Atlantic gingival breeding technology (below)

Six, breeding methods 1. Indoor pool culture. At present, domestic aquaculture systems such as brown gingivae, turbot, and oriental can be used to breed this fish. 2. Pond culture. Because the Atlantic gingiva has strong stress resistance and is more adaptable to the environment than brown gingiva, it is possible to make full use of the discharge water of cultured turbot and to use backyard water in outdoor ponds to make use of the cultured Atlantic gum; it can also be used. Sea cucumber breeding ponds are mixed with them. 3. Cage culture. Since the gingiva is a benthic fish, it needs a stable habitat, so the bottom should be specially treated and made. You can use the current guillotine-sea form cages or sink-bottom cages. In the north of the Atlantic Ocean, the gingiva generally do not live through winter. The natural water temperature is lower than 2.1°C and the survival rate is very low. VII. Aquaculture management 1. Water quality. Can refer to China's brown carp and turbot. According to the study, Atlantic Oxygen consumed significantly less oxygen than brown gingiva and turbot, and individuals above 10 cm have stronger tolerance to turbidity conditions. Therefore, during the process of industrialized aquaculture in the Atlantic Ocean, the amount of commutation water It is not necessary to be as large as the brown gingivae and turbot, as long as the dissolved oxygen in the aquaculture water is >3.0 mg/l; the daily water exchange volume should be considered in light of the culture conditions and the culture density. 2. Feeding. In the early stage, the microcapsule compound feed is mainly fed 6-8 times per day, and the granular compound feed is added in the late stage, 2 or 3 times per day, and the feeding time is longer for 0.5 hour each time to ensure the feeding and no residual baits. Fresh fish, shrimp, etc. can also be fed. The feeding time should be mainly from 8:00 to 9:00 in the morning, and supplemented from 6:00 to 8:00 in the evening. The feeding of the Atlantic gingiva is fiercer than that of the brown fangs, and feeding on the food at the end of the fall. If eating, disturbing or drastic changes in water temperature occur soon after the food is eaten, it will cause a "vomiting" type of spit-eating reaction. Therefore, attention should not be paid to pooling, catching, or biological measurement within 6 hours after ingestion. 3. Sorting. Periodically size screening and grading, especially when the full-length fish fry before 10 cm have mutual residual habits, individual differences can lead to increased residual food. Fish of the same specifications can be fed precisely, with better growth, high survival rate and high bait conversion. 4. Disease prevention and control. Atlantic salmon ponds develop ulcers and wear, and chin ulcers are common and require attention. In concrete pools and glass steel tanks, ulcers on the lower side are rare unless unconventional treatment. Other diseases are referenced for reference in the prevention and treatment of other salmon diseases.

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