Worming the day after kidding is the common wisdom, but now that I read about the periparturient hormone changes causing the worm to produce a ton of eggs...almost makes you wonder if we shouldn't be thinking of ways to worm the doe just before she kids...to kill the worms before they can produce all those eggs!
The phenomenon itself is called a periparturient rise -- not postparturient rise...peri meaning, "around the time of".. As in, sometime around kidding, but not necessarily before or after. What I read indicated that the hormone related to the rise of FEC was prolactin, which (as the name suggests) is the hormone that stimulates lactation...
That said, a doe could be shedding thousands upon thousands of eggs in the days leading up to kidding.. Wonder if a doe 'bagging up' is an indicator of when the worms are going into overdrive?
I've never understood it as "copper kills worms" so much as "a healthy goat w/ good copper levels, is less likely to be susceptable to a heavy worm load."
Kinda like how the young / weak / old humans get sick when "healthy" adults who eat well / exercise don't, type-thing.
I worm mine 7 days before they kid, and again the day after they kid, IF I know they're one of the "worm-prone" ones.
That's got a lot to do w/ the fact that I milk mine...they don't need ANYthing else pulling them down after giving birth and having to produce milk.
But my way of thinking has always been to worm before they can dump the load, postpartum.
There have been several studies done on using copper oxide wire particles as a straight-up anthelmintic, and the results are always the same...fecal egg counts of barberpoll worms goes way down within just a few days. Every study I've read says it's an effective anthelmintic, but to be careful, and only use it as part of an overall worm plan, blah blah blah.. Makes sense, I guess.
I'm thinking you're right about blood/liver copper too, though.. I think you can probably hit a goat with a little copper and kill some worms right off the bat, but if the goat's copper levels are chronically low, the worms are going to come right back..
What I'm dying to know is how copper kills barberpoll worms..
Something else I'd love to see is a fecal egg count of barberpolls before and after about a week of Red Cell.. Somebody (coughcoughGRIFFENScoughARKcoughcough) should totally step up and volunteer to do that and report back.
Worming does pre-parturition sounds to me like the way to go.. I think we'll probably do that next time around.
I hate counting eggs... Let me see if I can fire up the microscope that hooks to my computer and I will upload the pictures. Oh and here is a link to a doctoral thesis on the effectiveness of cowp on barber pole worms.
I have an autentic case of bottle jaw right now on a Paint Boer. I have thrown the medicine cabinet at him. Now he is going to be served Red Cell twice a day for a week @15ml per feeding. I will follow him around this afternoon and get some goat berries and will attemp to float some eggs later.