Download - Sheep Diseases
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Cairo university
Faculty Of Veterinary Medicine
Dept. Of Internal Medicine And Infectious Diseases
Course No. 452
Infectious diseases of sheep & goat
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Parasitic Disease
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Alopecia can be seen on the sheep's body.
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Alopecia and scales can be seen on goat's head.
Psoroptic mange
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A goat with generalised lesions.
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Demodectic Mange
Nodules surrounding A goat's lip, nares and eyes.
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Nodules have been exposed by clipping the hair, and exudate has been expressed from one Nodule
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Sarcoptes mite
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Sarcoptes mite
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Psorptes mite
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Demodex mite
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Tick
This engorged tick is attached below the chin.
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Adult Tick
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Cutaneous myiasis
Numerous maggots are feeding on the skin surface.
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biting louseNote the broadhead and a tan
body.
sucking louse Note the narrow
head and a blood-filled body.
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Oestrus OvisLarva of Oestrus Ovis in the nasal cavity
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Oestrus OvisLarvae and pupa of Oestrus Ovis
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Fascioliasis Mature flukes in the bile ducts.
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Fascioliasis
Chronic fibrous thickening of the bile ducts.
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Fascioliasis Bile-stained ova in faeces, with the operculum.
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A sheep with submandibular oedema (“bottle jaw”).
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HaemonchosisSevere anemia in acute infection.
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Adult Lung worm in lung tissue
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Lung worm larva
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Lung worm larva
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Moniezia expansaStrobila in the lumen of the intestine.
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Moniezia expansalamb intestine.
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Moniezia expansaA tapeworm from an infected lamb.
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Moniezia eggs
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Nematodirus egg
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P.G.E. egg
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Hydatid cysts in a sheep liver.
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(Coenurus cerebralis infection.)
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Coenurus cerebralis Cyst
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CoccidiosisEimeria infection in a goat.
CoccidiosisEimeria lesions in a sheep.
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Un-sporulated Oocysts of Eimeria sp.
Sporulated Eimeria oocyst
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Babesiosis. in sheep red cells. Giemsa stain.
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A mixed infection by babesia and Theileriosis.
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Theileriosis. Erythrocytic forms of (T. hirci) in a blood smear. Giemsa stain.
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Viral Disease
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Contagious Pastular Dermatitis
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The lesion at the mouth commissure, around the nares and around the eye
C.P.D
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Strawberry footrotNote The Lesion on The mouth
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Note the lesion on and around the teats
C.P.D
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Facial oedema with Mucopurulent to bloody nasal discharge.
Bluetongue
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BluetongueCrusts round the eyes and nares.
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Intense congestion and swelling of lips and gums and sloughing of the dental pad mucosa.
Blue tongue .
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BluetongueLameness and tiptoe stance in the acute disease .
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Bluetongue Lesions at the coronary band.
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Foot-and-mouth disease.
Acute lameness.
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Foot-and-mouth disease
Lip erosions and blanching of the dental pad.
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Foot-and-mouth diseaseVesicle on the coronary band.
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Foot-and-mouth diseaseTiger-striping of the myocardium.
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Sheep pox Pox lesion around nostrils and eye
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Sheep pox. Pulmonary lesions. Sheep pox . nodules in the lungs (pulmonary form)
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Bacterial Disease
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Anthrax bacilli in sheep blood
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Black disease .A focal necrotic lesion in the liver.
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Lamb dysenteryBlood-stained tail and hind-quarters.
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Struck Localized enterotoxaemia in the small intestine.
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Lamb dysentery Acute enteritis.
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Pulpy kidneyNecrotic 'cotton-wool' kidney cortex.
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Blackleg Note the blackened area of acute muscle
necrosis.
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SalmonellosisEngorged liver with distension of the gall bladder.
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Tick pyaemiaMultiple liver abscesses.
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Listeriosis
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ListeriosisFacial paralysis in a lamb
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TetanusNote the characteristic tail position.
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Tetanus Characteristic rigidity in a recumbent buck.
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Caseous lymphadenitis note the lesion under the ear
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Caseous lymphadenitis abscesses in a sheep lung.
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Brucella melitensisNecrotic cotyledons in aborted material.
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Brucella melitensis A stillborn fetus with necrotic placenta.
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Brucellosis .Edema and swelling of scrotum
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Dermatophilosis ”lumpy wool.”Wool fibers matted together by exudate
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DermatophilosisThick crusts cover this goat's dorsum after
prolonged exposure to rain.
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Dermatophilosis Crusty,scaly lesions involve this goat's head, ears &
neck.
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Dermatophilosis
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DermatophilosisThis smear from
the underside of a crust shows the
parallel arrangement of the organisms by Gram
stain.
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FootrotThis lame sheep is forced to graze on its limbs
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FootrotThe sole has been under run and perforated in several places.
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FootrotThe claws are deformed by a severe, chronic infection.
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Footrot Fly strike on the hoof of a sheep.
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Fungal Disease
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RingwormWool loss and erythema caused by dermatophytes.
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RingwormGoat skin with alopecia and crusting.