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Necessary disinfection for biological safety of dairy cow pasture

Posted on: December 2, 2019, by Victoria

1. Purpose of disinfection
Improve the effectiveness and timeliness of pasture disinfection and epidemic prevention through environmental control.

2. Disinfection equipment
Disinfection vehicle, high-pressure spray gun, knapsack sprayer, hand-carried sprayer, etc.

3. Types of disinfectants
Disinfectants such as sodium hydroxide solution, neogeramine solution, sodium hypochlorite solution, peracetic acid, iodine preparation and so on, are prepared according to the drug instructions (special circumstances can be adjusted appropriately).

dairy cow
dairy cow

4. Doorkeeper disinfection
Construction of vehicle disinfection pooling and personnel disinfection channels (and ensure that 4 ultraviolet lamps are effective and not regularly scrubbed) should be provided with at least two disinfecting facilities such as high-pressure spray guns, knapsack sprayers, and portable sprayers.

The door of the disinfection room should be closed at ordinary times. The entry and exit of workers from outside or from the farm must pass through disinfection passage, which takes 3 minutes to disinfect. The disinfectant solution of the disinfection pad is 2-3% sodium hydroxide solution, which keeps wet every day or has enough disinfectant concentration on the ground. The corresponding handwashing device is equipped with a 0.1% neogeramine solution, which should be replaced periodically every day. In winter, the sodium hydroxide solution should be prevented from freezing.

External personnel must be approved by the pasture managers and carefully disinfected before they can enter the field, and make a good record of visitors. No one is allowed to visit or practice on the pasture without permission. Special permission is required for the admission of outside staff during the key month of epidemic prevention (October-April next year).

The vehicle disinfection pool is 2-3% of the sodium hydroxide solution in summer, which is replaced once every three days and recorded. In winter, antifreeze salts can be added or quicklime spraying can be used instead. The volume of the solution in the vehicle disinfection pool is based on the length of the wheel rolling around. The vehicles that are not in the field will be parked outside the designated area outside the guard area. The vehicles allowed to enter the field must be sterilized by the vehicle disinfection pool. The body is sprayed with disinfectant. The driver's cabin should be sterilized by the sprayer. The driver should get off the car and pass the disinfection room. Pasture staff ride bicycles to work when the guard must get off the bicycles to push and vehicles to park in the shed. Sodium hypochlorite solution is sprayed once a day in the pasture shed. Pasture staff is strictly prohibited from wearing work clothes, shoes and hats out of the pasture.

dairy cow
dairy cow

5. Disinfection of living areas
Maintain clean office, corridor, staff dormitory, and dressing room. Dump garbage at the designated time and clear it regularly. Spray 0.5% peracetic acid once a week to the dressing room, staff dormitory, and office, and disinfect the living area ground with 2-3% sodium hydroxide solution once a week. The canteen should be kept clean and sanitary every day. The tables and chairs should be disinfected with sodium hypochlorite and scrubbed clean. The toilet is cleaned once a day and sprayed with 0.5% peracetic acid.

6. Pasture disinfection passage in pasture production areas
Clothes changing rooms (equipped with ultraviolet sterilizing lamps) and wardrobes should be set up. Workwear, shoes, and hats must be replaced when entering the production area. The entrance of the production area shall be equipped with special equipment for washing water boots. When staff leave the production area and enter the disinfection passage, they shall ensure that water boots are clean. No one shall enter the living area wearing work clothes, shoes and hats.

7. Disinfection of exit and entrance of cowshed
Choose sacks or leftovers, sprinkle sodium hydroxide solution on them, the width is the same as the door of the cowshed.

8. Disinfection of main roads in production areas
Sodium hydroxide solution or peracetic acid solution can be selected, and povidone-iodine or glutaraldehyde can also be used. Car-mounted disinfection equipment should be used for disinfection. In addition to heavy rain and snow, no less than 4 hours of working time should be spent every day.

dairy cow
dairy cow

9. Disinfection of cowshed and cows
Povidone-iodine, glutaraldehyde and other disinfectants were used. After the cowshed dung can be sprayed with quicklime, cows can be disinfected at other times, not less than twice a day. Arrange to clean the cowshed when cows go to milking and disinfect after the cowshed is sanitary and flush as far as possible.

10. Disinfection of calf feeding area
Non-irritant disinfectants should be selected and sodium hydroxide solution or peracetic acid preparation should be prohibited. Quick lime can be selected for drying and disinfection at the bottom of the calf island. No less than two times of disinfection with cows should be carried out in the calf feeding area every day. It is better to arrange for the cleaning and disinfection of the calves after feeding every day.

11. Stadium disinfection
It is forbidden to use a sodium hydroxide solution. Povidone-iodine or glutaraldehyde should be used as non-irritating disinfectants for dairy cows. Except in bad weather (heavy rain and snow), disinfection should be carried out at least once a day. Every stadium should be operated for not less than 10 minutes and dead corners should not appear.

dairy cow
dairy cow

12. Delivery room
The ground uses quicklime, povidone-iodine, glutaraldehyde and other disinfectants for cow disinfection. The cows are disinfected not less than twice a day. At the same time, the focus is on the discharges of the aborted bovine fetus and after birth. In the case of abortion, quicklime should be used to cover and disinfect the cows for the first time.

13. Control of mosquitoes, flies, and rodents
In summer and autumn, mosquito and fly control work should be done well. Each cowshed should be equipped with the necessary mosquito and fly control equipment, and rodent control tools should be put in the safe area outside the cowshed.

14. Milk hall disinfection
Choose disinfectants that do not affect the quality and odor of milk (sodium hydroxide or peracetic acid should not be used). Emphasis should be placed on the disinfection of milking passages, waiting rooms, milking tables, and milking pits. Disinfect at least once a day.

15. Disinfection of sewage ditch in the site area
Use 3-4% sodium hydroxide or 0.5% bleaching powder, disinfect twice a week.

16. Disinfection of dung yard
Quick lime is sprayed around the dungyard to establish the isolation strip. It should be added in time when the passages through the dungyard and cowshed are short.

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