Two methods for making fish feed by straw
(I) Fermentation by micro-preservation of complex bacteria
Straw micro-storage of fish, the straw by micro-composite fermentation after fermentation into the fish pond, can be used as base fertilizer, but also for top dressing, but also for fish feed, is an effective way to develop the grain-saving fishery.
1. Straw micro-culture liquid preparation: 5 grams of straw micro-complex bacteria can handle wheat straw, straw, corn stalk 1,000 kg or 2000 kg of green feed. Before processing the straw, first pour the micro-organism bacteria into 500 ml of glucose solution with a concentration of 1%, and then place it at a temperature of about 25°C for 1 to 2 hours so that the strains can be compounded and then poured into 1000 to 1500 kg of cleanliness. 0.8% to 1% salt water is uniform.
2. Straw specification and kiln input method: Straw crushed to 3 to 5 cm in length. When entering the kiln, first lay straw 20 to 30 centimeters thick, and then evenly spray the bacteria liquid water. After compaction, lay 20 to 30 centimeters thick straw, and then spray the bacteria hydraulically; until the cellar outlet 30 to 40 Re-seal the cm. If it is not full the same day, it can be covered with plastic film and filled the next day. In the micro-storage of wheat straw or rice straw, a layer of barley flour or bran, rice bran and other concentrates can be laid, with an amount of 5 to provide a certain amount of nutrients for the initial breeding of bacteria, improve the quality of micro-storage.
3. Cellaring method: After full compaction, salt is sprinkled evenly on the uppermost layer with an amount of 250 grams per square meter, covered with a plastic film seal to ensure that the anaerobic state is present in the micro-cellar. During the process of micro-storage of straw, leakage of water leakage is strictly prevented. 20-30 days after cell sealing, the fermentation process can be completed. Straw micro-feeds mainly feed on herbivorous fish.
(B) Through the application of photosynthetic bacteria
Wheat stalk, corn stalk and other crop stalks can be made into high-efficiency fish biological feed. The feed has good comprehensive nutrition, and due to its large volume and small specific gravity, it can be suspended in water for about 1 hour, which is good for fish feeding, digestion and absorption. It is an ideal feed for fish and shrimp. In addition, the method of processing the feed is simple, and rich straw resources can be utilized. The production methods, nutrient components, and use effects of the feed are as follows.
1. Production method: (1) Crush the crop straw with a grinder. (2) Put the straw powder into the fermentation tank, add straw powder weight of 80% water, 1% glucose enzyme, 1% compound enzyme, 1% sodium chloride, 0.5% live yeast, 0. The 5% lactic acid bacteria were well-mixed. (3) Access to 3% photosynthetic bacteria, cultured at 15 ~ 35 °C temperature for 2 days. When the layer is covered with white hyphae and emits aroma, a high-efficiency fish biofeed is obtained.
2. Nutrients: The test results showed that it contained 12.31% of crude protein, 4.2% of crude fat, and 19.34% of crude fiber. Among them, the contents of three main amino acids were: lysine 0.68% and methionine 0.16. %, cysteine ​​0.19%.
3. Use effect: Feeding fish and shrimp with high-efficiency fish biofeed has the advantages of high survival rate, less disease, less water change, high yield, and low cost.
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