21.   While the feed was found to contain cattle remains, studies have shown that pigs and chickens cannot be infected with mad cow disease by eating infected cattle parts.

22.   With more shipments of older cattle to the stockyards in days ahead, the likelihood of finding more infected cattle in testing will increase.

23.   BSE has been transmitted to sheep experimentally through the feeding of small amounts of infected cattle brain.

24.   Earlier studies also failed to find prions in the meat of infected cattle, even though it was present in their brains and nerve tissue.

25.   Germany recorded its first case of mad cow disease last month, and the number of infected cattle is growing.

26.   However, the experts included United States and Canada with EU members Austria, Finland and Sweden, where the presence of infected cattle was unlikely but not excluded.

27.   In a sign that fears over mad cow disease may be waning, a French government agency Wednesday recommended vastly curtailing mass slaughter of potentially infected cattle herds.

28.   In fact, Bosnia has had no confirmed cases of mad cow disease, a brain-wasting illness that has infected cattle in many other European countries.

29.   Infected cattle are impossible for farmers and ranchers to detect.

30.   Infected cattle must be killed.