雏鸡饲养对空气的要求：注意做好通风换气工作，适当减小饲养密度。经常保持室内空气新鲜是雏鸡正常生长发育的重要条件之一。通常，大气中的氧气含量约为20%，二氧化碳约含0.03%。氧气是有益气体，二氧化碳是有害气体，鸡在呼吸过程中要吸入氧气，排出二氧化碳。如果育雏室内通风不良，氧气就会逐渐减少，二氧化碳浓度增大，使空气变得污浊起来。育维室内要求二氧化碳的含量不超过015%为宜，当二氧化碳浓度过高时，表明室内空气污浊，对雏鸡的生长发育就有危害。鸡的粪便中还能分解放发出氨气和硫化氢气，鲜粪和湿粪散发量比陈粪和干粪更多。氨气和硫化氢气都是有害气体，而且比二氧化碳的危害更大，特别是氨气在空气中的含量要限制在百万分之十五以下。如果育雏室通风不良等因素使氨气浓度超过百万分之十五至二十则，就会引起雏鸡眼结膜与呼吸道疾病的发生。
为了保持空气新鲜，应该在育雏室设置专门的通风设备，并在育雏过程中注意做好通风换气工作。还要定时清粪，另换垫草，适当减小饲养密度。饲养密度：在育雏阶段是指单位育雏面积上饲养的雏鸡只数。如每平方米育雏只数多了就叫饲养密度大，只数少了货是密度小。总的来说，饲养密度宜小不宜大。密度过大时，不仅室内二氧化碳及氨气、硫化氢等有害气体增加，空气温度增高，垫草潮湿。而且雏鸡活动受到限制，容易发生互啄怒痔。饲喂时雏鸡常因抢食而发生踩伤现象，往往还围食具不足而出现采食不均问题。这样，导致的结果是雏鸡生长发育不良，鸡群不够整齐，常使发病率和死亡率也较高。
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Raising chickens to air requirements: pay attention to work properly ventilated take a breath, reduce the breeding density. Often maintain indoor air fresh bird-flu is normal growth and development one of the important conditions. Usually, atmospheric oxygen content is about 20%, carbon dioxide containing about 0.03%. Oxygen is beneficial, carbon dioxide gas is harmful gas, chicken in the breath process to take in oxygen, emit carbon dioxide. If the brood indoor and ventilated bad, oxygen will gradually reduce the concentration of carbon dioxide, air pollution, increase become up. Yukon d indoor requirements of no more than 015% of the carbon dioxide content for appropriate, when carbon dioxide concentration is too high, show that indoor air pollution to chickling, the growth and development of damage there. The chicken in feces can also points out ammonia and hydrogen sulfide liberation, fresh dung and muck than send out quantity Chen dung and dry muck more. Ammonia gas and hydrogen sulfide is harmful gas, and more harmful than carbon dioxide, especially ammonia in the air to limit the content below fifteen over one million. If the brood chamber ventilation adverse factors make ammonia concentration more than fifteen over one million to 20 is, it would cause respiratory tract of conjunctiva and hatching the happening of the disease. In order to keep the air fresh, should be in the brood chamber set up special ventilation equipment, and pay attention to in the process of the brood in ventilated take a breath. Also timing dung, and another clear mat grass, reduce the breeding density appropriately. Breeding density: brood stage is refers to the unit in the area of feeding bird-flu brood only number. If every square metre only several more brood called breeding density, only less number of goods is density is small. In general, breeding density should not big. Small Density too big when, not only indoor carbon dioxide and hydrogen sulphide ammonia, the harmful gas such as increased, the temperature increases, the air cushion wet grass. And chicks activity is restricted, prone to mutual pecked the anger hemorrhoids. When feeding chickens often for a food and happen on, often also hurt phenomenon around the tableware and appear to gather the food shortage problem uneven. So, the result of chickens is bad, the growth and development of chickens and not enough, often makes the incidence of a disease and mortality is higher also.
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