The experiment of feeding calves with chicken manure instead of bean cake in the former Soviet Union and the United States proved that dry chicken manure accounted for 20% of the calf's diet and had no adverse effect on calf's weight gain and carcass quality. The digestibility of chicken manure fed to cattle can reach 7.87 mj/kg. Chicken manure can replace part of protein feed in beef cattle diet. Most of them advocate that feed accounts for 10% ~ 25%. The feeding method can be drying, mixed silage of straw, grass, bran or grain, or mixed with other feeds to make granular materials.
Chicken manure has the highest nutritional value in conventional livestock manure. Because the intestine of chicken is too short compared with that of cattle, sheep, geese and pigs, the food stays in the intestine for a short time, so the nutrition in chicken feed can only be absorbed by about one third of it, and most of it is excreted from the rectum, which eventually leads to chicken becoming a "treasure". Chicken manure contains about 28% crude protein, 0/3% pure protein/kloc-and 8% total amino acids, and all kinds of amino acids are relatively balanced. In addition, it is rich in B vitamins and various trace elements. Therefore, chicken manure is a cheap low-energy protein feed. Replacing part of protein feed with chicken manure and supplementing part of energy feed can greatly improve the economic benefits of animal husbandry and aquaculture, reduce pollution, purify the environment and form an ecological industrial chain. Similarly, chicken manure can be fermented into high-grade and high-quality organic fertilizer or further made into organic and inorganic biological formula fertilizer (referred to as biological fertilizer), which brings good economic, ecological and social benefits. For example, each chicken can produce 4 1.4 kg of fresh manure per year, and ten thousand chicken farms can produce 4 14 tons of fresh manure per year, and the fermentable feed can reach 200 tons. If all of them are for personal use, the feed cost can be saved by about 1.6 million yuan. If sold, the economic income can reach 240,000 yuan. The fresh manure is sold directly without fermentation, and the income can only be about 60 thousand yuan. Compared with the two, the economic return of fermentation is obvious. According to incomplete statistics, the annual output of fresh chicken manure in China is about 60 million tons (excluding chicken manure from free-range households), which is equivalent to more than 654.38+0.8 million tons of dry chicken manure. If all of them are used as feed, it can save more than 3 million tons of concentrate such as wheat flour, equivalent to about 3 billion yuan.
How to process chicken manure into fish feed
Source: Questions and Answers on Practical Techniques of Integrated Fish Culture in Pond
Because chicken manure contains more ammonia, it not only smells bad, but also stimulates the gastrointestinal tract of livestock. Chicken manure often contains parasitic eggs and pathogenic bacteria harmful to livestock, so chicken manure must be disinfected and deodorized before feeding livestock. There are four methods: laying fresh chicken manure in the sun to volatilize the smell, and killing parasite eggs and germs with ultraviolet rays; Another method is to stir-fry fresh chicken manure in a large iron pot and deodorize and sterilize it at high temperature. Mixing dried (fried) chicken manure with grain feed for feeding; The third method is to dry fresh chicken manure and mix it into grain feed (or directly mix it), then add feed yeast, put it in a pool, cellar, jar or large nylon bag for sealed fermentation to make fermented feed and feed it. Fourthly, a large amount of chicken manure is baked by mechanical equipment and fermented by chicken manure fermentor.
The reason of fermented chicken manure as feed and the related knowledge of fermented chicken manure as feed.
1. Changing chicken manure into biological feed by anaerobic method After removing impurities from chicken manure in chicken coop, fully mix 35% of chicken manure, 40% of straw powder, 65,438+05% of bran and 65,438+00% of corn flour with the preparation solution of active cellulose decomposing bacteria, so that the water content of the mixture is about 60% (pinch water drops by hand) Then put it into a pre-prepared brick cement pool (which can also be used as a cylinder or barrel), compact it layer by layer, fill it, and it will not leak after soaking. After 3-4 weeks of anaerobic fermentation, a large number of pathogenic bacteria were killed, and chicken manure was transformed into nutritious biological feed. The feed was golden yellow and had the aroma of cider, including crude protein 15%, crude fat 1.8%, nitrogen-free extract 35.2%, crude fiber 14.9%, calcium 7.4% and phosphorus 2. 1%, which not only had good palatability. Livestock, poultry and fish all like to eat it. Organic acids such as volatile fatty acids and lactic acid produced during fermentation can significantly inhibit Shigella and Enterobacter, and improve the disease resistance of livestock and fish. Anaerobic fermented chicken manure feed can also be naturally dried or dried to make granular feed.
Matters needing attention in feeding livestock and poultry fish with fermented chicken manure
1, chicken manure feed has high nutritional value, but it is not a complete feed and cannot be fed alone. When used, chicken manure feed and other feeds should be reasonably prepared into complete feed according to different feeding objects. 2. When feeding with chicken manure feed, it should be gradually increased from less to more, and the dosage should not exceed 40%. Chicken manure feed has high non-protein nitrogen content and high utilization rate for feeding ruminants. Through experiments, fattening cattle can be increased to 35%, pigs to 25% and poultry to 15%. 3. When feeding chicken manure feed, it is better to add antibiotics such as oxytetracycline and edible additives such as salt, baking soda and plaster of Paris. In addition, drugs such as levamisole and trichlorfon should be used regularly to repel insects, generally once a month for poultry and once a month for pigs, cattle and sheep. 4, livestock, poultry, fish on the market for sale half a month ago, must stop feeding chicken manure feed, in case of reducing meat quality.