The fermentation bed chickens are deodorized and hygienic, do not need to clear the excrement, save environmental protection, do not pollute the environment, the provincial labor, the provincial feed, the right choice of regular manufacturers strains, reasonable post-maintenance management, can effectively let the fermentation bed chickens to various farmers Bring more benefits. Kingfisher's dry-leaf-fermenting bed chicken-breeding technology has the advantages of dry-type water-saving and simple operation. With ten years of successful experience and product improvement, Gymboree prompts you to raise the temperature of the chicken house in cold winter and spring seasons. Most farmers have closed their doors and windows to reduce ventilation. In this way, although the temperature inside the house can be kept high, it will often lead to an increase in the ammonia content in the house, causing the occurrence of respiratory diseases in winter and spring, and how to effectively reduce the ammonia concentration and ensure the house inside. The temperature inside is the key.
I. Causes of High Ammonia Concentration
The production of chickens in the fermentation bed is based on the use of bacteria and litter to decompose the feces. Nitrogen in the feces will be directly used by bacteria in the fermentation process to be stored in litter, and another part of the nitrogen source. Ammonia gas will be discharged into the pens with decomposition and fermentation. The sources of ammonia in livestock houses are mainly divided into the following two types: one is the ammonia in the gastrointestinal tract, which is derived from excreta, digestive matter in the stomach, etc. The urine nitrogen is mainly in the form of urea and is easily hydrolyzed by urease. Catalysis Generate ammonia gas and carbon dioxide (every time the animal excretes feces, everyone can smell the pungent smell of ammonia is this reason). Manure nitrogen is mainly organic matter, which is produced by fermentative decomposition of strains to produce some ammonia. The concentration and content of ammonia in livestock houses depend on factors such as temperature, stocking density, ventilation, ground structure, feeding and management, fermentation bed strains, and fermentation bed fermentation conditions. Ammonia is highly soluble in water, so the concentration of ammonia is relatively high in high-humidity air in confined, unventilated housing.
Second, the hazard of ammonia
Ammonia is a poisonous, colorless, and highly irritating odor gas. It can feel the lowest concentration of 8 mg/m3. It is almost unsensible, it has a feeling at 15 mg/m3, and it causes tearing at 38 mg/m3. And nasal congestion, 76 mg/m3 will significantly increase the tears, nose, irritation, burning sensation in the eyes. In winter, pigpen pigpen is not ventilated, the smell of ammonia is too strong and pungent, the environment check, livestock and poultry are easy to get sick. Pollution-free breeding in China GB 18407.3 provisions, field area
It has been reported that the initial concentration of NH3 on livestock and poultry is 25 mg/m3. Normally, when the concentration of ammonia is 10-15 mg/kg, the animal has little effect, but only a slight effect. When the concentration is higher than 40 mg/m3 for a long time, it may cause central nerve palsy, toxic liver disease, heart damage, and death. Different animals have different tolerance to ammonia concentration. Ruminant animals are more tolerant to ammonia than monogastric animals, and pigs are more tolerant than chickens. Chicken chicks are more sensitive to ammonia. In general, the ammonia concentration in the house is required to be controlled below 20 mg/m3, the lower the better.
Third, reducing ammonia measures and methods
For the problem of heavy concentration of ammonia odor, we can select good sites for the construction of chicken houses. In the places with high dry terrain, convenient drainage, and good ventilation, we must maintain cleanliness and hygiene in and around the broiler house during management. The nutritional requirements of chickens are used to formulate full-priced diets to avoid shortages, deficiencies or surpluses of nutrients in diets. Special attention should be paid to the fact that crude protein levels in diets should not be excessively high to reduce nitrogen source emissions. At the same time, we can also adopt the following measures to control Reduce ammonia concentration in the housing:
1. Select a suitable fermentation bed strain. The Jinbao Dry Sausage Bacteria strains are refined by special fermentation techniques. The bacterial structure is relatively balanced and rich in various beneficial bacteria. It can effectively reduce the odor of ammonia, harmful gases and feces, and improve the breeding environment. Improve animal health.
2, diluted with water. For its dry fermentation bed (animals running or moving around if dust), a small amount of water can be sprayed to ensure that there is no dust, water for fermentation, and excess ammonia can be dissolved.
3, control the breeding density. The stocking density in the broiler house should not be too large. Generally, 6-8 eggs per square meter are suitable for the fermentation bed culture.
4, ventilation. Ventilation and ventilation in winter generally require ventilation during the day when the temperature is high, ventilation can be more frequent, time off, combined with regular irregular ventilation. '
5. Add biological agents. Adding appropriate amount of Jinbao in the feed can promote the digestion and utilization of feed protein, reduce the conversion of protein to ammonia and amines, and reduce the excretion of nitrogen in the feces.
6, physical adsorption method. A large concentration of ammonia in a short period of time can suspend some charcoal, activated carbon, coal residue and other adsorbent substances to absorb ammonia in the pens. Or use fresh sawdust to replenish the fermented mattress material.
7, neutralizing inhibition method. We can sprinkle a small amount of sulfur powder on the surface of the fermented mattress material so that the pH value of the fermentation bed can be reduced and neutralized with ammonia gas, and 0.5 kg of sulfur powder per square meter of ground can be used. Or you can use fumigation acetic acid, acetic acid, ammonia can also be neutralized, or sprayed with 2% of benzoic acid or 2% acetic acid, but also play a role in disinfection. Alternatively, sprinkle a layer of superphosphate on the litter of the chicken house to neutralize the ammonia gas to produce an odorless solid ammonium phosphate salt. The amount is generally 0.1 g per square meter. For details, please contact Beijing Huaxia Kangyuan Technology Co., Ltd. on phone number 1810173107 010-62110749.
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