Back to Course

SS3: AGRICULTURAL SCIENCE - 1ST TERM

0% Complete
0/0 Steps
  1. Crop Improvement | Week 1
    9 Topics
    |
    1 Quiz
  2. Animal Improvement | Week 2
    6 Topics
    |
    1 Quiz
  3. Animal Health Management I - Introduction | Week 3
    7 Topics
    |
    1 Quiz
  4. Animal Health Management II | Week 4
    5 Topics
    |
    1 Quiz
  5. Animal Health Management III | Week 5
    7 Topics
    |
    1 Quiz
  6. Aquaculture | Week 6
    11 Topics
    |
    1 Quiz
  7. Apiculture or Bee-keeping | Week 7
    10 Topics
    |
    1 Quiz



Lesson Progress
0% Complete

Topic Content:

  • Livestock Endoparasites
    • Tapeworm, Liver fluke, Roundworm
      • Modes of transmission and life cycle
      • Economic importance, prevention & control

1. Tapeworm (Taenia solium and Taenia saginata):

Tapeworms are flat, segmented worms that live in the intestines of animals and humans. They belong to the group Platyhelminthes.

They have hooks and suckers in the head, known as the scolex, which attach to the intestine of their hosts. The scolex of Taenia solium contains four large suckers and a rostellum containing two rows of hooks. The scolex of T. saginata has four large suckers but lacks the rostellum and rostellar hooks. The suckers are used for feeding.

Tapeworm bodies are covered with hard cuticle covering, through which they absorb food. The cuticle covering also prevents it from being digested by the digestive enzymes of its host. Humans are primary hosts while pigs and cattle are secondary hosts.

Tapeworm
Tapeworm.

Tapeworms are hermaphrodites. The adult tapeworm is made up of many small segments, called proglottids, containing both male and female reproductive organs.

Immature Proglottids are located just behind the neck. They are shorter and broader and are devoid of reproductive organs. New proglottids are constantly formed in the neck and increase in maturity as they move farther from the scolex. Mature Proglottids become Gravid Proglottids filled with eggs.

What is the difference between Mature and Gravid Proglottids? Mature proglottids possess the uterus, ovary, testes, sperm duct, and genital pore. Gravid proglottids are filled with eggs.

Taenia solium is a species of tapeworm that uses humans as its definitive or primary host and pigs as the intermediate or secondary hosts.

Taenia saginata is another species of tapeworm that reaches maturity in humans but uses cattle as an intermediate host. It is also known as the beef tapeworm. It causes taeniasis in humans and cysticercosis in cattle.

Life Cycle of Tapeworm:

Tapeworms are hermaphrodites which means they can undergo self-fertilization. Gonads of both sexes also occur within a single mature proglottid. The tapeworm’s life cycle involves a definitive and one or more intermediate hosts.

 

You are viewing an excerpt of this Topic. Subscribe Now to get Full Access to ALL this Subject's Topics and Quizzes for this Term!

Click on the button "Subscribe Now" below for Full Access!

Subscribe Now

Note: If you have Already Subscribed and you are seeing this message, it means you are logged out. Please Log In using the Login Button Below to Carry on Studying!

Responses

Your email address will not be published. Required fields are marked *

error: Alert: Content selection is disabled!!