How many jin can carp usually gain in a year? What kind of feed do you feed? How to raise to be high-yielding?

Carp, Chinese alias carp, carp, Mao Zi, red fish. Usually more habitat in rivers, lakes, reservoirs, ponds, aquatic plants overgrown bottom of the water, mainly to feed on benthos. How much weight does it usually gain in a year? Feed what? How to raise high yield? From Hunan Yueyang carp farmers Su master there learned that this depends on how big carp. When you are very young, you can grow very little. When you are 3-5 years old, you can grow about 2 kilograms a year. When you are older, you will decrease again. It depends on what you are fed.

What do carp feed?

Carp is omnivorous fish, can be leftovers, leftovers, peel, etc., add about 10% of animal viscera, apple snails, maggots pupae, earthworms and other animal feed mixed to make particles to feed. Its feed protein content should reach about 35%, fat 5%--8%. Should adhere to the "four fixed" feeding, generally feeding twice a day, once in the morning and afternoon. Feeding amounts vary depending on water temperature, weather changes and fish intake. Roughly 2%-10% of fish weight, in order to eat within 20- 10 minutes is appropriate.

How can carp be raised in order to produce high yields?

1. Generally, the second age is sexually mature, and some individuals can also mature at the first age. The spawning season varies with the area. All eggs can be laid from March to August (April to June is the peak period), which is the batch spawning type. The spawning ground is mostly in the shallow lake bay or river bend water grass cluster zone, the egg viscosity is very strong, after laying, it firmly adheres to the water grass, the number of eggs varies with age and individual size, 150 - 800 thousand, after the egg is produced, it can hatch and emerge in 4-6 days under the water temperature of 15-20℃.

2. Selection criteria: good body shape, strong activity and no injury, the ratio of body length to body height is 3:1, with typical breed characteristics. Female fish at least 2 winter years old, weight 1.5 kg, male fish 2 winter years old above 1kg is good, the first sexual maturity and senescence of carp, its egg quantity and egg quality are poor, so it is not suitable for parent fish.

3. Breeding: parent fish breeding pond 1-2 mu, water depth 1.2 meters or so, shelter from wind and sun, convenient water injection and drainage, 150-200kg per mu. When artificial breeding, in order to prevent self-mating and spawning, male and female should be separated. Disinfect with lime or bleach before placing.

4, management: strengthen parent carp cultivation, can be fed bean cake, silkworm pupa, fish meal and other high protein feed. In recent years, some manufacturers have developed parent fish feed, which is rich in ve and other vitamins, which can promote development and improve anti-stress ability, and the effect is good. At the same time, attention should be paid to adjusting the water quality in the breeding process, often adding fresh water and maintaining micro-flowing water to stimulate gonad development.

5. The earlier the fry open, the earlier the starting point of growth, the better the growth. Should strive for a smooth transition to feeding with complete feed as soon as possible; pay close attention to the early stage of vigorous feeding fish species (especially add inches to 25-30 time) to grow particularly fast, body length and weight growth are fast, the need for feed is also more, at this time should strengthen feeding, some fishermen this period feed rate more than 10%; feed adhere to the fixed quality, timing, positioning, quantitative "four fixed", according to the fish feeding rhythm to feed.

Attachment: stocking mode of carp breeding

1. The pattern dominated by grass carp or Megalobrama amblycephala: grass carp or Megalobrama amblycephala 60%, carp 15%, silver carp and crucian carp 25%, suitable for areas with good water resources and more forage.

2. The pattern dominated by silver carp was 50%, carp 15%, grass, bream and crucian carp 30%, which was suitable for more fertile water.

3. The main pattern of channel catfish is channel catfish 60%, carp 10%, silver carp and bream 30%.

4. Crucian carp dominated mode: crucian carp 60%, carp 10%, grass carp 10%, silver carp 20%