N C Shepherd

SUMMARY The 1974 epizootic of congenital bovine arthrogryposis/hydranencephaly syndrome in south-eastern New South Wales afforded the opportunity to study the pathology, serology and virology of field cases from the outbreak. For ease of description, the lesions observed were grouped into 5 stages which possibly approximate to the gestational age of the foetus at the time of initial insult Group 1: calves born incoordinate and microscopic examination revealed a universal mild to moderate ...

Epizootics of congenital neurological defects in calves have been recorded at various intervals in south eastern New South Wales for over 40 years. In 1974 a particularly severe outbreak occurred. Field observations of the clinical entities, their time of appearance, distribution and incidence were recorded in an attempt to determine an epidemiological pattern. The neurological entities observed occupied different time spans in the epizootic, the order of appearance being ...