2 bacterial affections sheep

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