October 2023. Module: U0005 Agro-Bioscience


How Infectious Diseases Are Spread



Yüklə 83,38 Kb.
Pdf görüntüsü
səhifə3/8
tarix13.12.2023
ölçüsü83,38 Kb.
#174799
1   2   3   4   5   6   7   8
Seminar Week 2 Disease management and prevention Positive welfare Animal

How Infectious Diseases Are Spread


6. Rodents and free-flying birds.
7. Mosquitoes. Insects-fowl pox and encephalitis are commonly transmitted 
by mosquitoes.
8. Shoes and clothing of persons who move from farm to farm.
9. Contaminated feed and feed bags.
10. Contaminated premises through soil, old litter, or bedding.
11. Airborne organisms, do not spread far through the air, but this source of 
infection can be a strong factor in heavily populated livestock areas.
How Infectious Diseases Are Spread


Manifestations of Disease
Detectable signs of disease are known as 
symptoms.
Visible changes 
in the 
size, color, shape 
or
 
structure
 
of an 
organ
 
are known 
as 
lesions.
Loss of body weight

decreased production, reduced feed 
consumption, droopiness
 
and
 
lameness
 
are
 
some symptoms. An 
enlarged 
liver, tumor 
on the 
intestine
, or an 
abscess
in a lung are examples of lesions.
Many symptoms are general; they usually are seen in any diseased 
individual. Examples are 
droopiness, loss of appetite, labored breathing, 
nasal discharge and diarrhea.


Some of livestock animals’ disease
Common infectious diseases in livestock production
We will cover 4 livestock diseases in 3 species caused by different 
pathogens. As you can imagine there are a very large number of 
diseases and we will not be able to cover everything, but hopefully 
this book will provide a good overview and will give you an idea about 
the challenges farmers face in keeping their animals healthy.
The diseases we will cover are:

Footrot in sheep

Mastitis in dairy cattle

Bovine viral diarrhea

Coccidiosis in chickens



Yüklə 83,38 Kb.

Dostları ilə paylaş:
1   2   3   4   5   6   7   8




Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©azkurs.org 2024
rəhbərliyinə müraciət

gir | qeydiyyatdan keç
    Ana səhifə


yükləyin