Fish farming techniques Is it cost effective to raise grass carp with concentrate feeding 5

Totally advantageous. Moreover, the cultivation of grass carp in concentrate is the technology of n years ago. Now grass is still used, the technology is too backward, the time is too long, the use of concentrate can shorten the cultivation time and increase the yield can increase profits.

Our family is now using concentrate, and the feed coefficient of pure concentrate is also about 2, if it is matched with green feed, it can be controlled.

Not cost-effective. As long as there is enough grass to ensure that they are used, they will also grow quickly. There are some benefits to adding concentrates appropriately.

Grass carp mainly feed on aquatic weeds and small fish. When feeding grass carp, remember not to put too much feed at a time, and the speed of each feed can not be too fast, and the grass carp feed can not be too arbitrary, and the quality must be guaranteed, so as to reduce the occurrence of grass carp diseases. When grass carp is in the growth period, small fish can be selected as grass carp food, or a small amount of artificial feed can be added.

Tongwei is not bad. Test whether the water meets the range, ammonia nitrogen, and pH value. If the dead fish can't see anything, they should use insecticidal potions, such as iodine solution for bleeding and rotting skin.

Tongwei, feeding this works very well, and I use this kind of feed as well.

Grass carp begin to eat grass when it is about 5 cm long. Grass carp has a big appetite and loves to eat duckweed, aquatic plants, early-maturing grasses, etc. For every kilogram of grass carp gained, 45 kilograms of townhead aquatic grass or 20 kilograms of early maturing grass are required.

Grass carp has a certain selection of early-maturing grass species, and does not like to eat grass with reticulated stripes (group leaves), but grass with flat stripes (long leaves) prefers to eat. Whether it is early maturing grass or water brigade grass, it is best to eat young grass, because young grass has more protein and less fiber, and grass carp is easy to digest and use.

<> grass carp should be fed regularly, sufficiently and evenly every day, so that the fish can eat, eat well and eat evenly, so as to improve the breeding effect. The amount of food can be adjusted according to the weather, water quality and fish activity. It is strictly forbidden to feed feed that has been stored for too long and has become mildewed to avoid causing fish diseases.

Take an appropriate amount of artificial soybean milk as feed, generally divide it once a day, once in the afternoon, and gradually increase the amount of bait with the growth of the fry. In addition, a large amount of natural bait can be cultivated in fertile water. After about 10 days of farming, some of them have already started to change their diet.

At this time, some flat sand and duckweed should be fed to induce food. Green feed should be clean and fresh, and it should prevent diseases from entering the mouth.

At the same time, the dissolved oxygen in the pond was closely observed. When the hypoxic floating head in the pool is serious, the water should be replenished in time. In the hot weather and sudden thunderstorms, the water in the pool flows, a large amount of residue flows into the water from the bottom of the pool, and the fish reduce or basically stop eating, this situation can easily induce flooding in the pool, and when encountering this situation, immediately inject new water or turn on the oxygen concentrator.

The protein content of the feed is 28-32%, and green feed is added.

Do a detailed explanation of the problem for a detailed interpretation of the problem, I hope it will help you, if you have any questions, you can leave me a message in the comment area, you can comment with me more, if there is something wrong, you can also interact with me more, if you like the author, you can also follow me, the like is the biggest help to me, thank you.

These breeding techniques are, feed feeding breeding technology, machine cherry spike breeding technology, artificial breeding technology, artificial burning machine with the breeding technology spine lack of divination. You can feed some cooked egg yolks, you can feed some water, you can feed some soy milk, you can feed some rotifers, you can feed some ciliates.

The pond should be cleaned and disinfected regularly, and the water quality should be excellent, and the living environment of the grass carp should be paid attention to. Grasp the temperature of the outside world. It is better to choose green fodder.

Choose a better water quality, clean up the garbage regularly, pay attention to the oxygen in the water, and be sure to disinfect regularly. Green fodder is a better choice.

<>1. Pond: The length and width ratio of the pond is 5:3, and the slope ratio of the pond is 1:

The depth of the pond is 15cm of silt at the bottom of the pond, and the water depth is controlled in stocking: before stocking, soak with 3-5% salt solution for 5-10 minutes. 3. Feeding:

The daily feeding rate should not exceed 3, and if it is a cloudy day, reduce the feeding amount appropriately.

1. What technology is needed to breed grass carp?

1. Ponds. (1) The ratio of length to width of the pond is 5:3, the ratio of the slope of the pond is 1:, the depth of the pond is 15cm, and the water depth is controlled at the right and left.

2) Before stocking, drain the water in the pond and then expose it to the sun for several days.

3) After exposure, about 10 days before stocking fingerlings, inject 10-15cm of water, and then use 150-200kg of quicklime per mu of pond to splash the whole pond.

4) About 4 days after the pond is cleared, apply organic fertilizer and cultivate water quality.

2. Stocking. (1) Before stocking, soak in 3-5% salt solution for about 5-10 minutes for disinfection.

2) Each mu pond is stocked with 100-200 grass carp with a size of 800-1000g, 400-500 grass carp with a size of 500g, 700-800 grass carp with a size of 100g, 120-150 silver carp with a size of 50g, 60-70 silver carp with a size of 50g, and 300 crucian carp with a size of 10g.

3. Feeding:(1) Feed concentrate feed (the protein content of concentrate feed is 32% in the early stage, and adjust to 26-28% in the later stage) and green feed, mainly feed green feed in the early stage, and concentrate feed mainly in the later stage, and feed with part of the green feed.

2) From mid-March to May, feed 2-3 times a day. From June to mid-August, feed 3-4 times a day. From mid-August to October, feed 3 times a day.

3) The daily feeding rate should be controlled around and should not exceed 3. If it is a cloudy day, reduce the amount of feeding appropriately.

4. Water bodies. The transparency is controlled at 20-30cm, the oxygen dissolved amount is 5-7mg L, and the pH is controlled.

Second, the grass carp breeding density is more or less appropriate

Grass carp generally adopts a polyculture model with the following densities:

1. Mode 1.

There are 100-200 grass carp with a size of 800-1000g, 400-500 grass carp with a size of 500g, 700-800 grass carp with a size of 100g, 120-150 silver carp with a size of 50g, 60-70 silver carp with a size of 50g, and 300 crucian carp with a size of 10g.

2. Mode 2.

Before and after the Spring Festival, a total of 600 grass carp with a size of 350-400g, 100 silver carp with a specification of 300-400g, 500 bream with a specification of 200-250g, 20 bighead carp with a size of 150-200g, and 100 carp with a specification of 100-150g.