DISEASE OF POULTRY بیماری های طیور قسمت اول ارائه از وبلاگ: .
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Transcript of DISEASE OF POULTRY بیماری های طیور قسمت اول ارائه از وبلاگ: .
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DISEASE OF POULTRYDISEASE OF POULTRYطیور های طیور بیماری های بیماری
اول اول قسمت قسمت
وبالگ از وبالگ ارائه از ::ارائه
www.wops.tkwww.wops.tk
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ANTE MORTEM INSPECTIONANTE MORTEM INSPECTION
At the farm before transportation to the slaughterhouse the poultry At the farm before transportation to the slaughterhouse the poultry flock must be examined by veterinarian.flock must be examined by veterinarian.
A certificate must be composed on the results of this inspection and A certificate must be composed on the results of this inspection and the pre-life of the flockthe pre-life of the flock
If the certificate is available – and it is negative – and it does not If the certificate is available – and it is negative – and it does not indicate the necessity of special measures, the ante mortem inspection indicate the necessity of special measures, the ante mortem inspection at the slaughterhouse will include the identification of transported at the slaughterhouse will include the identification of transported flock and control of injuries took place during transportation, flock and control of injuries took place during transportation, furthermore the examination of dead birds.furthermore the examination of dead birds.
Based on these data and examinations the veterinarian decides whether Based on these data and examinations the veterinarian decides whether the flock will be submitted to normal or special slaughter or further the flock will be submitted to normal or special slaughter or further special examination.special examination.
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Notifiable DiseasesNotifiable Diseases
Former Former O.I.E. list A O.I.E. list A – Newcastle diseaseNewcastle disease (Paramyxovirus) (Paramyxovirus)– Avian influenzaAvian influenza (Orthomyxovirus) (Orthomyxovirus)– Duck plaqueDuck plaque (Herpesvirus) (Herpesvirus)
Former Former O.I. E. listO.I. E. list BB– Fowl choleraFowl cholera
– Fowl typhoidFowl typhoid
In case of these diseases the flock is slaughtered separatelyIn case of these diseases the flock is slaughtered separately – mostly at the end of the day- – mostly at the end of the day- as it is not condemned as it is not condemned
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Diseases of Poultry Diseases of Poultry Zoonosis Zoonosis
ParatyphParatyphoidoid (Salmonellosis, except typhoid) (Salmonellosis, except typhoid) CampylobacteriosisCampylobacteriosis ChlamydiosisChlamydiosis TuberculosisTuberculosis /Anthrax//Anthrax/
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Inspection of the surfaceInspection of the surface
injuries (as consequences of transportation)injuries (as consequences of transportation) inflammation of skininflammation of skin
arthritisarthritissynovitissynovitis
(infection of Staph (infection of Staphylococcusylococcus aureus) aureus) Marek’s disease (skin form)Marek’s disease (skin form)
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Inspection ofInspection of visceralvisceral organs organs and the and the bodybody cavitycavity
Bacterial infectionsBacterial infections
Salmonellosis (Fowl typhoid)Salmonellosis (Fowl typhoid) Pasteurellosis (Fowl cholera)Pasteurellosis (Fowl cholera) E. coliE. coli septicaemia septicaemia StaphylococcosisStaphylococcosis StreptococcosisStreptococcosis
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SepticaemiaSepticaemia
hhaemorrhages and/or fibrinous aemorrhages and/or fibrinous inflammation on seromembranesinflammation on seromembranes– pleuritispleuritis
– pericarditispericarditis
– air sacculitisair sacculitis
liver, spleen conditions:liver, spleen conditions:– enlargedenlarged
– friable (associated with subcapsular haemorrhages)friable (associated with subcapsular haemorrhages)
lungs,lungs, intestines, genitalsintestines, genitals
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ParatyphoidParatyphoid (Salmonellosis)(Salmonellosis)ZoonosisZoonosis S. EnteritidisS. Enteritidis
S. TyphimuriumS. Typhimurium S. InfantisS. Infantis S. HadarS. Hadar S. AgonaS. Agona S. Saint-paulS. Saint-paul S. Bovis-morbificansS. Bovis-morbificans …etc. …etc.
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Gram negative rods with filamentsGram negative rods with filaments SSensitivityensitivity:: 70° C 5 min 70° C 5 min
fresh meat - 2-3 weeksfresh meat - 2-3 weeksfrozen meat - yearsfrozen meat - years
PathologyPathology:: septicaemia (enlarged spleen, liver, septicaemia (enlarged spleen, liver, necrotic foci, enteritis (fibrinous inflammation necrotic foci, enteritis (fibrinous inflammation in caecum! - water fowl! )in caecum! - water fowl! )
Total condemned for human Total condemned for human cconsumption!onsumption! Slaughterhouse hygenie, household hygenieSlaughterhouse hygenie, household hygenie
(contamination!)(contamination!)
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Fowl typhoidFowl typhoid
Salmonella Gallinarum/PullorumSalmonella Gallinarum/Pullorumadapted to special hostadapted to special hostGram negative rods without any filamentsGram negative rods without any filaments
sensitive to 70sensitive to 70°°C 5 minC 5 minin fresh meat for 2-4 monthin fresh meat for 2-4 monthin frozen meat for yearsin frozen meat for yearsin water for 4-6 weeksin water for 4-6 weeks
Germinative transmission!Germinative transmission!
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Pathology:Pathology:
eenlarged spleennlarged spleen liver within small necrotic foci liver within small necrotic foci
white-grey (necrotic) nodules in myocardiumwhite-grey (necrotic) nodules in myocardium in lungs in lungs in intestine in intestine
fibrinous inflammation of seromembranesfibrinous inflammation of seromembranes degenerated follicles on ovary, salpingitis degenerated follicles on ovary, salpingitis arthritisarthritis
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Poultry meat is partial condemned for Poultry meat is partial condemned for human consumptionhuman consumption
only the affected areas are condemnedonly the affected areas are condemned(mostly the parenchymal organs and (mostly the parenchymal organs and intestines - in case of arthritis the legs are intestines - in case of arthritis the legs are removed)removed)
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Small intestine, caecum, liverSmall intestine, caecum, liver
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white-grey necrotic nodules in white-grey necrotic nodules in myocardium (myocardium (typhoma)typhoma)
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TuberculosisTuberculosisZoonosisZoonosis
Mycobacterium aviumMycobacterium avium Ziehl-Nelsen positive slim rodZiehl-Nelsen positive slim rodss Main character: Main character: acid- and alcohol-fastnessacid- and alcohol-fastness SSensitivity: (Pasteur)ensitivity: (Pasteur)
• 85°C - 1 sec85°C - 1 sec• 72-76°C - 14-45 sec72-76°C - 14-45 sec• 62-65°C - 30 min62-65°C - 30 min
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Domesticated birds: Domesticated birds: adultadult only onlywildwild- exotic - exotic birdsbirds (ZOO) (ZOO), ostrich, ostrich
Pathology:Pathology: bad conditionbad conditiongrey-yellow nodules of varying sizes in grey-yellow nodules of varying sizes in - diff. organs- diff. organs- intestines- intestines- bone marrow- bone marrow
Condemned for human consumptionCondemned for human consumption
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ColibacillosisColibacillosis
Gram negative rodsGram negative rods ssepticaemiaepticaemia coligranulomatosis (intestine,coligranulomatosis (intestine, mesenterium) mesenterium) CRD (CRD (Chronic Respiratory Disease)Chronic Respiratory Disease)
Partial condemned for human consumptionPartial condemned for human consumption
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Fibrin Fibrin liver, heartliver, heart((Mycoplasma, E. coliMycoplasma, E. coli))
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Fibrin Fibrin (heart, intestine)(heart, intestine)
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Chronic Respiratory DiseaseChronic Respiratory DiseaseMycoplasmosisMycoplasmosis
Mycoplasma gallisepticumMycoplasma gallisepticum Mycoplasma synoviaeMycoplasma synoviae Mycoplasma meleagridisMycoplasma meleagridis Mycoplasma iowaeMycoplasma iowae Mycoplasma anserisMycoplasma anseris Mycoplasma cloacalaeMycoplasma cloacalae Mycoplasma anatumMycoplasma anatum Ureaplasmas Ureaplasmas
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Pathogenicy varied, mostly faPathogenicy varied, mostly faccultative pathogen ! ultative pathogen ! In general Mycoplasmas are cIn general Mycoplasmas are colonizing mucosal olonizing mucosal
surfacessurfaces They are They are associated with bacteria and/or virusesassociated with bacteria and/or viruses
(respiratory virus infection, (respiratory virus infection, E. coliE. coli, , OrnithobacteriumOrnithobacterium..)..)
sstresstressimmunsuppression (viral diseases, mycotoxins..)immunsuppression (viral diseases, mycotoxins..)
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Fowl cholera/PasteurellosisFowl cholera/Pasteurellosis
Mainly in turkey, water fowlMainly in turkey, water fowl Pasteurella multocidaPasteurella multocida acute form acute form
chronic formchronic form Gram negative coccoid-rodsGram negative coccoid-rods
Sensitivity: 60°C 2 minSensitivity: 60°C 2 min PathologyPathology: septicaemia: septicaemia
arthritis arthritis salpingitis salpingitis fibrinopurulent meningitisfibrinopurulent meningitis fibrinous fibrinous inflammation of phallusinflammation of phallus
Septicaemia - condemnedSepticaemia - condemned
Chronic form: partial condemnChronic form: partial condemnationation (except cachexia) (except cachexia)
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Petechiae in the heart of goosePetechiae in the heart of goose(pasteurellosis, erysipelas, asphyxia)(pasteurellosis, erysipelas, asphyxia)
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Necrotic foci in the liver gooseNecrotic foci in the liver goose(pasteurellosis, erysipelas)(pasteurellosis, erysipelas)
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ErysipelasErysipelas
Water fowlWater fowl Erysipelothrix rhusiopatiaeErysipelothrix rhusiopatiae
Gram Gram positivepositive rod rodsssensitivity: mildsensitivity: mild
ssepticaemiaepticaemia Diff. diagn.: PasteurellosisDiff. diagn.: Pasteurellosis ( (septicaemiasepticaemia)) Partial condemnPartial condemnationation for human consumption for human consumption
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StaphylococcosisStaphylococcosis
Staphylococcus aureusStaphylococcus aureusGram positive coccusGram positive coccus
UUbiquiter, pathogen if biquiter, pathogen if entersenters through the skin or through the skin or mucosmucosalal membranes membranes
Pathology: Pathology: septicaemiasepticaemia – young birds – young birds arthritis, periarthritisarthritis, periarthritis synovitis, osteomyelitissynovitis, osteomyelitis - adult - adult
gangrenous dermatitis gangrenous dermatitis (wings, legs)(wings, legs) in broilers in broilers
Condemned or partial condemnCondemned or partial condemnationation
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CampylobacteriosisCampylobacteriosisZoonosisZoonosis
Campylobacter jejuniCampylobacter jejuniC. coliC. coli
Microaerophyl, Gram negative, mild sensitivityMicroaerophyl, Gram negative, mild sensitivity It is an intestinal commeIt is an intestinal commensalnsal in broiler breeders, layer- in broiler breeders, layer-
type breeders, turkey.type breeders, turkey. Hepatitis (enteritis) in poultryHepatitis (enteritis) in poultry
Enteritis in human Enteritis in human Slaughterhouse and household hygiene!Slaughterhouse and household hygiene!
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Chlamydiosis (Ornithosis)Chlamydiosis (Ornithosis)ZoonosisZoonosis
Chlamydia psittaciChlamydia psittaci IntracellularIntracellular Pigeon, Pigeon, turkeys, ducks, turkeys, ducks, gees, pheasantgees, pheasant Inhaling dust from feces or featherInhaling dust from feces or feather Slaughterhouse hygenie Slaughterhouse hygenie
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AnthraxAnthraxZoonosisZoonosis
It occurs It occurs rarely in birdsrarely in birds where the disease where the disease is is endemicendemic..
Chicken are highly resistant.Chicken are highly resistant. Ducks occasionally Ducks occasionally showshow the disease the disease OstrichesOstriches are moderately susceptible, often are moderately susceptible, often
with high mortality. with high mortality.