Animal Health Flashcards
Morbility
sickness (used to calculate health of a herd and feedlots)
Mortality
death loss
Infectious
capabale of invading, growing in living tissue (living organisms)
Non-Infectious
disorder not caused by living host
Direct Cause
exposure or contact through pathogens
In-Direct Contact
airborne through coughs
Contagious
disease capable of being transmitted
Sub-Clinical
loss of appetite, lung lesions, reduced lung capacity
Clinical
can see or measure
pneumonia, snotty nose, temperature, heavy breathing
Acute Disease
sharp, quick symptoms
overeating death, milk fever, tetanus
Chronic Disease
symptoms progress over time, may not be noticeable at first
not eating, unthrifty (not bright or alert)
Causes of Infections
bacteria, viruses, protozoa, parasites, fungi, prion
Bacteria
has a cell wall
can vaccine for bacteria
vaccination develops immunity
antibodies attack cell wall
Viruses
have no cell wall
very few vaccine, anitbiotics don’t work
prevent secondary infections
Protozoa
larger than bacteria
single cell organism
need a vector to transmit
Parasites
need a host to live
early more subclinical than clinical
bottle jaw is an early sign
internal and external
fungi
grows externally
lamb fungus and ringworm
releases chemicals that mimics the body so the white blood cells don’t recognize it
hard to get rid of, releases spores, can survive in any enivronment
Prion
protein that has become deformed and misfolded
CJD - mad cow, chronic wasting disease
no treatment, 100% deadly
4 Steps to be considered Infectious Disease
entrance to host
adapt to environment
exit host
infect another host
Infectious Disease Transfer
ingested
nasal
blood (west nile
reproducitve (chlaymdia, herpes)
maure (made cow, e coli, salmonella)
Zoonotic Diseases
capable of being passed from animals to humans, species to species
Direct Contact, Indirect Contact, Vector-Borne (west nile; ticks, mosquitos), Foodborne (salmonella), waterborne (giardia)
Pull
act of removing an animal from the herd that is sick to be treated
Detecting Animal Health
Depression (head hanging low, not alert)
Weakness (ears hanging, thinning)
Gauntness (triangle of death, skinny)
Nasal/Eye/Ear Discharge (color and amount)
Cough/Breathing (labored breathing, mouth open)
Feces (scours vs. normal healthy, bacteria, viruses)
Diagnosis of Diseases
Diagnosis - process of determining the presence of disease (veterinarians)
Symptoms, deviation from normal, nasal discharge, necropsy