Grass carp aquaculture is a common breeding program in many areas, but grass carp itself is more disease, ponds are more prone to outbreaks of epidemics. So grass carp farming is still a certain technical requirements, the following we understand what kind of pond conditions grass carp need, where the key to pond grass carp aquaculture technology.

First, the pond conditions of grass carp farming

1, pond conditions

Requirements for ponds away from sources of pollution, an area of 5 to 10 acres, the bottom of the pond is flat, the substrate is best for the loam, a little seepage is preferred, the substrate of 10 to 20 centimeters, the depth of water is about 2 meters. Each pond should be equipped with a 3-kilowatt impeller aerator, a 4-inch pump for timely water changes and oxygenation.

2, clean and disinfect

Grass carp itself is more disease, the pond is more likely to outbreak of epidemic disease. At the same time, eliminating stray fish is an important measure to ensure normal feeding of grass carp and saving feed. Specific practice is in the dry pond situation (water 5 ~ 10 cm) mu with lime 100 kg slurry sprinkler, or mu with bleach 10 kg of warm water after dissolving the whole pond sprinkler, so as not to leave a dead corner of the dead surface, thoroughly kill disease-causing bacteria.

3, water quality requirements

pond water quality requirements ph value of 7.5 ~ 8.5, breeding season (June to September) pool water transparency to maintain about 30 cm, organic oxygen consumption of 18 ~ 20 mg / liter.

Second, the grass carp fry stocking requirements

1, fry selection

Grass carp species should be selected body color golden, the appearance of no injury, lively and robust, weighing about 100 grams of individuals. At the same time, due to the grass carp hemorrhage, enteritis, two major diseases are easy to infect the current year fish species, in the selection of fry should be 2-year-old fry is better.

2, fish stocking

Grass carp species are generally stocked mu 800 ~ 1000, with individual specifications for 250 grams to 500 grams of silver carp species 100 tails, do not match or less with carp, to avoid grabbing food with grass carp. In addition, before the fish species into the pool, should pay attention to the body surface disinfection.

1, 50% straw, 25% rice bran, 25% soybean cake, per 100 kilograms of the above mixture of another 10 kilograms of flour scraps as a binder, the crude protein content of 23.35% of the feed, bait coefficient of 2.8, feeding specifications of about 0.05 kilograms per tail.

2, straw 50%, rice bran 22.5%, bran 5%, soybean cake 15%, fishmeal 5%, bone meal 1%, salt 0.5%, vitamin additives 1%, the crude protein content of the feed 18.78%, feed coefficient of 2.4.

3, 30% flour, rice bran 8%, bran 38%, soybean cake 10%, 10% fishmeal, yeast 2%, premix 2%, feed coefficient 1.9, such as another feed green fodder feed coefficient of 2.2.

4, 30% flour, fishmeal 10%, 15% soybean cake flour, bran 25%, rice bran 20%, in the total amount of basic rations under the premise of the same, according to the actual situation can be added to another sweet potato flour 12%, salt 0.5%, growth factor 2%, 2% calcium phosphate, feed coefficient of 4.8.