Feed nutritionists say crayfish-sourced feed would therefore contain high percentages of calcium and minerals . BOCM Pauls 's Hebat Abdel Hadi spent time with the Nile River fishermen in UK . Egypt is experiencing a crayfish invasion along Nile . Crayfish have been a problem for fishermen , but now used in chicken feed .
BOCM Pauls 's Hebat Abdel Hadi spent time with the Nile River fishermen in UK . Egypt is experiencing a crayfish invasion along Nile . Crayfish have been a problem for fishermen , but now used in chicken feed .