there is no problem martin each to there own , just if your presenting a carcass or a joint to a friend or customer it should not be covered in blood and hair , in a abattoir animals ask not shot with high velocity rifles through the chest so its hard to compare them.you say your a HACCP manager you should know to clean as you go, ie hands, knife s ,saws etc .your block is covered in blood and hair as your hands knife etc ,i am a trained butcher a family business and know how to present a nice joint of venison or beef . my point was a small one