George Eustice defends tests used on death row alpaca Geronimo

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The Environment Secretary George Eustice has defended a controversial decision to cull a Gloucestershire alpaca.

An order to put Geronimo down was passed by a High Court judge last week, after he previously tested positive for bovine tuberculosis (bTB).

His owner Helen Macdonald, who is a vet and alpaca breeder, disputes the results and has questioned the validity of the tests.

Speaking to ITV News West Country, she urged Mr Eustice to intervene in the case.

Geronimo has tested positive twice for the disease

He said his own farming family had suffered the "soul destroying" slaughter of a cherished cow, Rose, due to bTB but he underlined the need to prevent the spread of the "insidious" disease.

Writing in the Mail on Sunday, Mr Eustice said: "There has been a great deal of focus on the case of Geronimo the alpaca this week.

"However, each week on average, we have to remove more than 500 cattle from herds due to infection in England alone. Behind every one of those cases is a farmer who has suffered loss and tragedy.

"Farmers understand that infected animals are a risk to the remainder of their herd, so while the loss of individual animals is always a tragedy, the farming communities have worked with our Government vets in this arduous but necessary endeavour."

Helen pictured with Geronimo on their farm in Wickwar. Credit: PA

Mr Eustice said he first looked at Geronimo's case more than three years ago and has examined it several times since.

"Geronimo tested positive twice using a test called the 'Enferplex' test. It is the test that was requested by the British Alpaca Society at the time," he explained.

The test is "over 99% accurate with a 'false positive' in only 0.34% of cases", he said.

While it is accurate, it is not very sensitive - in around 30% of cases, it will not detect an infection even if the animal has TB.

A High Court judge ordered Geronimo to be put down. Credit: PA

"Two consecutive positive test results is a very strong indicator of the presence of the disease," he said.

Geronimo had four skin tests before he was exported from New Zealand, all of which were negative.

The animal then had two blood tests and a skin test in the UK which were all positive.

Ms Macdonald has claimed the UK tests carried out on the New Zealand-born male alpaca were inaccurate.

She told the PA news agency: "It's a total load of lies, the testing has never been validated."

She said if Mr Eustice is "willing to kill a healthy animal in front of the whole world without testing him properly first, then it's a sorry state of affairs".

"And it will be for the world to see. Because if he sends some poor person down here with a gun to shoot Geronimo then it will get filmed by the world's media," she added.