First, the cage structure and settings
The closed double-layer polyethylene cage is used, the cover is single-layer, the specification is 5 meters, 5 meters, 2.5 meters, and the head is 3 centimeters. It is made of 33 polyethylene threads and a bamboo frame. Choose a bay setting that is leeward and sunny, and the water depth at the lower box requires more than 5 meters. It is better to have a small amount of plants in the waters of the head of aquaculture group. Otherwise, we must consider the matching of grass. The main cable of the fixed cage is a 16 mm polyethylene rope, one end is fixed on the shore, one end is fixed with an iron anchor weighing 50 kg, and the new cage must be soaked for one week before the fish enters the box.
Second, fish species launch
Each 25 square meters of cages put 150-200 kg of fingerlings, ie 6-8 kg per square meter. The second-generation bream fish species that are produced in ponds or cages for fish seed boxes are sized to 14-20 tails/kg. For example, fish species can be fed with fish cages, and 200 fish/kg can be stocked at the beginning of the year. After one year of breeding, they can meet the box specifications. It is better to go into winter through the month of January. You can also concentrate the fish species in several boxes over the winter to facilitate management. In the second year of March, you can divide the boxes. When the boxes are divided, use 4-5 ounces of salt water or 10 pmm peacock. Shi green for body surface disinfection.
Third, feeding and management
Feeding is mainly based on pelleted feed, supplemented by green feed, and a combination of refined and green technologies to achieve nutritional complementarity. Specific requirements to do the following.
Pellet Feed Formula: Taking into account the nutritional requirements of fish, a crude protein content of 25-27% is planned and inorganic salts and multidimensional additives are used. In the different stages of fish growth, local adjustments are made. The reference formulas are: fish meal 3-5%, vegetable cake 35-37%, bean cake 8-12%, sesame cake 3-6%, wheat bran and rice bran 26-30% , 3-70% 8-19%, 4-70% powder, additives 1-2%.
Particle feed particle size: The particle size is related to the palatability of the fish. The head of the fish head is smaller than the mouth of the eel, and it starts to feed the feed with a particle size of 1.5-2 mm. With the growth of the fish, it gradually increases to 3.5 mm.
Feeding and acclimation: Sunny in winter, good sunshine at noon, can be fed as appropriate. The fish species provided in ponds begin to acclimate around 10°C in March. When they are fed, they first knock on the boat to make noises and feed them to form conditioned reflexes. Normally, the fish can be domesticated to the level of floating foods for 1 week. The more dense the more easily domesticated, the younger the easier it is to domesticate. Feeding times: 3 to 4 times per day, 3 times per day in May, 4 times per day in June, 5 to 6 times per day in July and August, 4-5 times per day in September, and 3-4 times per day in October. November 1-2 times a day, pay attention to the observation of the fish when feeding, adhere to the principle of slow-fast-slow, began to spread a few, until the fish floated after feeding to speed up feed feeding, when part of the fish sinking After slowly slowing down, stopped.
Feeding amount: The speed and amount of food consumed by the head bream are not equal to that of the squid. The feeding principle is to feed the fish. According to actual observation, the feeding rate of the granule feed at the peak of the growth of the squid can reach 5.5% on a daily basis. It is about 3.5%. The monthly distribution of feed is roughly 1% in January-May, 3.5% in May, 7% in June, 13% in July, 2.59% in August, 28.5% in September, 15% in October, and 2.5% in November. However, according to the fish's food and weather conditions, and the weather is constantly adjusted, it is necessary to cast less clouds on cloudy days, and do not feed too much on the last time in the afternoon. Feeding green feed can complement the pellet feed in nutrition. Valerian, duckweed, Vallisneria, Potamogeton edulis, ryegrass, sudangrass, lettuce leaves, lettuce, and cabbage leaves are the green fodder that is eaten by the head lice. In the east of Gansu Province, lettuce leaves, lettuce leaves, and ryegrass are commonly fed, and barnyardgrass and tender grasses are planted from May to July, and valerian, eyefuls, lettuce, and sudangrass are planted in July and October. Especially Vallisneria, feeding for a long time, good palatability, high nutritional value. The daily feeding rate accounts for about 10% of the fish's weight, and more places can be invested where conditions permit to reduce costs.
Fourth, fish disease prevention
The head locust is a species with stronger resistance to disease. According to the test, the resistance to water mildew is stronger than that of squid. Under the same management level of cage culture, the survival rate of scorpionhead lice is 25% higher than that of grass carp, and the survival rate can be as high as above 95. However, in the case of high-density culture of cages, the disease will continue to develop, mainly due to bacterial gill fins and bacterial erythroderma. The main symptom is that the diseased fish looks like the dorsal fin spines when swimming in the water. Extending backwards, fish on both sides of the white, picked up the fins rot decay, fin base congestion, fish on both sides of the scales off, rot. External use of fish health or excellent chlorine net bags, 20-40 grams per box each time, even hanging for 3 days, internal medicine bait 4-6 days, bait processing method for each 50 kg of feed plus furazolidone 30-40 grams, soil 25-30 grams of bacillus, a fish disease cured after 1 week. In the prevention and treatment of fish diseases, the principle of prevention and treatment should be implemented. Fish should be cleared when entering the tank, and baits should be injected once every 15 to 20 days during the growth period. Can not be fed moldy feed, otherwise it will cause fish to die.
V. Daily management
Generally, each worker can manage 8 cages. Cage cages do not need to brush cages, daily management work is mainly on time feeding, fishing for grass, pay attention to observe the fish's activities, to prevent the box broken fish escape, anti-theft. Fish have a greater harm to cage fish culture. Large fish can escape the fish cage through the cage, especially when it rains and rises. The head lice head lice still maintain a certain food intake and growth rate in November, and still have to strengthen feeding and management in the later period.
Plant-based protein powders are our hot selling products which can be widely used in sports nutrition and health&wellness fields. Among protein powder from different plant sources, rice protein, pea protein, sunflower seeds protein, pumpkin seeds protein is suitable for making protein bars, protein shakes. Take plant protein as subsititute of animal protein could reduce the risk of getting heart diseases, plant protein contain more fiber and do not contain less healthy compounds found in meat including saturated fat and cholesterol, plant protien are safe and vegan friendly choice.
Plant Protein,Protein Powder,Plant-Based Protein,Rice Protein
YT(Xi'an) Biochem Co., Ltd. , https://www.ytlinkherb.com