Originally posted by Auventera Two
If you have immaculate parasite control procedures in place, and have for years and years, and can guarantee that new horses coming in have as well, then likely no need.
But the encysted stages can live for YEARS in the horse. If something triggers there emergence, then if the load is big enough, it CAN cause a very serious problem. That is a VERY valid reason to use one of those 2 rotations - mox of 5-day fen.
Otherwise, if a horse has a large enough encysted population, which doesn't emerge all at once (more or less), then you are looking at years of cyclic, lighter emergence and nutrient-stealing.
It's your choice Really, it IS your choice But there are extremely valid reasons to do ot