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  1. Meaning of Animal Health Management
  2. Meaning of Disease
  3. Causal Organisms of Animal Diseases
  4. Predisposing Factors to Diseases
  5. Signs of Infections in Animals
  6. Reactions of Animals to Pathogenic Attacks
  7. Economic Importance of Diseases
  8. Selected Diseases of Farm Animals - Affected Animals; Causal Organisms; Mode of Transmission; Symptoms; Prevention/Control
  9. General Prevention of Livestock Diseases

Meaning of Animal Health Management

Animal health management deals with monitoring the health status of the animals on the farm. It is apparent that a healthy animal will be productive while unhealthy animal apart from not been productive becomes a liability as money would be spent for their treatment. Besides, there is a high risk of transferring the infections to other animals.  

Meaning of Disease

A disease condition is a deviation from normal functioning state of the animal’s body which comprises of different components working in unity. In a nutshell, disease is any condition in which there is departure from the normal functioning of the system of the animal’s body.  

Causal Organisms of Animal Diseases

The causal organisms of animal diseases are classified as follow:

1. Pathogenic organisms/factors

These are;
  • Bacteria
  • Virus
  • Fungi
  • Protozoa
  • Nematodes
  • Parasites

2. Non-pathogenic factors

These are factors like;
  • Nutritional deficiency
  • Inanimate objects like chemicals, environmental conditions (extreme cold or heat)


They cause diseases by secretion of toxins. Diseases are infectious and contagious. They are transmitted by air, water and animals inform of spores. Examples of bacteria diseases are contagious abortion, anthrax, mastitis, T.B, fowl pox, cow pox, etc.

Lesson tags: Agricultural Science Lesson Notes, Agricultural Science Objective Questions, SS3 Agricultural Science, SS3 Agricultural Science Evaluation Questions, SS3 Agricultural Science Evaluation Questions First Term, SS3 Agricultural Science First Term, SS3 Agricultural Science Objective Questions, SS3 Agricultural Science Objective Questions First Term
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