A definition has been developed to help with this determination. An important herd problem has been defined as an increase in mortality of equal to or more than the mean of historical mortality levels plus 1.66 times the standard deviation.
A definitionhas been developed to help with this determination. Animportant herd problem has been defined as an increasein mortality of equal to or more than the mean of historicalmortality levels plus 1.66 times the standarddeviation.