table. After 1 week, the fish will gather at the feeding table to feed. At this time, feed at the fixed point at the feeding table. The feeding time is 8:30, 12:30, and 5:30 every day, and the daily feeding amount is 6% to 8% of the fish body weight; when the fish grow to 100 grams per tail, feed twice a day, at 8:30 and 17:30 every day. The daily feeding amount is 2% to 4% of the fish's body weight. The feeding amount is weighed and recorded by a dedicated person. At the same time, the remaining feed on the feeding table is checked one hour after each feeding, and the feeding amount of each meal is adjusted according to water quality, weather and other conditions. In order to obtain more comprehensive nutrition and keep the oni fish's appetite, it is recommended to buy two or more feeds for cross-feeding.

2. Water quality control

Within 1 week after the fry are released, keep the water level unchanged, then increase the water level by 5 cm every day until the water depth reaches about 150 cm, and then add 10% to 15% new water every 15 to 20 days; keep the transparency at 30 to 25 cm; apply quicklime once every 20 days, with a dosage of 10ppm to 15ppm, so that the pH value of the pond water is always maintained between 7.5 and 8.5; 2 weeks after the fry are released, transplant purple-backed duckweed into the pond, covering 20% ​​of the water surface.

3. Others

Patrol the pond twice a day, morning and evening, to observe whether there is leakage in the pond and the activities of fish. In addition, in special circumstances (such as when it is hot and humid, or when the air pressure is low before rain), add new water or take other measures to increase oxygen.

5. Disease Prevention

Thoroughly clean and disinfect the pond before stocking the fingerlings. Soak the fish in 0.4% salt solution for 10 to 15 minutes before stocking the fish for the winter to kill parasites and bacteria on the fish body and gills. Disinfect the entire pond with 1ppm bleaching powder or an appropriate amount (determined by the pH value of the pond water) of quicklime every month or so. Feed the fish with Chinese herbal medicines such as rhubarb, coptis root, and garlic every 20 days to effectively prevent the occurrence of diseases.

So, it is not easy to make it grow fast.

2. What kind of feed is good for goldfish?

The best is live food, such as red nematodes, which fish love to eat, grow fast, and have bright colors. The second best is the fish food bought from flower and bird fish and insect shops, which is the kind of red and green granules. Finally, millet and rice are also OK, but if you feed feed and grain, you must change the water in time, which will greatly affect the water quality and the color of the fish will not be so bright.

3. Which kind of goldfish feed can help goldfish grow and develop better?

Since I started raising fish, I have used a lot of feed

To sum up here

Some fish lovers say that all feeds are of the same quality, so please take a look.

Yicai 4207 The feed I used for the first time, the particles are smaller, the protein is 42%. 20 yuan a bag, high cost performance

The smell of fish feed is not very strong. I suspect that the fish meal is not enough. The feed is very hard and needs to be soaked before feeding. It has good palatability.

Sinking

Yicai 4806 sinks. Protein content is 48%. This feed is good. The particles are larger than 4207. Still very hard.

It needs to be soaked for more than ten minutes before feeding, otherwise the fish will flip over. I didn't soak it at the beginning, and the fish had bubbles in its stool and digestion was not good.

After soaking in EM, this situation did not occur. Because I did not soak it in water, it is hard to say whether it was the water or EM that worked.

Good palatability 40 per pack

Taiwan Plus No picture

Protein 52%, 48%, and many other types. I use 52%.

The taste is very strong. It feels harder than Yicai. The shelf life is short, only half a year. 35 per pack of 480g

Good palatability

Sanyuan This is just average. It floats. The protein is 35%. It's a little oily.

The palatability is average. Anyway, my fish are used to eating Decai and don’t eat this. Popular products

Personally, I feel that 4207 is much better than this one.

This Aoshen growth feed has 41% protein. There are also maintenance and color enhancement types, but the protein content is lower.

The ingredients are not obvious. They are all in English and I can't understand them. The feed is light green and doesn't smell like fish or shrimp feed. The particles are larger and harder.

Light taste, good palatability, floating

OSI Half floats and half sinks Protein 41% Good palatability Relatively hard Strong fish and shrimp flavor

Decai Red Can Protein 38 Excellent palatability Small feed particles Decai feed has a disadvantage No production date

Decai Green Can Protein 43 Half floats and half sinks Excellent palatability

Well, I did a few experiments.

Sinking: Yicai 4207 4806 Decai Green Can Taiwan Jiajia

Floating: OSI Decai Red Can

All are soaked

Sinking: 4207 4806 Plus the soaking time is longer, the water is not muddy, and it is elastic after soaking

The Decai green can is soaked for one minute and becomes soft and inelastic, but it does not break when squeezed and does not muddy the water

Floating: OSI is harder, but OSI needs to be soaked longer and then it will be more elastic. OSI is between OSI and Decai.

Decai Red Cans absorb water and soften in one minute. No elasticity. No breakage. No muddy water.

My point above is that you get what you pay for. Of course, some fish lovers will say that I am just being psychological, or that the feed I bought is fake. If you have used it, you can communicate with me. If you are not short of money, I strongly recommend Decai, no explanation.