biosecurity Flashcards
biosecurity vet med def
-prevention of foreign naimal disease’
-managing andoreventing disease risks faced in production units and clinic
biosecuirty pillars
1.access management
2. animal managemenet
3. operation management
access management
-physcial control we have over how disease gains entry onto premise
-physical barriers established to reduce risk of disease transmission
-easiest control but expensive
animal health management
-programs limiting risk of introduction or transmission of endemic disease
-preventatitve animal health programs
operational management
-day to day reponsibilities
-sops: standard operating procedures
control of microorganisms
-prevent infection
-treat diseass
-limit spoilage and decay
-regulate useful processes such as fermentation
mechanisms of control
-stasis= inhibit mcrb reproduction and growth
-cidal= kill mcrb
enivronemental factors
-drying forces
-level of organic matter
-radiation (sunlight)
-oxidation
-pH
-temperature
-control of vectors
cleaning and disnfection fxn
use combinations ofenvironemental factors ot reduce amnt of mcrbs in envio or object
how to preserve pathogens
-moisture, darkness, cold (freezing)
hygiene
-establishment and maintenance of health
sanitation
promotion of hygiene and prevention of disease by maintenance of clean conditions especially disposal of waste
commercial sanitizers
- compounds that reduce numbers of mcrbs
disinfectant types
-disinfectant
-antiseptic
-alcohols
-aldehydes
-halogens
oxidizing agents
-phenols
-quarternary ammonia compounds
disinfectant
chemical that destroys vegetative forms of micrbs on inanimate objects
-greater capacity to kill mcrbs as compare to sanitizers
antiseptic
chemical germicide formulate for use on skin and tissue
alcohols
-ehtanol and isopropyl spray
-good against bacteria but not against spores
-short contact time
-inactivated in organic material
aldehydes
-glutaraldehyde, formalin
-good antimcrb, sporicidal and fungicidal
-partly inactivated by organic material
-dangerous use
halogens
-chlorine, iodine, sodium hypochlorite(bleach)
-chlorine based: 1:10 bleach excellent bactericidal, anticirus, antiparasitic, modest against organic debris
-iodine base(betadine_ good surgical srub
oxidizing agents
-ozone, hydrogen perozidem peracetic acid potassion permanganatem potassion peroxymonosulfate (virkon)
-oxidise cell membrane=lysis
-virkon: antibacterial, antiviral and fungal, organic material penetration
phenols
-oldest disinfectant
-denatures protein good antibacterial
quarternary ammonia compounds
-amphoteric surfactants
-broad specturm good against most bacteria
-fungi
-enveloped viruses
-chlorhexidine: not good for ear
sterilization
killing or removal of all organisms
-steam
-dry heat
-ethylene oxide
-peracetic acid
-vaporized hydrogen peroxide
-glutaraldehyde (cold sterile) - last resot
feed cost savings for cleaning
19%
