Arena Racing Company's chief executive Martin Cruddace believes the suspension of racing will have "huge ramifications" for the sport.
ARC owns 16 British racecourses, including Doncaster - home of the traditional Flat season curtain-raiser, the Unibet Lincoln, which was due to be run on Saturday week - and Lingfield, which would have staged All-Weather Championships Finals Day on April 10.
Cruddace said:"We are obviously hugely disappointed to see racing suspended until at least the end of April, but the safety of all participants, as well as the wider society is paramount.
"Whilst we understand the decision, there is no doubt that the suspension of racing for this period, and possibly longer, will have huge ramifications for the entire ecosystem that racing supports and for the bookmaking industry also.
"We will now look to take every step to support our employees, the business and our partners in the betting industry in the short and long term, and make sure that we are ready to race again as soon as a fully analysed and risk assessed decision to do so is made."
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