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Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript WELCOME: WELCOMECPCSEA GUIDELINES FOR LABORATORY ANIMALS: CPCSEA GUIDELINES FOR LABORATORY ANIMALSCONTENTS: CONTENTS INTRODUCTION OBJECTIVE ANIMAL PROCUREMENT TRANSPORT OF ANIMALS PERSONNEL & TRAINING LABORATORY ANIMAL HUSBANDRY ANESTHESIA & EUTHANASIA BREEDING LABORATORY ANIMAL ETHICS CONCLUSION REFERENCES INTRODUCTION: INTRODUCTIONWHY ANIMALS ARE USED IN RESEARCH ?: WHY ANIMALS ARE USED IN RESEARCH ?PowerPoint Presentation: There are 4 reasons The principles of anatomy and physiology are true for humans and animals, especially mammals. Certain strains or breeds of animals get the same diseases or conditions as humans. With animals we can control their environment (temperature, humidity, etc.), and shield them from diseases or conditions not related to the research (control their health). We can use scientifically-valid numbers of animals.PowerPoint Presentation: BACKGROUNDANIMAL USE IN RESEARCH: ANIMAL USE IN RESEARCH Several hundred years : animals placed an important role in biomedical research 19 th century: development of anesthetics opened door to physiological and pharmacological studies in animals that would not have been possible in conscious animalsPowerPoint Presentation: Nearly every medical advance was made possible by such studies Note worthy examples 19 th century : breakthroughs that led to the germ theory of disease Early 20 th century : screening to identify compounds effective as antiepileptic agent 1950s: development of the polio vaccineOpposition to use of animals: Opposition to use of animals Steps to more tightly controlled use of animal subjects were only a beginningPowerPoint Presentation: Documented brutal conditions and lack of care by suppliers of dogs to research laboratories Beginning of increased regulation of animal use in research Within the year , first Animal welfare Act written and approvedAnimal right movements : Animal right movements Movement gained strength of two philosophers Peter singer and Tom RoyanPowerPoint Presentation: Within the next year -government approved more guidelines and regulations to reduce risk that privilege of working with animal subjects would be abusedGUIDELINES: GUIDELINES MINIMISE PAIN AND DESTRESS If privilege to conduct research is to continue then the goal of scientist must be to minimize the potential pain and distress To accomplish this goal , Russel and Burch proposed three specific strategies Replacement Reduction RefinementThe three Rs: Reduction : to obtain comparable levels of information from fewer animals or to obtain more information from same number of animals. Replacement : preferred use of non animal methods over animal methods whenever it is possible to achieve the same scientific aim. Refinement : alleviate or minimize potential pain , suffering and enhance animal welfare for the animal still used . The three Rs: C OMMITTEE F OR T HE P URPOSE O F C ONTROL A ND S UPERVISION O N E XPERIMENTS O N A NIMALS (CPCSEA) - under the provisions of prevention of cruelty to Animal act 1960OBJECTIVES: OBJECTIVES To promote the humane care of animals To avoid unnecessary pain before , during and after experiment To provide guidelines for -Housing ,care ,breeding and maintenance -Sources of experimental animals -Acceptable experimental procedures for anesthesia and euthanasiaANIMAL PROCUREMENT: ANIMAL PROCUREMENT Acquired lawfully From recognized facilities Transportation Consignment- inspected for compliance with procurement specificationsQUARANTINE: QUARANTINE Minimizes the introduction of pathogens Minimum duration small animals-1 week large animals-6 weeks For non human primates- limit exposure of humans to zoonotic infections Physiological, psychological &nutritional stabilization : Physiological, psychological &nutritional stabilization Length of time - duration of transportation -species -intended use of animalsPowerPoint Presentation: Physical separation Housing different species in separate rooms -to prevent inter species disease -to eliminate anxiety -to eliminate physiological and behavioral changes Different species in same room-similar pathogen status and behaviorally compatible Veterinary care: Veterinary care Adequate veterinary care should be provided Observed regularly for signs of illness, injury or abnormal behavior – reported to ensure timely delivery of of veterinary carePowerPoint Presentation: More frequent observations required during -post operative recovery When animals are ill Have a physical deficit Contagious disease – isolated from healthy animals TRANSPORT OF LABORATORY ANIMALS: TRANSPORT OF LABORATORY ANIMALS Mode of transport-road, rail or air Animal density in cages Food & water during transport Protection from transit infection and injuriesRequirements for transport of laboratory animals: mouse rat hamster G. pig rabbit cat dog monkey Maximum No. of animals per cage 25 25 25 12 2 1 or 2 1 or 2 1 Materials used on transport box Metal cardboard, synthetic material Metal cardboard, synthetic material Metal cardboard, synthetic material Metal cardboard, synthetic material Metal cardboard, synthetic material metal metal Metal/ bamboo/ wood Space per animal (cm2) 20-25 80-100 80-100 160-100 1000-1200 1400-1500 3000 3000-4000 Requirements for transport of laboratory animalsPERSONAL HYGEINE: PERSONAL HYGEINE Protective clothing- Face masks Gloves Lab coats Eyeglasses Bouffant hair caps (microbial isolators) Regular medical check up Vaccination- against tetanus & other zoonotic diseasesTraining: Training Handling of animals Personnel hygiene Emergency situationsAnimal User Protection: Animal User Protection Health risks associated with animal research include Zoonotic disease Allergies Bites & Scratches Needle Sticks Chemical or Biohazard exposure Environmental/Laboratory hazards Exercise CAUTION at all times when in the animal facilities Report any indications of illness, respiratory problems, or physical trauma (ie. bites or scratches) to the nurse immediatelyLABORATORY ANIMAL HUSBANDRY & MANAGEMENT: LABORATORY ANIMAL HUSBANDRY & MANAGEMENTANIMAL HOUSE: ANIMAL HOUSEWhat is an animal facility ?: What is an animal facility ? An animal facility is a specialized laboratory exclusively for the purpose of holding &/or breeding specific animals for scientific purposePowerPoint Presentation: Laboratory animals are very sensitive to their living conditions -housed in an isolated building Provide natural behavior and social structure of the study speciesEnvironmental enrichment: Environmental enrichment Little things can make a great difference Essential for animal health and happiness Can improve results : ensures natural behavior expressedAchieved by providing: Achieved by providing Social opportunities Sufficient space and facilities Nesting material Nutritional rewards Other species specific requirementsSocial environment: Social environment Group housing – for communal animals In grouping animals consider -population density -ability to disperse -familiarity among animals Age , sex Group composition – held stableAnimal Husbandry : Animal Husbandry Weekend and holiday care for the animals is essential In the event of a disaster (including loss of power), make sure you are aware of what needs to be done to care for the animals. Make sure you know all species specific handling procedures Be careful to watch food and bedding supplies and order in advance. Some bedding materials are ordered on an annual basis.PHYSICAL FACILITIES: PHYSICAL FACILITIES Building material –Durable, moisture proof, fire resistant Doors – rust, vermin &dust proof, rodent barriers Walls & barriers – free of cracks Floors – smooth, non absorbent & skid proofPowerPoint Presentation: Corridor – wide enough Exterior window – not recommended for small animal facilities Floor drains – to prevent high humidity Storage area – designed for feed , bedding , cages and materials not in use Experimental area - for small animals experimental procedures carried out in separate area -for large animals separate area for surgical procedures and supportive treatmentFUNCTIONANAL AREAS: FUNCTIONANAL AREAS Animal rooms-50-60% Stores – 8-10% Washing – 8-10% Machine rooms – 4-5% Quarantine & corridors – 12-15%TEMPERATURE , HUMIDITY & VENTILATION: TEMPERATURE , HUMIDITY & VENTILATION Constant temperature Alteration - change in biological response - fertility and lactation Ammonia built up Relative humidity- 30%-70% Effective ventilation-10-12 air changes per hour of 100% airLighting: Lighting Time controlled lighting system All animals are to be kept on a 12-14 hour photoperiod NOISE CONTROL Minimize all disturbances and noise to the animal facility Concrete wallsANIMAL CAGE: ANIMAL CAGEDesigned carefully to facilitate: Designed carefully to facilitate Animal well being Meet research requirements Minimize experimental variablesPowerPoint Presentation: The housing should provide -adequate space -Comfortable environment -An escape proof enclosure -Easy access to food and water -Meet the biological needs of animals -Keep the animals dry and clean -Adequate ventilationPowerPoint Presentation: Metal-stainless steel, galvanized iron sheets Synthetic- polypropylene, polycarbonate Mice & rat –shoebox cages Smooth and impervious surface - for easy cleaning Eliminate sharp edges , & broken wires – to prevent injuries to animals IDENTIFICATION : IDENTIFICATION Cage cards- sex, number, principal investigator Temporary identification- pen marks, hair clipping, dyeing of furPowerPoint Presentation: Outdoor housing -Protection from extremes in temperature or harsh whether conditions -adequate protective and escape mechanism -sufficient ventilation -prevent building up of waste materials and excessive moistue -Ground level surface – absorbent bedding , sand , gravel or grassAnimal Husbandry Requirements: Bedding: Animal Husbandry Requirements: Bedding Absorbent Free of toxic chemicals Sterilizable Non palatable Ammonia binding Keep dry and cleanPowerPoint Presentation: Bedding should remain dry between cage changes Contaminated bedding should not come in contact with food or water sources Bedding must be changed at appropriate intervals (varies from daily to weekly) All used bedding and wastes should be disposed of immediately Newly delivered pups- nesting materials (eg. Tissue paper and cotton)Animal Husbandry Requirements: Food : Animal Husbandry Requirements: Food All animals must be fed palatable, non-contaminated, nutritionally adequate food daily Immediately dispose of moldy, insect infested, or otherwise contaminated food Food should be stored in sealed containers and kept off the floor Animal foods generally have a shelf-life of 6 monthsPowerPoint Presentation: No drug, hormone or antibiotic should be added Rodents- pelleted natural ingredient diet composed of cereal grainsAnimal Husbandry Requirements: Water: Animal Husbandry Requirements: WaterPowerPoint Presentation: All animals must have access to potable, uncontaminated drinking water Immediately dispose of contaminated water When using water bottles, it is better to replace than to refill Watering devices-examined for proper orientations Water and food levels should be checked dailySANITATION: SANITATION Animal rooms, corridors, storage space-cleaned with detergents and disinfectants Animal waste is removed by hosting Cages should be sanitized before animals are placed in them Cages , water bottles , stoppers-rinsing at a temp. of 82.2 C or chemical agentsPowerPoint Presentation: Extra cages available at all times Rabbit and guinea pig – urine with high conc. Of proteins and minerals –so treated with acid solution before washing If pathogenic organisms present – autoclaving or gas sterilization essential Frequency of cage washing and bedding changes – concentration of ammonia , appearance of cage , condition of bedding - Number and size of animals housed in the cageMonitoring of sanitation: Monitoring of sanitation Done by visual inspection of materials and microbial monitoring .Waste disposal: Waste disposal Waste should be removed frequently Waste disposal – incineration Storage of waste – separated area cold storage – prevent decomposition of biological wasteRECORD KEEPING: RECORD KEEPING Animal house plans Animal house staff record Health records All SOPs relevant to animals Breeding, stock, purchase records Minutes of IAEC Meetings Records of experiments Death record Clinical record of sick animalsSOPs: SOPs Maintain SOPs regard to animal husbandry , maintenance , breeding , animal house microbial analysis and experimentation . DISPOSAL : DISPOSAL Reused- ensured that animal does not experience repeated painful procedures Suffer severe pain or distress- Euthanized Ensure clinically deadANIMAL EXPERIMENTS: ANIMAL EXPERIMENTS Duration of exp.- Not more than three years Physical restraint - period should be minimum - provide training Exp. Involving hazardous agents-procedures used reviewed by both IBC and IAECPowerPoint Presentation: Physical sampling - consider non invasive sampling Invasive method - minimize pain - use anesthetics or analgesics Repeated blood sampling- implant indwelling cathetersPowerPoint Presentation: Surgery-under anesthesia -carried out by trained personal Infection-studied in infected animals Nutritional restriction-below maintenance requirement avoided as possiblePowerPoint Presentation: Selective breeding -need special justification -affect animals integrity -increase mortality rate Deprivation- severity and duration minimized Previous experience of animal- trained in advance to reduce fear associated with proceduresLABORATORY ANIMAL ETICS: LABORATORY ANIMAL ETICS Constitution of AEC –for rational use of animalsETHICAL GUIDELINES FOR LABORATORY ANIMALS: ETHICAL GUIDELINES FOR LABORATORY ANIMALS Advancement of knowledge Appropriate species & quality Minimum no. of animals Treat with kindnessPowerPoint Presentation: Invasive methods-under sedation, analgesia or anesthesia Suffer sever pain- euthanized Best possible living condition & veterinary care Qualified personnel Alternate methods- In vitro methodsANAESTHESIA: ANAESTHESIA Anaesthesia = without sensation an = without, aestos = sensationANAESTHESIA: ANAESTHESIA For painful procedures Procedures that cause pain in humans cause pain in animals Anesthetic agent generally affect cardiovascular , respiratory & thermoregulatory mechanism in addition to CNSInspection before anaesthesia: Inspection before anaesthesia Check animals before starting Do not anaesthetise sick animals, they are unsuitable for experiments anyway Pay attention to symptoms of infectionsPreanaesthetic treatments: Preanaesthetic treatments Pigs , cats , dogs & primates – fasted for 8-12 hours -Minimize vomiting Rabbits and rodents – do not vomit - Do not require fastingPowerPoint Presentation: Access to drinking water Weighed – dosage calculation Pre treatments – anticholinergics , tranquilizers , sedativesAnaesthetic depth: Anaesthetic depth Mouse respiratory rate, cornea tail pinch and pedal reflex pedal best Rat respiratory rate, tail pinch pedal reflex and ear pinch ear pinch bestPedal reflex: Pedal reflex Tail pinchAnaesthetic depth: Anaesthetic depth Guinea-pig palpebral reflex and ear pinch ear pinch best may move 1-2 times, is not lightening of anaesthesia Rabbit light surgical - pedal reflex medium depth - palpebral reflex & ear pinch corneal reflex - dangerously deepEar pinch: Ear pinchPowerPoint Presentation: Local anesthesia & general anesthesia Local anesthesia – for minor and rapid procedures General anesthesia-inhalants , im , iv Given for full duration of exp. Side effects- excessive salivation , convulsions , excitements &disorientation prevented and controlledCommonly used anesthetic drugs in laboratory animals: DRUGS (mg/kg) MOUSE RAT HAMSTER G.PIG RABBIT CAT DOG MONKEY Ketamine HCl (I /m) 22- 24 22-24 - 22-24 22-24 30 30 15-40 Pentobarbitone sodium (i/ v) 35 25 35 30 30 25 20-30 35 Thiopentone sodium (I /v) 25 20 20 20 - - - - Urethane sodium (i/ v) 0.75 1.5 1 1.25 1 1 Commonly used anesthetic drugs in laboratory animalsEUTHANASIA-easy death: EUTHANASIA-easy death eu = good thanatos = deathPURPOSE: PURPOSE End of experiment , to provide tissue for scientific purpose Free the animal of pain and suffering Diseased animal or animals in bad condition Animals unsuitable to breed Too many animals in a stockPowerPoint Presentation: The method should meet the following requirements - Death without causing anxiety , pain & distress with minimum lag phase - minimum physiogical and psychological disturbance -Compatible with the purpose of study -minimum emotional effect on operator - location- separate from animal rooms Larger species - tranquilizers should be administeredPowerPoint Presentation: causes of death : 1.hypoxia 2. direct depression of vital neurons heart or respiratory failure 3. physical destruction of brain activity -brain death • methods: chemical or physical • death must be confirmedPowerPoint Presentation: Approved: CO2 or overdose of anesthetics Not approved: cervical dislocation or other physical means without anesthesia Do not perform euthanasia, or any other procedure on an animal until a person experienced with the procedure has trained you, and you feel confident performing the technique. When possible, two mechanisms of euthanasia should always be performed on each animal – make sure you verify death Do NOT perform euthanasia in the presence of other animalsEUTHANASIA OF LABORATORY ANIMALS : EUTHANASIA OF LABORATORY ANIMALS PHYSICAL METHODS - ELECTROCUTION - EXANGUINATION - DECAPITATION - CERVICAL DISLOCATIONPowerPoint Presentation: DRUG ADMINISTRATION - BARBITURATE OVER DOSE - CHLORAL HYDRATE OVER DOSE - KETAMINE OVER DOSE - SODIUM PENTOTHOL OVER DOSEBarbiturate euthanizing doses: Barbiturate euthanizing doses Species IV route (mg/kg) IP route (mg/kg) Mouse 150 150 Rat 150 150 Rabbit 100 150 Guinea pig 120 150 Hamster 150 150 Dog 80 80PowerPoint Presentation: INHALATION OF GASES - CARBON MONOXIDE - CARBON DIOXIDE - CARBON DIOXIDE PLUS CHLOROFORMPowerPoint Presentation: species Mouse Rat Hamster G.pig Rabbit dog Physical methods .Electrocution .Exsanguinations .Decapitation .Cervical dislocation NR A A A NR A A A NR A NR A NR A NR NR NR A NR NR NR NR NR NR Inhalation of gases Carbon monoxide Carbon dioxide Carbon dioxide +chloroform A A A A A A A A A A A A A A A A NR NR Drug administration Barbiturate overdose Chloral hydrate overdose Ketamine overdose Sodium pentothol overdose A NR A A A NR A A A NR A A A NR A A A A A A A A A APowerPoint Presentation: Methods not acceptable for any species of animals a) Physical methods –decompression -stunning b) Inhalation of gases – Nitrogen flushing - Argon flushing c) Drug administration – curariform drugs -nicotine sulphate - magnesium sulphate - potassium chlorideBREEDING: BREEDING Breeding stocks – From CPCSEA registered breeders Of known genetic make up and health status Inbred strain- characters and number of generations must be knownBREEDING TYPES: BREEDING TYPES Inbred strains -To reduce the number of heterozygotes and to increase the number of homozygotes F1 hybrid- First generation of cross between two highly inbred strains Random breeding- Mated together without regarding relationships Selective breeding- Choosing parents according to characters that is desired to change BREEDING METHODS: BREEDING METHODS Hand mating – Rabbit and hamsters Pair mating – Mice and rat Trio mating Harem mating – Guinea pigTRANSGENIC/ KNOCK OUT ANIMALS: TRANSGENIC/ KNOCK OUT ANIMALS Transgenic animals- into whose germ line foreign gene have been engineered Knockout animals- specific gene have been disrupted leading to loss of function USES: USES To study biological functions of specific gene To develop animal models of diseases To produce therapeutic productsCONCLUSION: CONCLUSIONREFERENCES: REFERENCES INDIAN JOURNAL OF PHARMACOLOGY 2003 ; 35 :257-274 FUNDAMENTALS OF EXPERIMENTAL PHARMACOLOGY BY GHOSH, 2 ND EDITION , PAGE NO.1-2 DRUG DISCOVERY AND EVALUATION BY H.GERHARD VOGEL , SECOND EDITION , PAGE NO:1369-1382 http://www.google.comTHANK YOU: THANK YOU You do not have the permission to view this presentation. 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