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… B+LNZ commitment to the welfare of sheep and beef cattle …

… conditions. Know your foe From a mouthful of larvae to egg-laying adults Adult roundworms live inside the gut of your sheep and cattle.  They enter as L3 larvae, mature through a final larval stage (L4), become adults and get mating.  … than worms inside healthy adult animals.  … Female Cooperia oncophora releasing eggs: Photo C. Sauermann From eggs in poo to the next round of larvae The time from when eggs are laid by the female worm, to when they pass out in dung, can be … of grass, bringing them closer to your animals’ mouths.   You’ll find most L3 larvae in the first 2.5 cm of pasture (sheep pasture).  Another good rule is ‘in the bottom 1/3rd of the sward’, for cattle pasture or other forage types. Some …