VTPB 334 - EXAM 1 (TAMU) questions
well answered already passed
Disease - correct answer ✔✔Any abnormality that results in the alteration of normal function
Morbidity - correct answer ✔✔Rate of infection
Mortality - correct answer ✔✔Of those infected, how many die.
Causes of Disease w/ examples - correct answer ✔✔Infectious agents & toxins (bacteria,
viruses, etc)
Genetic defects ( Ascites- high altitude / bone problems)
Toxicities ( feed additives, medications- doesn't happen often bc we have this down in industry)
Nutritional & Metabolic Disorders (Rickets, nutritonal deficiency)
Environmental Factors
Why is it important to identify the ROOT cause of disease? - correct answer ✔✔If you just treat
symptoms, disease could still be there and cause more problems, secondary diseases, etc.
Tools for Identifying Causes of Disease - correct answer ✔✔Veterinarians, extention agents,
farm managers, etc (Important to keep good records)
Feed analysis, review management practices (Not common b/c everything is controlled in
industry)
Necropsy (very common- usually first)
Blood & Egg tests (antibodies in an egg might mean infection was present)
Sentinel Birds (not common)
, Types of Infectious Agents - correct answer ✔✔-viruses
-bacteria
-protozoa
-metazoa
-fungi
(some produce toxins that have negative affects/cause disease
Factors Affecting Disease (with examples) - correct answer ✔✔Host (age, gender, breed, strain,
line, etc)
Agent (how many, type, virulence, immune status of host, point of entry)
Environment (management, stress, stocking densities)
Opportunistic Pathogens - correct answer ✔✔Present in animal/environment until immune
system is weakened for some reason
Ex- Staph is on the skin but wont cause infection until it can enter the bird through cut
Obligate Pathogens - correct answer ✔✔not always present but always cause disease when
present
(ex- exotic newcastle)
Infectious Disease - correct answer ✔✔disease cause by infectious agent
Infectivity - correct answer ✔✔ability of a biological agent to enter and grow in the host (does
not necessarily mean it will cause disease)
Pathogenicity - correct answer ✔✔ability to cause disease
well answered already passed
Disease - correct answer ✔✔Any abnormality that results in the alteration of normal function
Morbidity - correct answer ✔✔Rate of infection
Mortality - correct answer ✔✔Of those infected, how many die.
Causes of Disease w/ examples - correct answer ✔✔Infectious agents & toxins (bacteria,
viruses, etc)
Genetic defects ( Ascites- high altitude / bone problems)
Toxicities ( feed additives, medications- doesn't happen often bc we have this down in industry)
Nutritional & Metabolic Disorders (Rickets, nutritonal deficiency)
Environmental Factors
Why is it important to identify the ROOT cause of disease? - correct answer ✔✔If you just treat
symptoms, disease could still be there and cause more problems, secondary diseases, etc.
Tools for Identifying Causes of Disease - correct answer ✔✔Veterinarians, extention agents,
farm managers, etc (Important to keep good records)
Feed analysis, review management practices (Not common b/c everything is controlled in
industry)
Necropsy (very common- usually first)
Blood & Egg tests (antibodies in an egg might mean infection was present)
Sentinel Birds (not common)
, Types of Infectious Agents - correct answer ✔✔-viruses
-bacteria
-protozoa
-metazoa
-fungi
(some produce toxins that have negative affects/cause disease
Factors Affecting Disease (with examples) - correct answer ✔✔Host (age, gender, breed, strain,
line, etc)
Agent (how many, type, virulence, immune status of host, point of entry)
Environment (management, stress, stocking densities)
Opportunistic Pathogens - correct answer ✔✔Present in animal/environment until immune
system is weakened for some reason
Ex- Staph is on the skin but wont cause infection until it can enter the bird through cut
Obligate Pathogens - correct answer ✔✔not always present but always cause disease when
present
(ex- exotic newcastle)
Infectious Disease - correct answer ✔✔disease cause by infectious agent
Infectivity - correct answer ✔✔ability of a biological agent to enter and grow in the host (does
not necessarily mean it will cause disease)
Pathogenicity - correct answer ✔✔ability to cause disease
