& nbsp; We often attribute respiratory diseases that occur after ventilation to this ventilation, but in fact, it is not the case. Usually, 2-3 days before the weather warms up or clears up are windless days. At this time, if we close the chicken coop tightly, the air inside and outside is not well ventilated, harmful gases in the coop exceed the standard, and pathogenic microorganisms are easily infiltrated into the body, forming a "latent period" of disease. When the weather warms up, ventilation is not gradual, which leads to the occurrence of respiratory diseases. In other words, the windless days before the weather change are the "Black Sunday" of chickens. So ventilation is one of the important issues in chicken feeding and management& nbsp;
& nbsp; The ammonia concentration in the chicken coop should not exceed 10 milligrams per cubic meter, and for adult chickens, it should not exceed 15 milligrams; Hydrogen sulfide should not exceed 2 milligrams for chicks and 10 milligrams for adult chickens; Carbon dioxide not exceeding 1500 milligrams per cubic meter; The dilution factor of the foul odor shall not exceed 70. The field and living areas outside the chicken coop require low levels of the above-mentioned substances; The inhalable particulate matter in the air inside the chicken coop shall not exceed 4 milligrams; The total suspended particulate matter should not exceed 8 milligrams per cubic meter, and the number of microorganisms should be controlled below 250000 per cubic meter. Dust in the air is an important carrier of bacteria. However, in reality, many breeders ignore the physiological and anatomical characteristics of chickens and fail to create favorable environmental conditions for their survival.
& nbsp; Mainly manifested in: improper site selection of chicken farms, unreasonable construction of chicken coops, lack of scientific ventilation systems, lack of emphasis on ventilation, reluctance to ventilate, and inability to ventilate. The chicken farm has low-lying terrain and narrow environment. Some build farms in forests or plant a large number of trees on the farm, which makes it difficult for wind to blow in and harmful gases to be emitted; The spacing between chicken coops is too narrow, the airflow cannot flow well, the window settings are unreasonable, there are no floor windows or skylights, the air cannot form convection, there is no ventilation equipment or the settings are unreasonable; Some people are afraid that their chickens will get cold or frozen and dare not ventilate (don't forget that chickens have feathers on their bodies, which can be regulated by the growth of feathers to adapt to changes in external temperature. There are no chickens that freeze to death, only chickens that die due to poor ventilation); Some people have been afraid of well ropes for ten years due to a ventilation incident and no longer ventilate. All of this causes chickens to live in an environment of hypoxia for years, with gases such as ammonia, hydrogen sulfide, methane, and carbon dioxide severely exceeding the standard. External pathogenic microorganisms not only easily invade the body and cause chicken diseases, but also often have poor ventilation, tissue hypoxia, decreased heart and lung function, insufficient blood oxygen load, and the body is in a pathological state, which cannot produce a good immune response to immunity.
& nbsp; The ammonia concentration in the chicken coop should not exceed 10 milligrams per cubic meter, and for adult chickens, it should not exceed 15 milligrams; Hydrogen sulfide should not exceed 2 milligrams for chicks and 10 milligrams for adult chickens; Carbon dioxide not exceeding 1500 milligrams per cubic meter; The dilution factor of the foul odor shall not exceed 70. The field and living areas outside the chicken coop require low levels of the above-mentioned substances; The inhalable particulate matter in the air inside the chicken coop shall not exceed 4 milligrams; The total suspended particulate matter should not exceed 8 milligrams per cubic meter, and the number of microorganisms should be controlled below 250000 per cubic meter. Dust in the air is an important carrier of bacteria. However, in reality, many breeders ignore the physiological and anatomical characteristics of chickens and fail to create favorable environmental conditions for their survival.
& nbsp; Mainly manifested in: improper site selection of chicken farms, unreasonable construction of chicken coops, lack of scientific ventilation systems, lack of emphasis on ventilation, reluctance to ventilate, and inability to ventilate. The chicken farm has low-lying terrain and narrow environment. Some build farms in forests or plant a large number of trees on the farm, which makes it difficult for wind to blow in and harmful gases to be emitted; The spacing between chicken coops is too narrow, the airflow cannot flow well, the window settings are unreasonable, there are no floor windows or skylights, the air cannot form convection, there is no ventilation equipment or the settings are unreasonable; Some people are afraid that their chickens will get cold or frozen and dare not ventilate (don't forget that chickens have feathers on their bodies, which can be regulated by the growth of feathers to adapt to changes in external temperature. There are no chickens that freeze to death, only chickens that die due to poor ventilation); Some people have been afraid of well ropes for ten years due to a ventilation incident and no longer ventilate. All of this causes chickens to live in an environment of hypoxia for years, with gases such as ammonia, hydrogen sulfide, methane, and carbon dioxide severely exceeding the standard. External pathogenic microorganisms not only easily invade the body and cause chicken diseases, but also often have poor ventilation, tissue hypoxia, decreased heart and lung function, insufficient blood oxygen load, and the body is in a pathological state, which cannot produce a good immune response to immunity.
