Diseases of Poultry - APSC 301

These flashcards cover key concepts, symptoms, and treatments of poultry diseases to aid in exam preparation for APSC 301.

A healthy poultry flock can lead to __.

profit

Mortality rate of poultry in the 1920s was __ percent.

18

Currently, poultry mortality rates since the 1970s are around __ percent.

5

The broiler industry's mortality rate is approximately __ percent for the entire growing period.

5

Diseases are any departure from __ health.

normal

Manifestations of diseases are known as __.

signs or symptoms

Loss of appetite, droopiness, and diarrhea are examples of __ symptoms.

general

Flaccid paralysis is a __ symptom associated with botulism.

specific

Visible changes in size, shape, color, or structure of an organ are referred to as __.

lesions

__ is the study of the cause of disease.

Etiology

The ability of an organism to cause disease in its host is known as __ or pathogenicity.

virulence

If more than __ percent of birds are sick at one time, it indicates a problem.

1

During the first 3 weeks, chick mortality losses average about __ percent.

2

After 3 weeks, mortality should not exceed __ percent per month.

1

Normal feed and water consumption, rate of growth, and egg production are considered __ signs.

normal

Physiological indicators for poultry health include temperature of __ °F.

106

General sounds and activity of birds are important compared to __.

droopiness and ruffled feathers

Disease consists of combinations of and factors.

indirect or direct

Indirect factors lower the birds’ resistance, sometimes referred to as __ factors.

stress

A contagious disease is easily __ from one individual or flock to another.

transmitted

Infectious diseases can be caused by __, viruses, or fungi.

bacteria

Carrier birds, other animals, and contaminated materials are ways in which infection can be __ in poultry.

spread

Introducing __ birds into a flock can also spread disease.

diseased

A flock health program is part of effective __ and control programs.

prevention

Immunity is defined as the ability to __ infection.

resist

__ immunity includes skin and mucous membranes.

Innate or natural

Requirements of the avian immune system include two primary lymphoid tissues, the thymus and the __.

bursa of Fabricius

T immune cells originate from the __, responsible for cell-mediated immunity.

thymus

B immune cells, responsible for antibody-mediated immunity, originate from the __.

bursa of Fabricius

Secondary lymphoid tissues include the spleen and __.

lymph nodes

The avian diseases are due to pathogenic microorganisms and __ deficiencies.

nonpathogenic

__ is a bacteria that causes Fowl Cholera.

Pasteurella multocida

Symptoms of Fowl Cholera include stupor and __.

loss of appetite

Transmission of Fowl Cholera can occur through contaminated __ supplies.

water

Fowl Cholera can be diagnosed accurately only in a __.

lab

Aspergillosis is caused by the fungus __ fumigatus.

Aspergillus

Symptoms of Aspergillosis include gasping and __.

loss of appetite

Newcastle disease is known for being highly __.

infectious

The transmission of Newcastle disease happens mainly through __.

the air

Control and prevention of Marek’s Disease primarily involve the use of __.

vaccines

Coccidiosis is caused by a group of __ organisms.

protozoan

Symptoms of Coccidiosis may show as bloody __.

droppings

In treating Coccidiosis, several drugs can be administered in feed or __ water.

drinking

Laryngotracheitis is caused by a specific __ virus.

herpes