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秋季影响猪只健康的因素
呼吸道疾病。进入秋季，为了调节猪舍温度和湿度，通风是很重要的。一方面如果通风不畅，猪舍的有害气体例如氨气、硫化氢等不但难闻，而且有很强的刺激性。对猪眼睛、呼吸道黏膜都有很强的腐蚀性。在这种环境中生存的猪群，出现呼吸道疾病的几率大大提高。另一方面如果通风过大，猪舍进入冷空气易引起仔猪咳嗽等呼吸道疾病。断奶仔猪适宜的湿度为65%~70%。过于潮湿会引起皮炎、疥癣等疾病，过于干燥能引起灰尘增多，诱发喘气病、萎缩性鼻炎等疾病。
秋季仔猪腹泻。从炎热夏天到凉爽秋天，气温下降较大，昼夜温差更是达到10℃，容易引起断奶仔猪的腹泻，影响仔猪的生长。仔猪断奶时体温调节能力尚未完善，需要26℃~28℃的舒适环境温度。
饲料霉变。秋季雨水多，特别是沿海城市，伴随台风天气影响降水较多，所储存饲料时间过长的话容易霉变。霉变的饲料一律停止喂养，防止猪只病变。
猪只受寒。猪只在天黑前后进食过迟、贪食过多、进食后就地睡眠，膨胀的胃内容物经夜间寒冷的侵袭，导致胃内容物的异常发酵会引起猪只发热、感冒。
饲养管理及预防措施
保持空气温度与湿度。在没有气温变化之前就应准备好加温设施，修补栏舍并加强夜间保温工作，做到有备无患，把自然因素造成的损失降到最低。降低猪舍湿度和改善猪舍空气的最好办法是通风换气，而通风换气最有效的措施则是保持栏顶通风设备的正常运转，这样不用开门窗就能尽快将舍内的大量潮气和不良气体排出，并换入新鲜空气。但通风要有节制，晴天、暖天多通风，阴天、冷天少通风，做到通风与保温相协调。
传染性胃肠炎和流行性腹泻是秋季常见的一种传染病。如果提前两个月给仔猪打疫苗，这些猪长大后体内的抗体仍可抵御病原的威胁，就会大大减轻疫病的危害。
断奶前尽早补加教槽料，提高仔猪免疫力。建议在断奶前每头至少补饲600克教槽料，使仔猪在断奶前胃肠消化系统功能得到加强，以适应断奶后采食饲料尤其是植物性饲料。建立对饲料粗蛋白质的免疫耐受性，减少日粮抗原过敏反应。在饲料中使用微生态制剂，可以改善胃肠道环境，预防仔猪腹泻，提高仔猪免疫力和抗病力。
The English version
The factors influencing pig health autumn
Respiratory disease. Enter the autumn, in order to adjust the temperature and humidity piggery, ventilation is very important. If ventilation on one hand, piggery harmful gases such as ammonia, hydrogen sulfide, such as not only bad, and has a strong excitant. To the pig eyes, respiratory tract mucous membrane, has the very strong corrosion resistance. Pigs to survive in this environment, a greatly increased risk of respiratory disease. On the other hand if ventilation is too large, piglet piggery into the cold air is easy to cause cough and other respiratory diseases. Weaning piglets suitable humidity is 65% ~ 70%. Too wet will cause diseases such as dermatitis, itching, too dry dust can cause increased, induce pant disease such as disease, atrophic rhinitis.
The autumn diarrhea piglets. From the hot summer to autumn, cool temperatures is bigger, more than $10 ℃ temperature difference between day and night, easy to cause the diarrhea of weaning piglets, affect the growth of piglets. Piglets weaned thermoregulation ability has not been perfect, need to 26 ℃ ~ comfortable environment temperature 28 ℃.
Feed mildew. Autumn rain much, especially the coastal cities, along with typhoon weather affect precipitation is more, the storage time is too long to feed mildew. Mouldy feed all stop feeding, prevent pig disease.
Pigs get chilled. Pigs eating too late before, during, and after dark, gluttony, after eating too much on the sleep, the expansion of the gastric contents through the cold night, resulting in abnormal gastric contents of fermentation can cause swine fever, a cold.
Management and prevention measures
Keep the air temperature and humidity. Without temperature changes should be ready before heating facilities, repair bar insulation and strengthen the night work, encounter, to minimize the loss caused by natural factors. Reduce the humidity and the best way to improve the piggery air piggery is ventilated take a breath, and ventilation is the most effective measures to keep bar top ventilation equipment normal operation, so that you don't have to open doors and Windows as soon as possible will give up in a large number of moisture and harmful gas discharge, and change into the fresh air. But ventilation to temperate, sunny, warm day more ventilation, cloudy, cold day less ventilation, ventilation and insulation coordination.
Infectious gastroenteritis, epidemic diarrhea is a common infectious disease autumn. If two months in advance to the piglets vaccinated, the pigs grow up antibody in the body can still be threat against pathogens, will greatly reduce the dangers of disease.
Weaned before adding teach slot material as soon as possible, improve piglet immunity. Advice before weaning each supplementary feeding at least 600 grams teach tank material, make before weaning piglets gastrointestinal digestive function is strengthened, so as to adapt to feed especially plant feed intake after weaning. To establish immune tolerance to crude protein feed, reduce the diet antigen allergic reactions. The use of probiotics in feed, can improve the gastrointestinal tract environment, the prevention of diarrhea piglets, improve piglet immunity and disease resistance.
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