Development & Types of Immunity Model Agricultural Core Curriculum: Supplement University of California, Davis 276.T1 The Body’s First Line of Defense Skin: Covered with hair, feathers. Mucous Coating that traps pathogens. Protects the Membranes: digestive tract and the tissues of the lungs. Gut: Contains acids that destroy pathogens. Cell Wall: Sometimes mucous coated and may contain cilia. Coughing: Rids the body of disease organisms. Urination: Cleans the ureter by washing pathogens out.

Development & Types of Immunity Model Agricultural Core Curriculum: Supplement University of California, Davis 276.T2 The Body’s Second Line of Defense White Blood Cells: Helps fight infection. Lymphatic System: Filters undesirable pathogens out of the body. Liver: Filters blood and detoxifies poisons. Antibodies: Fights off pathogens.

Development & Types of Immunity Model Agricultural Core Curriculum: Supplement University of California, Davis 276.T3 How Diseases Are Spread Direct contact. Contact with non-living objects: fence post, trucks. Infection from soil. Infection from food or water. Airborne infection. Infection from parasites: mosquitos, flies.

Development & Types of Immunity Model Agricultural Core Curriculum: Supplement University of California, Davis 276.T4 Good Management Skills Be alert to signs of ill health. Provide clean, disinfected quarters. Provide adequate ventilation. Provide proper drainage for holding areas, barns. Protect them from the sun.

Development & Types of Immunity Model Agricultural Core Curriculum: Supplement University of California, Davis 276.T5 Practice rigid sanitation & manure removal pocedures. Provide a well balanced diet. Get accurate diagnosis of health problems immediately. Avoid unnecessary stress and strain. Buy disease-free stock from healthy herds and flocks. Good Management Skills, cont’d.

Development & Types of Immunity Model Agricultural Core Curriculum: Supplement University of California, Davis 276.T6 Good Management Skills, cont’d. Isolate new animals for a period of time before introducing them to your herd or flock. Follow a set vaccination program. Be cautious of visitors from other operations. Dispose of dead animals immediately.