CATDOLL : CATDOLL: How many grass carps can be raised in one acre of fish pond, and how long can they be raised before they can be sold?

answer

1. Splash fish fry: 250,000 grass carp fry are stocked per mu, and 20,000 silver carp fry are stocked at the same time. The powder feed is fed at 6% of the daily feeding amount for 5-6 days, and then the small crushed feed is fed at 5% of the daily feeding amount. The total breeding cycle is 16 days. 2. 2-3 cm fish species: 20,000 grass carp fry are stocked per mu, 5,000 silver carp fry are stocked per mu, 3,000 bighead carp fry are stocked per mu, and 5,000 crucian carp fry are stocked per mu. The ratio of expanded feed to sinking feed is 8:2.

1. How many grass carps can be raised in one acre of fish pond?

1. Splash fish fry

The stocking density of grass carp fry is generally 250,000 per mu, and 20,000 silver carp fry can be raised per mu at the same time. The powder feed is fed at a daily feeding rate of 6% for 5-6 days, and then switched to small crushed feed at a daily feeding rate of 5%. The total breeding cycle is 16 days, and the fry can be raised to a size of 2-3 cm per tail of grass carp fry.

2. 2-3 cm fingerlings (cultivate them into 10 cm fingerlings)

(1) The stocking density of grass carp fry is 20,000 per mu, silver carp fry is 5,000 per mu, bighead carp fry is 3,000 per mu, and crucian carp fry is 5,000 per mu. The expanded feed and sinking feed are used in a ratio of 8:2.

(2) The daily feeding amount can be adjusted appropriately according to the weather and the conditions of farmed fish. In March, the daily feeding amount can generally be 1.3%; in April, the daily feeding amount can generally be 1.6%; in May, the daily feeding amount can generally be 1.5%; in June, the daily feeding amount can generally be 2%; in July, the daily feeding amount can generally be 2.3%; in August, the daily feeding amount can generally be 2.5%; in September, the daily feeding amount can generally be 2.6%; in October, the daily feeding amount can generally be 2.8%; in November, the daily feeding amount can generally be 2.2%; and in December, the daily feeding amount can generally be 1.9%.

3. 10 cm fingerlings (cultivate them into 0.1-0.3 catties fingerlings)

(1) 18,000 grass carp, 3,000 silver carp, 2,000 bighead carp and 5,000 crucian carp were released per mu. The expanded feed and sinking feed were used in a ratio of 8:2.

(2) The daily feeding amount can be adjusted appropriately according to the weather and the conditions of farmed fish. In March, the daily feeding amount can generally be 1.3%; in April, the daily feeding amount can generally be 1.5%; in May, the daily feeding amount can generally be 1.4%; in June, the daily feeding amount can generally be 1.8%; in July, the daily feeding amount can generally be 2%; in August, the daily feeding amount can generally be 2.2%; in September, the daily feeding amount can generally be 2.3%; in October, the daily feeding amount can generally be 2.5%; in November, the daily feeding amount can generally be 2%; in December, the daily feeding amount can generally be 1.6%.

4. 10 cm fingerlings (cultivate them into 0.2-0.5 catties fingerlings)

(1) 12,000 grass carp, 3,000 silver carp, 2,000 bighead carp and 5,000 crucian carp are stocked per mu. The expanded feed and sinking feed are used in a ratio of 8:2.

(2) The daily feeding amount can be adjusted appropriately according to the weather and the conditions of farmed fish. In March, the daily feeding amount can generally be 1.1%; in April, the daily feeding amount can generally be 1.3%; in May, the daily feeding amount can generally be 1.2%; in June, the daily feeding amount can generally be 1.6%; in July, the daily feeding amount can generally be 1.7%; in August, the daily feeding amount can generally be 1.8%; in September, the daily feeding amount can generally be 1.9%; in October, the daily feeding amount can generally be 2%; in November, the daily feeding amount can generally be 2%; in December, the daily feeding amount can generally be 1.6%.

2. How long does it take for grass carp to be sold?

1. Grass carp breeding cycle

Under scientific pond feeding and management conditions, the breeding cycle of grass carp is usually 2.5-3 years, and it can be put on the market for sale when it reaches the standards for commercial registered fish.

2. How to shorten the breeding cycle of grass carp

(1) Pond management

Choose a pond with sufficient water source, no pollution source upstream, convenient drainage and irrigation, and micro-flow of water all year round as the breeding site. Before stocking, use 7-10 kg of bleaching powder and water per mu to clean the pond and disinfect it.

(2) Planting seedlings early

1 The first season of stocking begins around the Spring Festival, when grass carp is the main fish, with bream, carp, silver carp and bighead carp mixed in appropriately. The stocking density is 600 per acre of pond.

2 The second season of stocking starts after the Dragon Boat Festival (it is more appropriate to stock from the end of April to the beginning of May, and no later than mid-June). At this time, grass carp fingerlings weighing 150-200 grams can be stocked, and the stocking density is 600 per acre of pond.

(3) Scientific feeding

1 Feed grass carp with a special sinking granular feed with a crude protein content of 28-30%. You can also cultivate some red worms to provide natural bait for grass carp.

2 When feeding, the feeding amount should be determined based on the grass carp's feeding habits. It should not be too much or too little. The appropriate feeding amount should be enough for the grass carp to eat all at once and prevent feed accumulation and waste.

3 If you encounter adverse weather such as heat, cold currents, heavy rain, etc., you can reduce the amount of feeding as appropriate.

4 Generally speaking, feed twice a day.

(4) Regulating water quality

1 Water quality is very important for the growth of grass carp. During the breeding period, oxygenation should be carried out regularly every day, and water should be changed regularly. When changing water, drain a small part of the pond water first, and then inject new water.

2 Disinfect the water regularly to improve the quality of the water environment.

(5) Prevention and control of diseases

1 Before stocking the fish, disinfect them with salt water first, and inject them with inactivated vaccines for the "three major bacterial diseases" of grass carp and inactivated vaccines for grass carp hemorrhagic disease.

2 Disinfect regularly to prevent diseases, feed Chinese herbal baits such as Yubingkang once every 10 days or so, and feed 3-5 times in a row, this can achieve the effect of preventing bacterial fish diseases.