
06/05/05, 06:31 AM
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Join Date: Nov 2004
Location: New Zealand
Posts: 2,558
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Hi JR,
I drench all my stock - sheep, cattle and pigs - two to four weeks before they are due to start birthing. To the best of my knowledge there is no drench that will have a detrimental affect on the foetus. I can't recommend a drench as although the ones we use here are the same as what you can obtain, they often come under different trade names so it just becomes confusing. However Ivomec is universal and very good so that could be a good place to start.
I can't comment on the alfalfa hay as we have very little of it over here but under the circumstances I should think grass hay would be the better way to go anyway.
Christine, some drenches have a milk withholding period which mainly means that if you a milking commercially, the milk should not go into the vat for collection. However, there are now some very good drenches on the market with a nil withholding period so shop around and see what you come up with.
Cheers,
Ronnie
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