Atlas of pathology

Aero chocolate liver

Where: digestive system, liver

Differential diagnosis: Clostridium novyi

At post mortem examination, with the carcass still warm, there was blood stained fluid in the abdomen and the liver was in advanced decomposition with aeriation (aero chocolate liver). There was a pungent decomposing smell emanating from the abdomen

The condition is due to toxins produced by Cl novyi which is present in the small intestine and ascends the bile duct. There was mild small intestinal inflamation in this animal

The disease is a common if sporadic cause of death in adult sows especially in late gestation in good condition. The disease tends to occur more frequently in warm weather. It can also be seen in finishing pigs close to slaughter especially those fed wet co-products

It can be confirmed by FAT or PCR testing of the liver.

Similar liver changes can be seen at post mortem examination if the animal has been dead for more than 12-18 hours as part ofthe normal decomposition process. The condition should therefore only be diagnosed on the freshest of carcasses.

If necessary a multivalent Clostridial vaccine can be used but attention to feeding hygiene, avoiding excessive sow condition and good control of environmental temperatures can all reduce the risk.

Mark White
Where

cardiovascular system

digestive system

intestines

liver

mouth

stomach

genitourinary system

bladder

female genitourinay tract

kidney

male genitourinay tract

mammary gland

lymphatic system

lymph nodes

spleen

thymus

tonsils

musculoskeletal system

nervous system

other

respiratory system

lungs

nasal cavity

skin and subcutaneous tissue

Disease

Diseases caused by bacteria

App

Clostridium novyi

Clostridium perfringens

Mycoplasma suis

Actinobacillosis

Anthrax

Atrophic Rhinitis

Bordetelosis

Brucellosis

Colibacillosis

Colitis

Edema disease

Enzootic Pneumonia (EP)

Erysipela

Exudative Epidermitis

Glässer disease

Ileitis

Leptospirosis

Mycoplasmal arthritis

Pasteurellosis

Salmonellosis

Streptococcal infections

Swine dysentery

Tuberculosis

Yersinia infection

Diseases caused by virus

African swine fever

Aujeszky's disease

Blue eye disease

Classical Swine Fever

Encephalomyocarditis

Foot-and-mouth disease

Influenza

Japanese B Encephalitis

Nipah virus disease

Porcine circovirosis

Porcine cytomegalovirus infection

Porcine parvovirus infection

Porcine respiratory coronavirus infection

PRRS

Rotavirus infection

Diseases caused by parasites

Ascariasis

Coccidiosis

Mange

Metastrongylosis

Trichinellosis

Trichuriasis

Other

Epitheliogenesis imperfecta

Frostbite

Gastric ulcers

Hernias

Osteochondrosis

Other

Pityriasis rosea

Rectal prolapse

Shoulder ulcers

Splay leg

Sunburn

Thrombocytopaenic purpura

Torsion of the stomach and the intestines

Vice

Nutritional deficiencies

Biotin deficiency

Mulberry heart disease

Toxicoses

Aflatoxicosis

Ergotism

Fumonisin toxicosis

Zearalenone toxicosis