Minnesota Public Radio slideshow:
Tracking livestock to prevent disease
<Previous1 2 3 4 5 Next>


As part of the National Animal Identification System, these cows would each receive a radio frequency ear tag containing a unique 15-digit identification number. (MPR Photo/Lorna Benson)

As part of the National Animal Identification System, these cows would each receive a radio frequency ear tag containing a unique 15-digit identification number.

(MPR Photo/Lorna Benson)
©2014 Minnesota Public Radio : Terms of Use