A Detailed Explanation of General Deworming Procedures on Pig Farms: How to Deworm Pigs

1. Replacement gilts: deworm for internal and external parasites once in the 2nd week after externally sourced pigs enter the farm; deworm for internal and external parasites once before breeding.

2. Adult boars: deworm for internal and external parasites once every six months.

3. Adult sows: deworm for internal and external parasites once 2 weeks before farrowing.

4. Newly purchased piglets: deworm for internal and external parasites once in the 2nd week after entering the farm.

5. Growing-finishing pigs: deworm for internal and external parasites once at 9 weeks of age and once at 6 months of age.

6. Introduced breeding pigs: deworm for internal and external parasites once before use.

7. Deworming and disinfection of pig houses and pig herds:

(1) Spray the breeding boars, sows and replacement pigs once a month to deworm against external parasites.

(2) Deworm the empty house and empty pens once before pigs are moved into the farrowing house, and deworm the sows due to farrow once against external parasites before they are moved onto the farrowing crates.

8. Deworming drugs should be chosen flexibly according to the condition of the pig herd, the properties of the drug, the animals being treated, and other factors.

9. When deworming against internal and external parasites at the same time, the method of mixing dinofen, ivermectin, avermectin, etc. into the feed and feeding continuously for one week is generally used; when deworming only against external parasites, the method of external spraying with acaricides such as Shamanling, Shimanjing, and trichlorfon is generally used.

10. When using the one-meal mixed-feed method to deworm against internal and external parasites, use it again after an interval of 7 days.

11. It is best to improve stomach function in commercial pigs before deworming.