An eighth horse has tested positive for morphine after an investigation sparked by suspected contaminated feed, the British Horseracing Authority has said. It emerged last month that seven horses, including the Queen's mare Estimate, had failed post-race samples. Seven of the cases - including the most recent - were "very similar", the BHA said in a statement on Monday. All of them "point to the source of the positive test being contaminated horse feed", the...
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