Effects Of Diseases Pests And Parasites
Overview
A dead animal is the loss every farmer notices. It is rarely the biggest one. Long before a disease, pest or parasite kills anything, it has already been quietly stealing growth, milk, eggs and fertility from every animal it touches, and it keeps stealing from the survivors long after the outbreak has passed. A herd that never loses a single animal to worms can still lose a season's profit to them.
In this lesson you will learn exactly what disease costs a farm in production terms, how pests and parasites add costs of their own on top of that, and how a stockman turns these separate effects into one naira figure that tells the true size of the problem. This is the bridge topic for the whole Animal Health section: once you can weigh the damage, every topic that follows on prevention and control will make sense as the way to avoid paying for it.
Objectives
- Explain the effects of diseases on farm animal production
- Explain the effects of pests on farm animal production
- Explain the effects of parasites on farm animal production
- State the economic losses caused by diseases, pests and parasites
- Suggest measures to reduce losses from diseases, pests and parasites
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Effects Of Diseases Pests And Parasites. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which of the following is an effect of disease on farm animal production but NOT typically an effect of a pest? A. Damage to stored feed B. Carcass condemnation at the abattoir C. Gnawing of feed bags D. Contamination of feed with droppings Answer: B
- An organism that lives in or on a host animal and feeds at the host's expense is best described as a: A. Pest B. Parasite C. Pathogen only D. Predator Answer: B
- Heavy tick infestation most directly causes which of the following in cattle? A. Improved feed conversion B. Blood loss and anaemia C. Increased milk fat content D. Faster weight gain Answer: B
- The rejection of a slaughtered animal's meat by a meat inspector because of disease lesions is called: A. Carcass grading B. Carcass condemnation C. Carcass curing D. Carcass dressing Answer: B
- Which statement best explains why disease losses in survivors can exceed the value of animals that die in an outbreak? A. Dead animals are always replaced free of charge B. Surviving animals eat less feed after an outbreak C. Reduced growth, yield and fertility affect the whole surviving group, not just the few that died D. Veterinary costs are only charged for dead animals Answer: C
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