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Salmonella Dublin associated with multiple abortions in cattle

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SRUC VS disease Surveillance headlines, October 2018

  • Abortion due to Salmonella enterica serovar Dublin in multiple dairy herds.

  • Histophilus somni septicaemia and laryngitis in a Charolais cross heifer.

  • Spinal cord lymphoma in a 26-month-old Charolais cross bullock.

  • Proliferative rhinitis due to Salmonella enterica subspecies diarizonae in a beltex tup.

  • Urethral obstruction and uroperitoneum in a boar.

The mean temperature in Scotland in October 2018 was 0.1°C above the 1981 to 2010 average. It was a dry month in the south but quite wet in the north west. Overall, rainfall was 93 per cent of average and sunshine was 111 per cent of average.

Cattle

Toxic conditions

Perth considered Quercus species (oak) toxicity to be the cause of death of a six-month-old Simmental bullock that was reported to be the only loss from a group of 50 calves at grass.

The intestinal contents were dark green and very watery, and the faeces were diarrhoeic. The rumen contained large numbers of oak leaves and the farmer confirmed that oak branches had fallen into the field during stormy weather.

Acorns and oak leaves contain nephrotoxic tannins that cause renal dysfunction when consumed in large quantities. Affected cattle commonly exhibit clinical signs such as anorexia, constipation, abdominal pain or diarrhoea for a number of days before death; however, this case was submitted as an apparent sudden death.

Generalised and systemic conditions

A 20-month-old Charolais cross heifer was purchased at a market and housed with 74 other animals sourced from multiple holdings. On arrival it was vaccinated with a live bovine herpesvirus 1 marker vaccine, an intranasal respiratory syncytial virus and parainfluenza 3 virus vaccine, and an autogenous Mycoplasma bovis vaccine.

About this report

This monthly summary is produced for Vet Record by Scotland’s Rural College Veterinary Services (SRUC VS) and is based on reports from its centres in Edinburgh, Perth, St Boswells, Ayr (Auchincruive), Dumfries, Aberdeen, Inverness and Thurso and in …

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