By Lauren Williams / ASAS Communications
Photo submitter, Susan Schoenian, writes, “Sheep and lambs require periodic treatment to control parasites, especially those on pasture. Oral dosing (e.g. drenching) as illustrated here is recommended for worms and other internal parasites. Several drugs are commercially available in liquid, paste or bolus formulations. Drug resistance tends to develop less rapidly from oral administration by comparison with other delivery methods. The dose of parasiticide (anthelminthic) is adjusted for the size of the animal and deposited with a syringe-like gun in the back of the mouth to initiate the swallowing reflex.”
This photo can be found in the Animal Science Image Gallery. The gallery is a joint project of the American Society of Animal Science and the National Agricultural Library. Go to the site to see more photos or submit your own.