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Discussion on Zero eggs shown on fecal
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Member: frances
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Posted on Thursday, Aug 2, 2012 - 2:26 pm:
Hi DrO, Last March we had a fecal egg count done for the first time on about 20 horses, and the results apparently showed that none of them had ANY worm eggs at all. The vet who had organised the fecal felt therefore that we should not deworm for several months, to allow a few worms to accumulate. Fine, but on the other hand, some of us were concerned that the egg count might not have been carried out correctly, and when, 1 or 2 months later, a mare was seen to have a large white worm in her manure,we became concerned and subsequently dewormed again in May to be on the safe side. My question is: how common is it for a FEC on 20 horses to show absolutely zero eggs, and would you suspect that in such a case the eggs had not been kept in the refrigerator and had subsequently hatched?
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Moderator: DrO
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Posted on Monday, Aug 6, 2012 - 7:31 am:
A very good deworming program on horses that have a natural high resistance to parasites might result in no eggs but it would be very unusual in 20 horses. It would have interesting to collect up the worm and see if your vet could identify the critter. DrO
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Member: frances
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Posted on Monday, Aug 6, 2012 - 3:00 pm:
Yes I'm not sure whether that was done. Will ask. Thanks very much for your reply.
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