Lesson Notes By Weeks and Term v4 - SHS 1
HEALTH IS SUES IN ANIMAL PRODUCTION
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HEALTH IS SUES IN ANIMAL PRODUCTION
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Agriculture
Class: SHS 1
Term: 2nd Term
Week: 15
Grade code: 1.4.2.LI.3
Strand code: 4
Sub-strand code: 2
Content standard code: 1.4.2.CS.1
Indicator code: 1.4.2.LI.3
Theme: AGRICULTURE, HEALTH AND ENVIRONMENT
Subtheme: HEALTH IS SUES IN ANIMAL PRODUCTION
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In Ghana, raising animals like chickens, goats, sheep, and cattle is a common and important source of food and income for many families and communities. However, just like people, animals can get sick. When animals are sick, they do not grow well, they do not produce as much (e.g., fewer eggs or less milk), and they can even die. This leads to a significant loss of money for the farmer. The key to preventing these losses is not just about giving medicine, but about creating a clean, safe, and healthy environment for the animals to live in.
This topic revolves around three core ideas that build on each other: Hygiene, Sanitation, and Biosecurity. A. Key Definitions Farm Hygiene: This refers to practices that maintain the health and cleanliness of the animals themselves and their immediate surroundings. Think of it as the "personal care" for the animals and their house. *Example:* Brushing a goat's coat to remove dirt and pests; ensuring the feeding trough is washed before putting in new feed. Farm Sanitation: This is a broader concept. It involves all measures taken to keep the entire farm environment clean and free from disease-causing agents (pathogens). It goes beyond the animal pen to include the whole farm. *Example:* Proper disposal of manure far away from the animal pens; controlling rats and insects across the entire farm property. Biosecurity: This is the highest level of protection. It is a set of preventive measures designed to reduce the risk of disease agents being introduced to, or spreading within, a farm. Biosecurity is like setting up a "border control" for your farm to stop diseases from entering. *Example:* Placing a footbath with disinfectant at the entrance of the farm; quarantining new animals before they are introduced to the main flock.
Analogy: Imagine your school. Hygiene is you washing your hands and keeping your own desk tidy. Sanitation is the school cleaners sweeping the classrooms, washing the toilets, and emptying all the bins. Biosecurity is the school security guard at the gate who checks who is coming in and out to ensure the safety of everyone. B. Essential Farm Hygiene and Sanitation Practices
Here are the practical activities farmers must do to keep their farms clean and animals healthy. Cleaning and Disinfection Cleaning: The physical removal of dirt, dust, manure, and leftover feed from surfaces. This is usually done with soap, water, and a hard brush or shovel. Cleaning must always come before disinfection. You cannot disinfect a dirty surface. Disinfection: The application of chemicals (disinfectants) to kill disease-causing microorganisms like bacteria and viruses. *Ghanaian Context:* Common disinfectants available are Izal, Lysol, or a solution of bleach (chlorine) and water. *Step-by-step Process:* Remove the animals from the pen or house. Scrape and sweep out all manure and old bedding (e.g., wood shavings). Wash the floors, walls, and equipment (feeders, drinkers) with soap and water. Rinse thoroughly with clean water. Allow the surfaces to dry. Apply a disinfectant solution according to the manufacturer's instructions and allow it to dry completely before bringing animals back in. Proper Waste Management Animal waste (manure, droppings) is a major breeding ground for flies and diseases. Regular Removal: Manure should be removed from pens daily or at least several times a week. Safe Disposal: Composting: Heap the manure in a designated pit or pile far away from the animal houses. Covering it helps it to decompose safely through heat, which kills many pathogens. This compost can later be used as an excellent organic fertilizer for crops like maize or vegetables. Burial: For dead animals (carcasses), proper burial is crucial. They should be buried deep (at least 4-6 feet) and covered with lime to speed up decomposition and prevent scavengers from digging them up and spreading diseases. Ventilation Good air circulation is vital, especially in poultry houses. Why it's important: It removes harmful gases like ammonia (from urine and droppings), which can damage the birds' respiratory systems. It reduces heat stress, especially during hot afternoons in Ghana. It brings in fresh oxygen and reduces the concentration of airborne pathogens. How to ensure it: Design pens with large open sides covered with wire mesh. Avoid solid walls that block airflow. Clean Feed and Water Contaminated feed and water are primary ways diseases spread. Water: Provide fresh, clean water daily. Water troughs or drinkers should be scrubbed daily to remove slime (algae). Feed: Store feed (like maize bran or poultry mash) in a dry, secure place off the ground (e.g., on wooden pallets) to protect it from moisture, mould, rats, and weevils. Spilled feed should be cleaned up immediately. Pest and Rodent Control Rats, mice, flies, and external parasites (ticks, lice) are major disease carriers. Rodents: They eat feed, contaminate it with droppings and urine, and can carry diseases like Leptospirosis. Control them by setting traps, keeping the farm surroundings clear of bushes and rubbish where they can hide, and using a farm cat. Flies: They spread bacteria from manure to feed. Control them by keeping the farm clean and managing manure properly. Parasites: Regularly check animals for ticks and lice. Use appropriate chemicals (acaricides) for dipping or spraying, as advised by a veterinary officer. C. Biosecurity Measures: The Farm's Defence System Control Farm Access (Traffic Control) Secure the farm with a fence and a single entry/exit gate. Use a footbath containing a disinfectant at the entrance of the farm and at the entrance of each animal house. Every person must dip their footwear. Limit visitors. If visitors must enter, they should wear protective clothing (overalls and boots) provided by the farm. Keep a logbook to record who comes in and out. Isolate New Animals (Quarantine) Never mix newly bought animals with your existing stock immediately. Keep them in a separate pen (quarantine pen) for at least 2-4 weeks. During this time, observe them for any signs of sickness. You can also use this period to deworm and vaccinate them. If they remain healthy after the quarantine period, they can then join the main herd or flock. "All-In, All-Out" System This is a very effective biosecurity practice, especially for poultry. It means raising only one batch of birds of the same age in a house at a time. When they reach market size, all of them are sold. The house is then thoroughly cleaned, disinfected, and left empty for a period (e.g., 1-2 weeks) before the next batch of day-old chicks is brought in. This "downtime" breaks the cycle of diseases that could pass from an older batch to a younger, more vulnerable batch. Vaccination and Health Programme Work with a veterinarian to create a vaccination schedule for your animals. Vaccination helps the animals build immunity against common deadly diseases (e.g., Newcastle disease in poultry, Pestes des Petits Ruminants (PPR) in goats and sheep). Regularly deworm animals to control internal parasites.
Guided Practice (With Solutions)