Animal Health Book PDF Download Class 10

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Topic Content i the Book 

1. Diseases caused by helminthes and protozoa 

2. Diseases caused by helminthes and protozoa 

3. Diseases caused by helminthes and protozoa 

4. Diseases caused by external parasites 

5. Bacterial diseases of livestock 

6. Viral diseases of livestock 

7. bacterial diseases of poultry 

8. al diseases of poultry 

9. Fungal diseases of livestock and poultry 103

10. Public health

Prasitology

The word is derived from the word parasite “para” means besides and “Sito” means food. Parasite is an organism that lives inside or on another organism and drives substances from it without rendering any benefit to it. A parasite is a small organism that lives on or in, at the expense of a larger organism called host, host generally provides food and shelter for parasite and the study of the phenomenon of the

parasitism is called parasitology. Parasitology is multidisciplinary subject which is related to the field of biochemistry, Physiology, Cellbiology, Immunology, pathology and Pharmacology.

Animal association may be divided into

1. Phoresis- to carry.

    Commensalism- host is neither benefited nor harm.

2. Symbiosis- Interdependent upon each other that one can’t live without the

    help of the other.

3. Mutualism- similar to symbiosis but association between host and parasite is

    not essential.

4. Parasitism- parasite is always benefited and host is almost always harmed.

Types of Parasites

1. Internal parasite (Endoparasite)- lives inside the body of the host in the

2 Animal Health Part II

   blood, tissue, body cavities, digestive tract and other organs eg trematodes,

   cestode and nematodes

2. Exrernal parasite (Ectoparasites)- live outside on the surface of the body

   of the host e.g lice ,ticks, mites, fleas, leech etc

3. Temporary parasite- visits it host for a short period e.g mosquito, sand fly,

    fleas, bedbug etc

4. Permanent parasite- live a parasitic life in or on the host body throughout

    the whole period of its life.

5. Facultative parasite- lie a parasite life when opportunity arises or a

    facultative parasite is able to live either free or as parasite eg. strongyloids

    spp. Noegleria fowleri etc

6. Obligatory parasite- can’t exist without a parasite life e.g trichinella spiralis

   , malarial parasite

7. Incidental parasite (accidental parasite)- attacks an unusual host in which

    they do not occur normally eg. fasciola hepatica sometime occur in men.

8. Wandering parasite- happens to reach a place or organ where it can’t live

   eg.stephanurus dentatus(sometimes found in the liver of pig but the usual site

   is the pelvis of the kidney.

9. Periodic parasite- visits their host at the time to obtain some metabolic

   requirement or some other benefits eg. mosquito, flies tabanus etc

   Different types of Host

   The organism that harbors the parasites is called the host eg. man, cattle etc.

1. Definitive host- Generally it is vertebrate animal and it either harbors the

   adult stage of the parasite or were the parasite utilize the sexual method of

   reproduction eg. sheep, goat, dog, poultry

2. Intermediate host- These are the host mainly vertebrates or invertebrate,

   which harbors the larval stages of the parasite. In some cases larval

   development are completed in two different intermediate hosts which has

   been referred to as first and second intermediate host respectively eg. snail,

   earthworm, dragonfly, grasshopper, sheep, goat, cattle

3. Carrier host- It is the host in which the parasite remains viable without

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further development, later on the parasite host is ingested by the definitive

host and parasite infection occurs.eg. Earthworms, slugs, flies, snail, dragon

flies crab etc.

4. Principal host- It is that animal in which a particular parasite is most

commonly found eg. haemonchus contortus-in sheep, Heterakis gallinarum-

In fowl

5. Reservoir host- This is the host in which the parasite are found in side th host

but which is not important. But parasite can affect other domestic animals or

human being that host act as a resivior.eg. Echinococcus spp.in fox, Hydatid

cyst in sheep, goat, cattle, dog, human.

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