How to disinfect a sheep farm? Detailed explanation of disinfection measures for each step

The purpose of disinfecting a sheep farm is to eliminate pathogenic microorganisms spread by the source of infection into the external environment, cut off the route of transmission, and stop the disease from continuing to spread. A sheep farm should establish a practical disinfection system and regularly disinfect the ground soil, manure, sewage, skin and hair of the sheep shed, etc.

Sheep shed

In addition to keeping the sheep shed dry, ventilated, warm in winter and cool in summer, disinfection should also be done regularly. It is generally carried out in two steps: the first step is mechanical cleaning; the second step is using disinfectant solution. The sheep shed and exercise yard should be disinfected once a week. The entire sheep shed can be disinfected with 2%-4% sodium hydroxide or with Baidusha at 1:1800-3000 for disinfection with sheep present.

Entry

A sheep farm should have a disinfection room, with ultraviolet lamps on both sides and the ceiling, and a disinfection pool on the floor, with burlap pieces or straw mats soaked in 4% sodium hydroxide solution. Entering personnel should change shoes, wear special work clothes, and register properly.

A disinfection pool should be set up at the main gate, frequently sprayed with 4% sodium hydroxide solution or 3% peracetic acid, etc. The disinfection method is to put the disinfectant solution into a sprayer, spray the ceiling, walls, and floor, then open the doors and windows for ventilation, and scrub the feed troughs and tools with clean water to remove the smell of the disinfectant. If the sheep shed can be sealed and there are no sheep inside, the doors and windows can be closed and formalin fumigation can be used for 12 hours to 24 hours, then open the windows for ventilation for 24 hours. The amount of formalin used is 25 ml to 50 ml per cubic meter of space, with an equal amount of water added, and heated to evaporate. Under normal circumstances, the sheep shed is disinfected once a week, and major disinfection is carried out 2 more times each year. For the delivery room, disinfection is carried out once before lambing, multiple times during the peak of lambing, and once more after lambing ends. At the entrances and exits of sick sheep sheds and isolation sheds, burlap pieces or straw mats soaked in 4% sodium hydroxide solution should be placed to prevent the spread of pathogens.

Ground

The soil surface can be treated with 10% bleaching powder solution, 4% formalin or 10% sodium hydroxide solution. The place where the carcasses of sheep that died from infectious diseases caused by spore-forming bacilli (such as anthrax) have been kept should be strictly disinfected. First spray the ground with the above bleaching powder solution, then dig up the surface soil to about 30 cm, sprinkle dry bleaching powder and mix it with the soil, and properly transport this surface soil out for burial.

Manure

There are many methods for disinfecting sheep manure. The most practical method is biological heat disinfection, that is, setting up a manure yard 100 m to 200 m away from the sheep farm, piling up the sheep manure, spraying a small amount of water, covering it tightly with wet mud, and stacking it to ferment for more than 30 days, after which it can be used as fertilizer.

Sewage

The most commonly used method is to lead the sewage into a treatment tank and add chemicals (such as bleaching powder or other chlorine preparations) for disinfection. The amount used depends on the volume of sewage; generally 2 g to 5 g of bleaching powder is used per 1 liter of sewage.