I always tell people to use this rule of thumb- 1.Deworm the day after kidding always- because the hormones in the doe who just kids sends signals to the parasite larvae sitting dormant in the body to multiply and they do in the hundreds of thousands literally.
This is called Periparturient rise or postparturient rise. It is associated with the changes in the circulating levels of the hormone prolactin which occur in the goat during pregnancy and a decrease in immunoglσbulin secreted at the gut mucosal surface due to the transfer of immunoglobulin in the plasma to the mammary epithelium followed by it's secretion in milk.
* 1.Deworm the day after kidding always
* 2.Deworm the day after you bring a new goat home
* 3.Deworm after you have castrated, disbudded or an injury has occurred
* 4. Deworm any goat during a stressful situation- illness, moving kids away from moms, putting bucklings into a new pen, etc. Stress allows parasites to multiply in huge numbers in the body.
* 5. Deworm the entire herd at the beginning of Spring and at the beginning of Fall using the 10dayx10dayx10day method and then as needed per goat between these scheduled treatments.
Deworming article
threadworm article
hope this helps
goatlady
Goat-Link.com