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Lecture 8

ANSC 101 Lecture Notes - Lecture 8: Manure Management, Animal Identification, Myoglobinuria


Department
Animal Science
Course Code
ANSC 101
Professor
Kasey Moyes
Lecture
8

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Normal indicators
Cattle have higher indicators
Disease
Any deviation from normal health in which there are marked changes in the body
o Physiological e.g. body temperature, intake
o Anatomical e.g. leg problems
o Chemical e.g. elevated stress hormones
Disease/symptoms
Types of disease
o Infection
o Non-infectious
Symptoms
o Clinical
o Sub-clinical
Non-infectious
Mechanical wounds (route for pathogenic invasion)
Digestive bloat, acidosis, etc.
Toxins chemicals (lead, nitrates), plants (hemlock, nightshade)
Nutritional vitamin, mineral issues
Abnormal growths cancer
Infectious
Virus reproduces inside living cells of host; lacks cytoplasm and thus uses metabolic
action of host to replicate; usually host and tissue specific; may pass directly or via vector
Bacteria microscopic; single celled; causes damage via production of toxins
Protozoa single celled; microscopic cells; larger than bacteria
Fungi single or multiple celled low order plants
Spread of infectious disease
Contact with other animals
Contaminated water sources
Ingesting infected fecal matter
Vectors mosquitos, birds
Airborne anthrax, respiratory
Contaminated equipment or facilities
Parasites
Arthropods
o Ticks biting pathway for other organisms
o Mites burrow into skin
Helminths
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o Worms tapeworms, roundworms
o Flukes infect liver
Non-infectious
Metabolic
o Ketosis (hyperketonemia)
o Azoturia (paralytic myoglobinuria)
Nutritional deficiencies
o Se, Fe, Vit A
Functional
o Colic and bloat
Hereditary
o Epithiogenesis imperfecti
Chemical: poisoning
Physical: hardware disease
Terms of sickness
Morbidity
o Measurement of illness; number of individuals in a group that become ill
o Largest problem and cost in animal production
Mortality
o Death rate
Record keeping is important to herd health management
Record date of administration
Animal identification
Know when to treat again booster shots
Withdrawal time before slaughter
Test of carcasses at slaughter house
Prevention
Biosecurity management program
o Management of facilities
o Management of livestock
o Training of workers
o Use of Pharmaceutical and Biologicals
Facilities Management
Shower in-shower out (pig and poultry)
o 90% of disease in poultry can be prevented
All in all out: clear animals out and sanitize room
Movement of livestock
o Avoid injuries and stress
o Avoid contact between groups (pens) of animals
Pasture design
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