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Controlling External Parasites. 4-H Veterinary Science Extension Veterinary Medicine Texas AgriLife Extension Service College of Veterinary Medicine and Biomedical Sciences Texas A&M System http://aevm.tamu.edu. Objectives.
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Controlling External Parasites 4-H Veterinary Science Extension Veterinary Medicine Texas AgriLife Extension Service College of Veterinary Medicine and Biomedical Sciences Texas A&M System http://aevm.tamu.edu
Objectives • Describe environmental management practices used to control external parasites • Describe strategic administration of chemicals to control external parasites
Life Cycle of External Parasites Host Entry Exit Environment
Life Cycle of External Parasites Host Contact Contact Host
Life Cycle of External Parasites Environment Attack Host Attack Host Environment
Break Life Cycle of External Parasites • Reduce contamination of environment outside of animal • Environment – nutrition • Environment – sanitation • Manure, mud, water • Host – chemicals • Optimal conditions, positive tests • Environment – chemicals
Reduce suitability of environment inside of animal • Host – nutrition
Increase resistance of animal • Host – nutrition