1.   Cows had to be doctored daily against screwworms, and the whole herd had to be dipped for ticks.

2.   McCasland said the long drives were to make up for detours the herd had to take several weeks ago because of high waters on the North Platte River.

3.   Now a dozen or so heir entire herd has to be destroyed.

4.   The entire herd had to be shot by state officials, though only nine elk were then found to be infected.

5.   The question is how high an incidence of mad cow disease would a herd have to have shown to become a candidate for extinction.

6.   Experts had asserted that the herd had only eight elephants.

7.   Since dairy herds had the most BSE problems, sales of dairy cattle for beef were banned.