How to Prevent Aquaculture Feed Mildew in Summer
1. Control of the quality of feed raw materials Raw materials should be checked on a package basis when entering raw materials, and the water content of the raw materials must be strictly controlled. General requirements of corn, sorghum, rice and other water content should not exceed 14-/o; wheat, sub-powder, bran and other water content should not exceed 3%; bean seed cake, cotton seed cake, rapeseed cake, The moisture content of sunflower kernels, pancakes, peanut cakes, fish meal, bone meal and meat and bone meal should not exceed 12%. 2. Control of moisture and temperature during feed processing During the process of processing aquafeed, it must be operated according to specifications, and after it is completely cooled, it can be bagged, transported and used. Even if the aquatic feed and raw materials meet the requirements for safe moisture, if the package is sealed, the moisture will cause mildew. According to experiments, the use of double-layer polyethylene film packaging feed products can effectively improve the waterproof effect. Under the conditions of 5-32°C and relative humidity of 40%-75%, the feed for safe moisture can be stored for one year and be produced. The bacterial load of toxins, Aspergillus flavus, and Fusarium moniliforme gradually decreased. 3. Strengthen the management of feed ingredients and products The storage facilities for storage facilities in the warehouse shall have the characteristics of no leakage, no humidity, complete doors and windows, sun protection, heat insulation and good ventilation. Improve storage conditions in warehouses, control storage temperature and humidity, and use chemicals to exterminate insects when necessary. Routine management does a good job of sealing the package and cutting off the moisture and oxygen absorption channels, which can effectively prevent mildew. Feed products should be protected from rain and sunlight during transportation. The marketing and storage of feed products should be emphasized to middle marketers and users. Shorten the shelf-life of aquatic feed products and raw materials, and stocks of raw materials should have a proper amount of inventory; however, it should not be purchased in large quantities, and half-month consumption is generally appropriate. The production of products must be strictly enforced by the system of production and sales, and the products should be released within 7-10 days after production, and the product quality guarantee period system should be strictly enforced according to season and species. 4, application of aquatic feed antifungal agent Single anti-mold agent At present, China's production of aquatic feed anti-mildew agent products such as Crereline, Lei Jing net, mold 101, etc., its main components are propionic acid and its salts. Imported feed fungicide products such as Propagyl Salt, Wanlubao, Kejiaba, and Huaihua, if more than 12 rag/kgCt can cause hemoglobin containing antimycin, etc., its main components are also propionic acid The main ingredient of salt is calcium propionate. Other anti-mildew agents include sorbic acid and potassium sorbate, sodium sorbate, calcium sorbate, benzoic acid, sodium benzoate, fumaric acid and fumarate, calcium formate, dehydroacetic acid and sodium dehydroacetate. and many more. In addition to the use of a single type of anti-mold agent, the current development trend of the use of anti-mould agents in the world is to use composite anti-mould agents. They are a variety of organic acid anti-fungal agents, and are formulated in a certain proportion. . This compound anti-mold agent can broaden the scope of antibacterial spectrum and enhance the anti-mold effect. Compound fungicides commonly used in Japan include: I) It consists of 92% seaweed, 4% calcium iodate, and 4% calcium propionate. When used, it is added to the feed at a rate of 8%. This anti-mould agent is not only In addition to the good mold effect, the most important feature is to increase the various trace elements in the seaweed, such as calcium, iron, zinc, iodine, copper, etc., so that the trace elements in feed more abundant; 2) 1 parts of sodium acetate and 2 parts of aldehyde acid Mix, then add 1% sorbic acid to the mixture, stir and dry it well, and add it to the feed at the rate of 1% when used; 3) Mix 1 part of sodium carbonate and 2 parts of aldehyde acid, then add 1% to the mixture. The sorbic acid was well-mixed and dried and was added to the feed in a 1% ratio when used.
In
a hydroponic system, plants are placed in nutrient-enriched water. Mediums such
as gravels, sand or vermiculite can also be used. Thus plants which are placed
in the water absorb the nutrients very easly. When the nutrients from the water
starts finishing , water is recycled or additional nutrients are added.
Greenhouse Garden Hydroponics,Hydroponic Garden,Hydroponic Greenhouse JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.greenhousehydroponic.com