Animal Husbandry WAEC

Reproductive System

Übersicht

A Yankasa ram runs with twenty ewes for a full season, yet only three lambs are born at the end of it. The ram is healthy, willing and mating often, so the shepherd assumes bad luck. The real explanation usually has nothing to do with luck and everything to do with reproductive biology: mating on the wrong day of a ewe's cycle wastes the encounter completely, however many times it happens. Understanding the reproductive system is what turns mating into lambs, kids, calves and piglets.

In this lesson you will meet the parts of the male reproductive system and the parts of the female reproductive system in a farm animal, and learn exactly what each part does. You will follow fertilisation itself, from ovulation through mating to the fused egg implanting in the uterus, and see why the timing of service around oestrus, and an awareness of how long pregnancy lasts in each species, are the two pieces of knowledge that make the difference between an empty pen and a full one.

Ziele

  1. Identify the parts of the male reproductive system
  2. Identify the parts of the female reproductive system
  3. State the functions of the parts of the reproductive system
  4. Explain the process of fertilisation in farm animals
  5. Distinguish between the reproductive system of a male and a female farm animal

Mindmap

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Lernkarten

Schnelles Abfragen der Fakten, die zu diesem Thema gepruft werden.

Lektionshinweis

Every calf, kid, lamb and piglet begins with two cells meeting at the right moment: an egg from the female, a sperm from the male. Getting an animal pregnant needs healthy organs in both, correctly timed mating, and an accurate sense of when the young is due. This lesson builds the anatomy every later topic on breeding and artificial insemination assumes you already know.

Unterrichtsbewertung

Herzlichen Glückwunsch zum Abschluss der Lektion über Reproductive System. Jetzt, da Sie die wichtigsten Konzepte und Ideen erkundet haben,

Sie werden auf eine Mischung verschiedener Fragetypen stoßen, darunter Multiple-Choice-Fragen, Kurzantwortfragen und Aufsatzfragen. Jede Frage ist sorgfältig ausgearbeitet, um verschiedene Aspekte Ihres Wissens und Ihrer kritischen Denkfähigkeiten zu bewerten.

Nutzen Sie diesen Bewertungsteil als Gelegenheit, Ihr Verständnis des Themas zu festigen und Bereiche zu identifizieren, in denen Sie möglicherweise zusätzlichen Lernbedarf haben.

  1. Which male reproductive organ produces both sperm and the hormone testosterone? A. Epididymis B. Vas deferens C. Testes D. Prostate gland Answer: C
  2. In the female reproductive tract of a farm animal, fertilisation normally takes place in the: A. Uterus B. Cervix C. Vagina D. Oviduct Answer: D
  3. Which of the following is an accessory gland of the male reproductive system? A. Epididymis B. Seminal vesicle C. Vas deferens D. Testis Answer: B
  4. The muscular structure that stays tightly closed to separate the uterus from the vagina, except at mating and birth, is the: A. Cervix B. Oviduct C. Ovary D. Vulva Answer: A
  5. A doe goat with an average gestation period of 150 days is served on 1st January. She is expected to kid at about the end of: A. March B. April C. May D. July Answer: C

Empfohlene Bücher

Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Untertitel: Sixth edition
Verleger: Pearson
Jahr: 2017
ISBN: 978-0-13-443605-0
Beschreibung: 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
Verleger: Food and Agriculture Organization of the United Nations
Jahr: 2004
ISBN: 978-92-5-105082-8
Beschreibung: 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
Verleger: Food and Agriculture Organization of the United Nations
Jahr: 1995
ISBN: 978-92-5-103758-4
Beschreibung: 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.

Wiederholungsfragen

Fragen Sie sich, wie frühere Prüfungsfragen zu diesem Thema aussehen? Hier sind n Fragen zu Reproductive System aus den vergangenen Jahren.

WAEC SSCE - Animal Husbandry - 2020

Frage 1 Bericht

(a) Explain each of the following terms as used in animal production: (i) flushing: (i) dystocia: (iii) parturition.

(b) State five ways in which fencing is important in livestock production.

(c) Mention five ways in which rearing of rabbits is important.

(d) List four disadvantages of deep litter system in poultry production.

Antwortdetails

(a) Terms in animal production

  • (i) Flushing: Giving extra or improved feeding (high-energy ration) to breeding females a few weeks before mating in order to raise the ovulation rate and improve conception.
  • (ii) Dystocia: Difficult birth; the difficulty an animal experiences when giving birth.
  • (iii) Parturition: The act of giving birth, that is the expulsion of the young from the body of the mother.

(b) Five ways fencing is important in livestock production

  • It keeps animals within the farm and prevents them from straying.
  • It keeps out predators and thieves.
  • It allows controlled grazing and paddocking.
  • It separates animals of different classes, ages or sexes.
  • It helps control breeding and the spread of disease, and marks the farm boundary.

(c) Five ways rearing of rabbits is important

  • It is a source of white meat rich in protein.
  • It is a source of income.
  • Rabbits are prolific and breed rapidly.
  • They need little space and small capital to start.
  • They provide fur or skin, and their droppings serve as manure.

(d) Four disadvantages of the deep litter system

  • Diseases and parasites spread easily through contact with droppings.
  • Damp litter releases ammonia which causes respiratory problems.
  • Cannibalism and egg eating are common.
  • It is difficult to keep records of individual birds and eggs may become dirty.
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