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VLA SURVEILLANCE REPORT
Ryegrass staggers diagnosed in an organic dairy herd

Abstract

  • Ryegrass staggers affecting an organic dairy herd fed purchased meadow hay

  • Otitis externa/media in calves caused by Mycoplasma bovis

  • Hypocalcaemia causing losses in ewes

  • Botulism diagnosed as the cause of death of 25 of a flock of 50 sheep

  • Asphalt toxicity in piglets

  • Avian encephalomyelitis virus causing disease in 21-day-old layer chicks

— These are among matters discussed in the Veterinary Laboratories Agency's (vla's) disease surveillance report for England and Wales for January

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