South American white shrimp industrial aquaculture technology
First, aquaculture management
1. Graded breeding and stocking density The industrialized high-density farming adopts the method of grading and rearing. Grading from small seedlings is gradually grading and sparse. Specifically divided into three levels:
The first level: larvae (0.8 cm to 2.5 cm) stocking density 3000/m2.
The second stage: The larvae (2.5 cm to 6 cm) stocking density is 1000/m2.
Third level: The rearing period (6 cm to 12 cm) stocking density is 300/m2 to 500/m2.
Note: When the sub-pool moves, it must be carried with water. 2 The shrimp should not be transported after 6 cm in length to avoid the death of cramps. 3 regulate water quality balance.
2. Seedling selection
The industrialized high-density cultured shrimp species are mainly Penaeus vannamei. Attention should be paid to the purchase of seedlings: 1 Select SP F seedlings. 2 Do not use antibiotics during nursery. 3 Select non-high temperature nursery. 4 shrimp should be neat specifications, transparent and no dirt, strong vitality, body length in the 0.8 cm to 1.2 cm.
3. Preparation before stocking
1 Check whether the various systems such as air supply, water supply, heat supply, power supply and sewage discharge are in normal operation. Potassium permanganate or other disinfectants are used to disinfect culture tanks and reservoirs.
2 First-stage holding tank water injection 60 cm, conditioning water quality indicators to meet the shrimp growth requirements, single cell algae auxin or biological fertilizer cultivation water color, transparency control in about 40 cm.
3 control the water temperature at 26 °C ~ 30 °C, after the proportion of 1.012 ~ 1.018, you can put the seedlings.
4. Feeding management
The shrimp can be fed immediately after going down the pond. The amount of bait should be determined according to the weather, survival rate, amount of residual baits, health status, water quality environment, shelling, medication, etc., and the amount of biological feed.
When the body length is from 0.8 cm to 1.5 cm, it is washed with a 40 mesh to 60 mesh mesh bag, or directly fed with 40 to 60 mesh microcapsule feed. For 6 meals a day, the feed amount for each meal of 10,000 shrimps is 5 grams to 15 grams.
1.5 cm to 2.5 cm, feed 0 feed, 6 meals a day. Each meal feeds 15 grams to 40 grams.
2.4 cm to 3.5 cm, feed No. 1 feed, 6 meals a day. Each meal feeds 40 grams to 100 grams.
3.5 cm to 7.5 cm, feed No. 2 feed, 4 meals a day. Feed 100 grams to 800 grams per 10,000 meals.
When 7.5 cm to 12 cm, feed No. 3, 4 meals a day. Each meal feeds 800 grams to 1500 grams.
Specific grasp can be determined according to the remaining situation of the feed detection network feed should increase or decrease the amount of feeding, generally 1 cm to 5 cm body length shrimp 2 hours to eat, 6 cm to 9 cm shrimp 1.5 hours to eat, 10 cm ~ 12cm shrimp is good for 1 hour.
Spray Adjuvant,Spray Oils Adjuvants,Penetrant And Spray Adjuvant,Crop Oil Adjuvant
Jiangxi Tiansheng New Materials Co.,Ltd , https://www.jxtsxcl.com