Treating Gapeworms with Safe-guard in Poultry

[Ceebee123]

The only way of diagnosing gapeworm is to get a fecal float performed by a vet on droppings to check for the worm larvae, or by cutting the trachea (windpipe) open after death. Then you can see the red Y-shaped worms where 2 worms form a Y. SafeGuard Liquid Goat Wormer is given 0.25 ml (1/4 ml) per pound of weight for 5 consecutive days for treatment. Also need to remove the intermediate host for the worms.
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What is removing the intermediate host mean?