E.H. Au

I. INTRODUCTIONIt has been shown that FP occurs in all housing systems, from conventional cages, to barn and free range systems (Green et al., 2000). However, there is a lack of data available on the true prevalence of FP in commercial free-range layer farms in Australia. In a survey in the UK, 65% of flocks showed FP during lay as reported by free-range farmers but, when the same flocks were asse ...