1 -Caseous lymphadenitis.2 -Listeriosis.
3 -Brucella melitensis.4 -Brucella ovis.
5 -Actinobacillus and Histophilus spp.6 -Jhon’s disease.7 -Necrobacillosis.
8 -Salmonellosis.9 -Colibacillosis.10 -Pulpy kidney.
11-Struck and Braxy.12 -Lamb dysentery.
13 -Black disease.14 -Tetanus.15 -Black leg.
16 -Hemorrhagic pasteurellosis.17 -Pneumonic pasteurellosis
18 -Tuberculosis.
19 -Leptospirosis.20 -Pink eye.21 -Foot rot.
22 -Foot abscess.23 -Strawberry foot rot.24 -Campylobacteriosis.
25 -Actinobacillosis.26 -Dermatophillosis.27 -Staph dermatitis.
28 -Mastitis.29 -Yersinosis.
30 -Chlamydiosis.31 -Anaplasmosis.
32 -Eperythrozonosis.33 -Ring worm.
Abscess in a parotid lymph node and another node near the base of a wattle
Supramammary lymph nodes and other lymph nodes in the perineum are infected
Lamellated lesion in a goat lymph nodes (onion appearance)
Lesion in sheep liver and lymph node
Abscess in the liver
Abscess in sheep lung
Characteristic head tilt in a ewe
Facial paralysis with inability to masticate
Head pressing in affected sheep
Focal encephalomalacia and microabscessation in the brainstem
Facial paralysis in a lamb
A thickened, leathery placenta Focal necrotic lesions in the liver of a still birth lamb
Focal encephalomalacia and microabscessation in the brainstem
Facial paralysis in a lamb
A positive response to Brucelline allergic test in the
lower eye lidNecrotic cotyledons in retained
placenta
A stillborn with necrotic placenta
The right testis is severely atrophied in this chronic infection
Cross section of the testis and epididymis showing marked distension and fibrous thickening of the tail of the epididymis, while the testis is normal
Seminal fluid with ruptured macrophage filled with red staining Brucella organism
The affected epididymis (lower testis) is enlarged and the tunics is thickened. Actinobacillus seminis was isolated
the marked unilateral swelling and erythema. Histophilus ovis was
isolated
Swelling and crusts are associated with a draining fistula
Fibrosis and enlargement of the tail of the right epididymis due to Histophilus ovis. The left testis is atrophied.
Acid fast bacilli in ileal mucosa Ziehl-Neelsen stain
Chronic lymphangitis in the mesentery
An emaciated goat
Calcified lesions in an enlarged mesenteric lymph node
Complication of the disease by chronic salmonellosis
Sheep caecum infected with a pigmented strain
Sheep ileum infected with a pigmented strain
Focal liver abscess Abscess in the lung
Engorged liver with distention of the gall bladder
Enlarged posterior mesenteric lymph node (arrow) from which Salmonella organism can be cultivated late in the course of the disease
Hemorrhagic enteritis
Enterotoxigenic E. coli with adhesive pili (left) by electron microscope
Enterotoxigenic E. coli adhering to microvillus by electron
microscope
Necrotic cotton wool kidney cortex
Severe congested small intestine
Excessive pericardial fluid
Hemorrhagic enteritis in the Struck Focal hemorrhagic necrosis in the abomasum in the Braxy
Acute hemorrhagic enteritis Blood stained tail and hind quarter
A focal necrotic lesion in the liver
Characteristic rigidity in a recumbent ( opisthotonus)
Note the characteristic tail position
Note the blackened area of acute muscle necrosis
Pharyngeal and esophageal necrosis
Engorgement of subcutaneous vessels with focal hemorrhage
Acute abomasal ulceration Miliary foci in liver
Acute Fibrinous pleurisy and pneumonia
Complicated by abscess formation
acute necrotizing pneumonia in the cardiac lobe
Hebatisation of the lung in prolonged infection
N.B: Both sheep and goat are susceptible to tuberculosis, though the disease is fairly uncommon in these species
Miliary liver tubercles
cross section of an affected liver
Tubercle in the mesenteric lymph nodes
Pulmonary infection in a sheep
lung cut in section to show tubercle
Icteric carcass of an infected lamb discolored kidney due to excretion of
hemoglobin product
Peripheral neovascularisation induced by Mycoplasma conjunctiva
An advanced lesion in which the cornea is edematous and opaque
The conjunctiva is reddened and swollen with marked follicle formation
Central corneal opacity in the absence of other ocular changes is usually associated with Branhamella ovis
Advanced keratitis caused by Mycoplasma aglactiae
Moist interdigital and early under running of the sole
The axial wall is blackened and necrotic
This lame sheep is forced to graze on its knees as the infection spread
The claws are deformed by a severe, chronic infection
The sole has been under run and perforated in several places
Fly strike on the hoof of affected sheep
pus is draining at the coronary band
The combination of orf and Dermatophilus congolensis produces hemorrhagic, verrucose lesions
Pleurisy and pericarditis in a stillborn lamb
Multifocal necrosis in a still born lamb specially in the liver
Cotyledonary villi packed with cell free Campylobacter fetus subsp fetus organisms
Colitis in the lamb Transmission electron micrograph showing Campylobacter spp in apposition to the microvillus border
Large, yellow and encapsulated pyogranulomas in the lung ( occasional lesion in the lung)
Pus exudes from granulmatous facial lesions
Crusty, scaly lesion involve this goat’s head, ears and neck
Thick crust cover this goat’s dorsum after prolonged exposure to rain
Restriction of lesions to white areas suggests that infection induces photosensitivity
This smear from the underside of a crust shows the parallel arrangement of the organisms (Gram stain)
Wool fibers matted together by exudates (lumpy wool)
Alopecia and scaling on a goat’s ear A chronic ulcer on the fetlock
White pustules on the hairless areas
Acute mastitis in a goat, caused by Mycoplasma agalactiae ( contagious
agalactia)
Edema of the skin and discoloration of the udder parenchyma ( gangrenous
mastitis)
Note the purple discoloration of the udder and the limp teat ( gangrenous mastitis)
Histological section showing a large, red stained fibrin thrombus within an artery (gangrenous mastitis)
Histological section showing fibrin thrombi in blood vessels and cellular exudate filling acini (gangrenous mastitis)
Note the red, depressed healing tissue in several areas and the large masses of dark, necrotic tissue that have not yet sloughed, two weeks after the onset of gangrene (gangrenous mastitis)
The red fingers of tissue represent remnants of blood vessels encased in granulation tissue (gangrenous mastitis with sloughing)
The udder half on the left is firm and swollen and a draining fistula is evident (chronic staphylococcal mastitis)
The affected gland is distended with reddish liquid pus, while the other gland is atrophied (chronic staph mastitis)
This udder cross section shows inspissated pus and accumulation of Fibrinous tissue around the abscess (udder abscess)
Necrotic and diphtheritic colitis in a goat
Typical intercotyledonary thickening in a sheep placenta with yellowish surface deposits
Anaplasma marginalis in sheep red cells ( chromatin dot in the marginal of the cell)
Ring shaped bacillary or coccobacillary form attached to the surface of the red cells and some may be found in the plasma
Pink appearance of renal medulla due to haemosiderosis
Wool loss and erythema
Goat skin with alopecia and crusting