care and use of vertebrate animals
DESCRIPTION
Care and Use of Vertebrate Animals. Dr. Janet Whaley Veterinarian for UMCES IACUC. My Info. National Marine Fisheries Service Office of Protected Resource (F/PR2) 1315 East-West Highway Silver Spring, MD 20910 p. (301) 713-2322 ext. 170 [email protected]. Vet Duties. - PowerPoint PPT PresentationTRANSCRIPT
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Care and Use of Vertebrate Care and Use of Vertebrate AnimalsAnimals
Dr. Janet WhaleyDr. Janet WhaleyVeterinarian for UMCESVeterinarian for UMCES
IACUCIACUC
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My InfoMy Info
National Marine Fisheries ServiceOffice of Protected Resource (F/PR2)1315 East-West HighwaySilver Spring, MD 20910p. (301) 713-2322 ext. [email protected]
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Vet DutiesVet Duties
• UMCES Assurance of Compliance with the Public Health Service Policy on Humane Care and Use of Laboratory Animals -
• advise on appropriate procedures for use of finfish in research, review research proposals, inspect UMCES facilities, and provide annual training.
• authority to suspend any research found to be in violation of UMCES or PHS policy.
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JustificationJustification
• Research Goals• Non-animal alternatives• Duplication • Research species• Animal use and pain category
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Pain and FishPain and Fish
• sensory receptors are present• central reception of sensory input is
unclear• clinical signs of acute and chronic stress
can be observed (cortisol levels, changes in other health and behavior parameters)
• avoid adverse stimuli (reflex manner)
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Pain CategoryPain Category
• Category 1 little or momentary pain (euthanasia, tagging)
• Category 2 potential pain or discomfort relieved by anesthetic (euthanasia, surgical procedure)
• Category 3 discomfort or pain which is not relieved
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STRESSSTRESS
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Causes of StressCauses of Stress
• water quality (O2, ammonia, nitrite, pH, other contaminants)
• transportation• netting & handling • temperature• salinity• water hardness
• poor nutrition• inappropriate
housing conditions• noise• lighting• vibrations• stocking density
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Stress ResponseStress Response
Sympathetic nervous system activation
cortisol catecholamines HR, RR serum osmolality glucose
• Immunosuppression( disease resistance) growth rate reproduction rate• delayed “capture”
mortality
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Experimental ProceduresExperimental Procedures
• Experimental design (include statistical methodology for data analysis and determination of number of animals to be used)
• Methods and Materials (describe specifically any handling procedures)
• Methods for anesthesia and euthanasia
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AnesthesiaAnesthesia• Consider for painful/stressful procedures and pre-
euthanasia
• Ice water (transport) - be careful
• Chemical - MS-222, Benzocaine
• Dose is species specific
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Immersion AnesthesiaImmersion Anesthesia
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MS-222MS-222• tricaine methanesulfate, ethyl-m-
animobenzoate methansulfate, Finquel®• CNS depressant• water soluble but acidic (add buffer)• admin. via bath or recirculating system• for anesthesia 50-100 mg/L recommended
(sedation vs surgical)• dose may be species specific - test before
experiment
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MS-222 con’tMS-222 con’t
• induction w/in 3 minutes• recovery w/in 10-15 minutes after removal • is residual +/- could affect chemical analysis of
tissue• no known hazards but wear gloves! • list as chemical hazard in UMCES application
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Levels of Anesthesia
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EuthanasiaEuthanasia
• +/- pre-sedation with MS-222• decapitation• pithing• chemical (MS-222)• requires experience!!!• avoid direct insertion into fixative (alcohol or
formalin)
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Husbandry PracticesHusbandry Practices
• Briefly describe housing, feeding, etc. (refer to specific laboratory standard operating procedures)
• Disposition of alive and dead animals
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Water QualityWater Quality
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The Importance of The Importance of Good Water QualityGood Water Quality
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• Investigate mortality in your system
• Basic necropsy• Know your species• Seek advice• Make appropriate
changes
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Simple DiagnosticsSimple DiagnosticsSkin scrape
Fin clip
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Simple DiagnosticsSimple Diagnostics
Gill clip
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Clinical Diagnostics
Blood collection for analysis
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Environmental SafetyEnvironmental Safety
• infectious agents• chemical hazards (include MS-222)• radioisotopes• biohazards
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ZOONOSISZOONOSIS• Zoonosis = disease that can be transmitted from
animals to humans (or other animals)• Anthroponosis = disease that can be transmitted
from humans to animals• High Risk
– immunosupressed (AIDs, other debilitating disease)– pregnant– age
• Exposure (infected water, fish tissue, fish excrement)– dermal contact via skin abrasion, fissure– ingestion
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Zoonotic DiseasesZoonotic Diseases • Potential for disease organisms to spread between species
(fish human)• Bacteria - from handling (mycobacterium, streptococcus,
erysipelothrix, vibrio, norcardia, aeromonas, edwardsiella) from ingestion (stahylcoccus, clostridium, vibrio,
aeromonas, esherichia, salmonella, edwardsiella)• Parasites - primarily from ingestion (nematodes, cestodes,
trematodes, protozoa).• Toxins - primarily from ingestion (ciguatera, scombroid,
dinoflagellates toxins)
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PATHOGEN INGESTION OF FISH TISSUE (UNDER COOKED OR FECES CONT.)
INGESTION OF INFECTED AQUARIA WATER
DERMAL CONTACT INFECTED FISH
DERMAL CONTACT INFECTED AQUARIUM/SEA WATER
BACTERIA Streptococcus * Staphylococcus * Clostridium + Erysipelothrix + Mycobacterium * + Nocardia * * Vibrio + + P. shigelloides + +
Aeromonas + + Pseudomonas * * Escherichia + Salmonella + Klebsiella + Edwardsiella + + + + Leptospirosis ? ? ? ? PARASITES Anasakiasis + Eustrongyloides + Cestodes + Trematodes + Protozoa * * VIRUSES Calicivirus * FUNGI Candida * TOXINS Ciguatera Poisoning
+ heat and cold stable
Scombroid Poisoning
+ cold sensitive
+ reported cases in humans * no known cases in humans but the potential risk exists ? exposure route of reported human disease unknown
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Mycobacteria
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PREVENTION
• Fish• Know health of your fish• Proper husbandry/aquaculture• Minimum - wear gloves when handling
• All Wildlife• Know the hazards • Take all necessary “known”precautions• DO YOUR HOMEWORK!!!
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ReferencesReferences• Can Fish Suffer?: perspectives on sentience,
pain, fear and stress; K.P. Chandroo et al./Applied Animal Behaviour Science 86 (2004) 225-250
• Fish Cognition and Behavior; Culum Brown et al.; Blackwell Publishing (2006) ISBN: 9781405134293
• Fish Medicine; Michael Stoskopf, W.B. Saunders Company; 1st edition (January 15, 1993) ISBN: 0721626297