ADSC 3600 Lecture Notes - Lecture 15: Penicillin, Sucking Louse, Antibody
24 Apr 2017
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Most of worms are in pasture (90%: 10% in cow aka host. *when you deworm cattle, you want to worm them around january-march. Spring: lots of worms because it"s warm/wet: see a big spike in worms because it"s great conditions for worms. July: decrease in worms because it gets super hot: pasture load drops, but the cattle are already infected. Pasture rotation: if pasture isn"t infected, the cow won"t get infected since the worms come from the pasture. They like darker animals better and bulls better. Life span of 2-3 weeks: female fly lays eggs in fresh manure until mature fly emerges. Control it by feeding a feed additive to keep the eggs from hatching out, etc. (blocks, minerals, etc. ), pour on treatment, back rugs, insecticide cattle ear tags (you can create resistance easily) If you control horn flies, then you"re probably controlling all the others too.
