Ectoparasites And Endoparasites

Aperçu

Not every threat to a farm animal comes from a germ too small to see. Some threats are visible, crawling on the skin, and some hide deep inside the animal's own gut. A West African Dwarf goat rubbing itself raw against a fence post has a problem living on its skin. A sheep that eats well but grows thin and pale has a problem living inside its body. Both are parasites, and this lesson teaches you to tell the two kinds apart.

You will meet the ectoparasites that ride on the outside of the host, ticks, lice, mites, fleas and the tsetse fly, and the endoparasites that live within it, roundworms, tapeworms and liver flukes. You will trace how a roundworm completes its life cycle straight through the pasture, and how a liver fluke cannot complete its own without borrowing the body of a snail first. Finally you will learn exactly what damage each group does to the animal it lives on, the specific facts WAEC rewards with marks.

Objectifs

  1. Define ectoparasites and endoparasites
  2. Give examples of ectoparasites of farm animals
  3. Give examples of endoparasites of farm animals
  4. Explain the life cycle of a named endoparasite
  5. State the damage caused by ectoparasites and endoparasites

Note de cours

A herder near Jos notices his goats scratching against trees. His neighbour's cattle look untroubled outside, yet lose condition and pass watery dung. Two farms, two problems, both parasites. Knowing where a parasite lives is the first step to naming it and explaining its damage.

Évaluation de la leçon

Félicitations, vous avez terminé la leçon sur Ectoparasites And Endoparasites. Maintenant que vous avez exploré le concepts et idées clés, il est temps de mettre vos connaissances à lépreuve. Cette section propose une variété de pratiques des questions conçues pour renforcer votre compréhension et vous aider à évaluer votre compréhension de la matière.

Vous rencontrerez un mélange de types de questions, y compris des questions à choix multiple, des questions à réponse courte et des questions de rédaction. Chaque question est soigneusement conçue pour évaluer différents aspects de vos connaissances et de vos compétences en pensée critique.

Utilisez cette section d'évaluation comme une occasion de renforcer votre compréhension du sujet et d'identifier les domaines où vous pourriez avoir besoin d'étudier davantage. Ne soyez pas découragé par les défis que vous rencontrez ; considérez-les plutôt comme des opportunités de croissance et d'amélioration.

  1. Which of the following is an ectoparasite of farm animals? A. Roundworm B. Tapeworm C. Tick D. Liver fluke Answer: C
  2. Endoparasites are best described as parasites that live: A. On the surface of the skin only B. Inside the body of the host C. In the soil around the animal D. On the plants an animal eats Answer: B
  3. The intermediate host required in the life cycle of the liver fluke is a: A. Tick B. Snail C. Mosquito D. Housefly Answer: B
  4. Heavy infestation with a blood-sucking stomach roundworm such as Haemonchus chiefly causes: A. Improved weight gain B. Anaemia and poor growth C. Immunity to other diseases D. Increased milk fat content Answer: B
  5. The tsetse fly is of major economic importance to livestock keeping in Nigeria chiefly because it: A. Improves pasture growth B. Transmits trypanosomiasis (nagana) C. Is a source of protein for poultry D. Controls tick populations Answer: B

Livres recommandés

Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Sous-titre: Sixth edition
Éditeur: Pearson
Année: 2017
ISBN: 978-0-13-443605-0
Description: A comprehensive introduction to animal science covering anatomy and physiology, nutrition, genetics, reproduction, animal health and the major farm animal species and their production systems.
Small-scale Poultry Production: Technical Guide
Small-scale Poultry Production: Technical Guide
Éditeur: Food and Agriculture Organization of the United Nations
Année: 2004
ISBN: 978-92-5-105082-8
Description: An FAO Animal Production and Health Paper written by a Nigerian animal scientist, covering breeds, housing, feeding, incubation, disease control and marketing for small-scale poultry keepers in developing countries.
Tropical Animal Feeding: A Manual for Research Workers
Tropical Animal Feeding: A Manual for Research Workers
Éditeur: Food and Agriculture Organization of the United Nations
Année: 1995
ISBN: 978-92-5-103758-4
Description: An FAO Animal Production and Health Paper on the principles of ruminant and non-ruminant nutrition and the practical use of tropical feed resources, including crop residues and by-products, in sustainable livestock systems.

Questions précédentes

Vous vous demandez à quoi ressemblent les questions passées sur ce sujet ? Voici plusieurs questions sur Ectoparasites And Endoparasites des années précédentes.

WAEC SSCE - Animal Husbandry - 2021

Question 1 Rapport

(a) Explain each of the following terms as used in the slaughtering of farm animals:
(i) scalding 
(ii) singeing:
(iii) evisceration.

(b) Name four agents involved in the marketing of farm animals and animal products

(c) State five marketing functions that could be performed to facilitate the sale of chicken and eggs.

(d) Name three stages in the life cycle of a roundworm.

(e) Mention two methods of animal improvement.

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