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Professor David Barrett - University of Bristol. Bristol, , GB

Professor David Barrett Professor David Barrett

Professor of Bovine Medicine, Production and Reproduction | University of Bristol


Specialist in medical treatment of cattle on farms, antimicrobial resistance

Areas of Expertise (6)

Cattle Disease

Bovine Medicine




Animal Production


Professor David Barrett specialises in the use of medicines used by farmers and vets to treat cattle. He is involved in significant work on antimicrobial resistance as well as the recording of medicine use on farms, the attitudes of farmers towards complementary medicines, the impact of animal production methods on food safety, and the responsible use of animal medicines.

Professor Barrett is a former President of the British Cattle Veterinary Association, has been the Editor of the journal Cattle Practice, and is a current member of the editorial boards of The Veterinary Journal and Livestock. He is also a Fellow of the Royal College of Veterinary Surgeons.






Working together towards responsible antimicrobial use AMR in the UK: Vets & Farmers Working Together



Education (1)

University of Bristol: B.V.Sc., Veterinary Medicine 1990

Media Appearances (3)

Study reveals how buying in cattle can connect a holding to more than 1,000 farms

Farmers Weekly  online


Professor David Barrett, from the Bristol Veterinary School and British Cattle Veterinary Association President, said the paper underlined the risks farmers take when trading cattle and the possible impact animal movements have on the spread of disease such as bTB.

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New BCVA president takes over chains

Vet Times  online


Reflecting on his time in office, Prof David Barrett said: “It’s been a great honour to hold the role of BCVA president over the past 12 months and to have achieved so much as an association, culminating in a truly great congress in Southport last week.

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Bristol Vet School gets welfare-friendly building

Farmers Weekly  online


“The old shed was originally designed for around 40 cows, with a three-a-side tandem parlour,” says David Barrett, professor of bovine medicine, production and reproduction. “Like many farms, it was expanded over the years, ending up with 77 cubicles and straw yards housing 110 cows that were milked through a 30-year-old 12:12 herringbone. There were a lot of health problems, and it simply wasn’t commercially viable.”

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Articles (5)

‘Antibiotic footprint’ as a communication tool to aid reduction of antibiotic consumption

Journal of Antimicrobial Chemotherapy

2019 ‘Superbugs’, bacteria that have become resistant to antibiotics, have been in numerous media headlines, raising awareness of antibiotic resistance and leading to multiple action plans from policymakers worldwide. However, many commonly used terms, such as ‘the war against superbugs’, risk misleading people to request ‘new’ or ‘stronger’ antibiotics from their doctors, veterinary surgeons or pharmacists, rather than addressing a fundamental issue: the misuse and overuse of antibiotics in humans and animals.

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Changing farmer and veterinarian behaviour around antimicrobial use


2019 Slowing the development of antimicrobial resistance (AMR) requires reducing antimicrobial use (AMU), which necessitates altering prescribing practices and reducing use in food-producing species. The literature has suggested for many years that we should try a different approach to changing practices on farm and calls for more farmer-led initiatives compared with traditional, passive knowledge transfer that commonly occurs in the veterinary profession.

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Little association between birth weight and health of preweaned dairy calves

BMJ Journals

2019 Intrauterine growth retardation (IUGR) may result in reduced birthweight and detrimental physiological alterations in neonates. This prospective cohort study was designed to assess if there exists an association between birthweight of dairy calves and incidence of bovine respiratory disease (BRD), neonatal calf diarrhoea (NCD) or mortality during the pre-weaning period. Calves (n=476) on 3 farms in South West England were weighed at birth.

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Storage of prescription veterinary medicines on UK dairy farms: a cross-sectional study

The Veterinary Record

2019 Prescription veterinary medicine (PVM) use in the UK is an area of increasing focus for the veterinary profession. While many studies measure antimicrobial use on dairy farms, none report the quantity of antimicrobials stored on farms, nor the ways in which they are stored. The majority of PVM treatments occur in the absence of the prescribing veterinarian, yet there is an identifiable knowledge gap surrounding PVM use and farmer decision making.

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Characterisation of AmpC Hyper-Producing Escherichia coli from Humans and Dairy Farms Collected in Parallel in the Same Geographical Region


2019 To characterise putative AmpC hyper-producing 3rd generation cephalosporin-resistant E. coli from dairy farms and their phylogenetic relationships as well as to identify risk factors for their presence; to assess evidence for their zoonotic transmission into the local human population.

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