Cattle forensics

Question 1

Significance of Bovine tuberculosis?

Answer 1

State veterinary measures: compulsory eradication prohibition of treatment or
vaccination
§ Diseased or infected: slaughter
§ Suspected of being infected: official surveillance, movement restrictions
§ Free status: legal characteristic
§ Herd of origin: significant for the whole herd (suspension of free status)

Question 2

Diagnosis of Bovine tuberculosis?

Answer 2

Veterinary institute: bacteriology, histopathology
§ Disease: clinical sings, post mortem lesions (pathology, meat inspection), isolation of
M. bovis (months!), positive intradermal tuberculin tests
§ Suspected of being diseased: positive intradermal tuberculin test

Question 3

Origin of Bovine brucellosis?

Answer 3

Thomsen-rule: the later in pregnancy the animal is infected, the sooner it aborts
§ Minimum 3 weeks
§ Positive serology: late pregnancy: 8 days
§ < 7th month of pregnancy: 3 weeks
§ Epizootic inquiry
§ Minimum 30 day-quarantine: examination on the first week and before release from
isolation

Question 4

Significance of Bovine brucellosis?

Answer 4

State veterinary measures: compulsory eradication
§ Prohibition of treatment or vaccination
§ Diseased or infected: slaughter
§ Suspected of being infected: official surveillance, movement restrictions
§ Free status: legal characteristic
§ Herd of origin: significant for the whole herd (suspension of free status)