Lesson Notes By Weeks and Term v4 - SHS 2
HEALTH ISSUES IN ANIMAL PRODUCTION
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HEALTH ISSUES IN ANIMAL PRODUCTION
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Agriculture
Class: SHS 2
Term: 2nd Term
Week: 9
Grade code: 2.4.2.LI.2
Strand code: 4
Sub-strand code: 2
Content standard code: 2.4.2.CS.1
Indicator code: 2.4.2.LI.2
Theme: AGRICULTURE AND HEALTH
Subtheme: HEALTH ISSUES IN ANIMAL PRODUCTION
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This lesson introduces the critical topic of animal health, which is the cornerstone of successful and profitable livestock and fish farming. In Ghana, where many families depend on backyard poultry, goats, sheep, or small fish ponds for food and income, understanding animal diseases is not just an academic exercise—it is a matter of survival and economic well-being. When animals fall sick, it can lead to financial loss for farmers, a shortage of meat and eggs in our markets, and in some cases, the spread of diseases to humans (zoonoses).
A. Defining Health and Disease Health: A state of complete physical, mental, and social well-being of an animal, not merely the absence of disease or infirmity. In simple terms, a healthy animal is one whose body is functioning normally. It eats well, grows well, and behaves normally for its species. Disease: Any deviation or interruption from the normal structure or function of any body part, organ, or system. It is a condition that impairs the normal functioning of an animal's body. B. Characteristics of Healthy vs. Unhealthy Animals
To identify a disease, a farmer must first know what a healthy animal looks like. This is the first and most important skill in animal health management.
| Feature | Healthy Animal | Unhealthy/Sick Animal | | :--- | :--- | :--- | | Appearance | Alert and responsive. Bright, clear eyes. Smooth, shiny coat or feathers. | Dull, listless, and withdrawn. Droopy ears, sunken or cloudy eyes. Rough, dry, or ruffled coat/feathers. | | Appetite & Thirst | Eats and drinks normally and eagerly. | Loss of appetite (anorexia). Refuses to eat or drink, or does so with difficulty. | | Body Temperature | Normal for its species (e.g., Cattle: 38.5°C, Poultry: 41.5°C). | Elevated temperature (fever) or sometimes lower than normal. | | Faeces (Droppings) | Normal consistency, colour, and odour. | Diarrhoea (watery faeces), sometimes with blood or mucus. Constipation (hard, dry faeces). Abnormal colour (e.g., greenish in poultry). | | Urine | Clear or pale yellow, passed without straining. | Dark, cloudy, or bloody urine. Painful or difficult urination. | | Movement/Posture | Stands firm, walks without difficulty (no limping). Moves with the herd/flock. | Isolates itself from the group. Limping, staggering, or weakness. Lying down excessively. | | Respiration | Breaths are smooth, regular, and quiet. No discharge from the nose. | Laboured or rapid breathing, coughing, sneezing. Nasal discharge (mucus or pus). | | Production | Produces milk, eggs, or gains weight at a normal rate. | Sudden drop in milk yield or egg production. Weight loss. |
Ghanaian Example: A healthy local chicken (`"local fowl"`) in a compound will be actively scratching the ground, have bright eyes, and smooth feathers. A sick one might stand hunched in a corner, with ruffled feathers, closed eyes, and greenish diarrhoea. C. Classification of Animal Diseases