Q1: What are the sources of ammonia gas in piggery?
Answer:
(1) Ammonia gas in the gastrointestinal tract of pigs comes from feces, urine, gastrointestinal digestion, etc.
(2) Ammonia in the environment of piggery is generated by the corruption of organic matter such as accumulated feces and urine and food residues. Ammonia gas is produced faster under the condition of humidity, suitable ph, high temperature and much feces in the house. It has been determined that pigs of 50-80kg produce 6kg of excretion and urine every day, 60% of which is urea or ammonium salts that can be easily converted into ammonia.
Q2. Hazards of ammonia emissions from livestock farms:
Answer:
(1) Part of ammonia gas produced by livestock farms is volatilized into the atmosphere, which will form acid rain and harm crops in serious cases. Most of it will become nitrate and infiltrate into underground or surface water, causing pollution.
(2) In piggery, ammonia is often dissolved or adsorbed on the damp ground, walls or external mucosa of pigs, which stimulates mucosal hyperemia and larynx redness; Ammonia enters the respiratory tract, can cause pig cough, tracheitis and bronchitis, edema bleeding, dyspnea, asphyxia, and other symptoms. Pigs exposed to the high concentration of ammonia gas for a long time may become weaker and more susceptible to some diseases, and their feed intake, daily gain and performance will decrease to a certain extent.
(3) Ammonia gas is also very harmful to farmers. Can irritate eyes, soft tissue, respiratory tract, etc.
Q3. Role of Yucca extract in pig raising process:
Answer:
(1) The effective components of yucca extract are yucca saponin and urease inhibitor complex, which can inhibit the generation of nitrogen in feces, improve the decomposition rate of organic matter, reduce the concentration of ammonia in the air of livestock and poultry houses, and achieve the effect of deodorization.
(2) Yucca extract can improve weight gain rate and feed conversion rate of finishing pigs. Yucca extract can help microorganisms to use ammonia to form microbial protein, increasing the utilization rate of ammonia, thus reducing ammonia concentration.
(3) Yucca extract can prevent nitrification of nitrogen in feces and urine and make nitrogen exist in inorganic form, thus reducing the amount of ammonia emitted into the atmosphere.
(4) Yucca extract has the ability to directly bind ammonia and has a strong adsorption capacity to ammonia gas, reducing ammonia emissions. Adding yucca extract into pig feed can improve the environment of piggery and reduce the pollution of pig farm to the surrounding environment.
