
o not sell good cattle that test hot on an initial bangs test<br>depending on there cycle they may or may not, retest and a short <br>period of isolation may be required, but these females will usually <br>pass a second test, I have been through this, it generaly occurs when <br>heifers are near 12 monthes of age at time of vacination, in fact the new<br>vacine can be given up to 12 monthes but not after, we do everything before<br>8 monthes of age just to be safe, as our females are for long term breeding<br>and some are sold to other producers, I will try to get the name I have a group <br>of heifers comming due for shots & dehorns so I'll get the name of the new vac <br>and post it for you but I am almost shure it is the only one in use now in the U.S.<p>Michelle