Atlas of pathology

Widespread subepithelial haemorrhages

Where: skin and subcutaneous tissue

Possible causes: Clostridium perfringensSalmonellosisClassical Swine FeverThrombocytopaenic purpuraAfrican swine fever

Thrombocytopaenic purpura is a type II hypersensitivity (or cytotoxic-type hypersensitivity) in which autoantibodies have been formed against thrombocytes. This results in their depletion and bleeding diathesis as its associated clinical sign. These autoantibodies may arise from blood transfusions, from the use of vaccines that contain blood products, or in multiparous sows that develop antibody against the alloantigens shared by the sire and the foetus. In the latter case, one would not expect clinical signs to appear in the sow since she would only produce antibody against cell-surface allotype antigens that are not found on her cells. The ingestion of these autoantibodies in the colostrum and their absorption by the piglets results in a fall in the circulating levels of thrombocytes.

The random effect of the condition in a litter appears to be related to growth and the ingestion of colostrum, well-grown piglets having sucked more colostrum being most severely affected.

Death may occur without clinical signs with good pigs found dead. If you look closely at the skin of these dead pigs, there should be haemorrhages wherever there has been bruising, teeth marks or trauma. Affected piglets are often pale and a blotchy, purple skin, haemorrhage, mainly on the belly, and vivid scratch marks may be seen. Mucous membranes are usually pale and there is no fever. Haemorrhages of varying sizes are seen in the epicardium, myocardium, pleura, joints and skeletal muscles. All lymph nodes are engorged with blood.

When a sow has produced such a litter, she should be culled or mated with a different boar at the next pregnancy.

Jesús Borobia
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

Mycoplasma 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 epidemic diarrhea

Porcine parvovirus infection

Porcine respiratory coronavirus infection

PRRS

Rotavirus infection

Swine pox

Swine vesicular disease

Teschen disease

Transmissible gastroenteritis

Diseases caused by parasites

Ascariasis

Coccidiosis

Mange

Metastrongylosis

Trichinellosis

Trichuriasis

Nutritional deficiencies

Biotin deficiency

Iron deficiency anemia

Mulberry heart disease

Osteoporosis, ricketts, Vit D deficiency

Toxicoses

Aflatoxicosis

Ergotism

Fumonisin toxicosis

Salt poisoning

Zearalenone toxicosis

Other

Atresia ani

Congenital Tremor

Epitheliogenesis imperfecta

Frostbite

Gastric ulcers

Hemorrhagic bowel syndrome

Hernias

Osteochondrosis

Other

Pityriasis rosea

Porcine stress syndrome

Prolapse of the vagina and cervix

Rectal prolapse

Rectal stricture

Shoulder ulcers

Splay leg

Sunburn

Thrombocytopaenic purpura

Torsion of the stomach and the intestines

Uterine Prolapse

Vice