New method for testing stress in sheep
The study showed sheep in the upper decks were described as more alert, curious and aware than sheep in the lower decks.
Scientists in Australia have come up with a new method for testing stress levels in sheep during road transportation.
Traditionally, stress levels are measured using physiological responses, such as increased heart rate and cortisol levels.
A new method using behavioural measures, referred to as qualitative behavioural assessment (QBA), was discussed at the Australian Veterinary Association's annual conference this week.
Dr Teresa Collins from Murdoch University, Australia, said it is not always practical to carry out physical examinations of sheep during journeys.
Researchers at the university watched video footage of sheep taken during transportation and observed their body language. Their behaviour was scored using descriptions such as calm, comfortable, agitated or nervous.
"The study showed sheep were affected by the type of crate and deck level," Dr Collins said. "For example, those transported in the upper decks were described as more alert, curious and aware than sheep in the lower decks."
Dr Collins said the QBA could be used to detect stress in sheep and indicate changes that could be made to transport facilities to maximise the welfare of the animal. It could even "assist in promoting best practice guidelines for industry."
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