Modern Farming

Bryan Thornburgh applies a tag to the ear of a calf at Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Calves head back to the field after receiving tags, a weaning device and vaccines at the Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Tony Zerrusem watches as SIerra Harper vaccinates a calf at Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Stephanie Buchanan waits alongside calves in the head chute at the Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Tony Zerrusem, left, and Donnie Ackerman adorn a calf with a weaning device at Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Whitney Schreckenberg applies a tag to the ear of a calf at Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

A calf waits to be released from the head chute after receiving tags, a weaning device and vaccines at the Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Southeast Missouri State University students gather around the head chute while applying tags, weaning devices and giving vaccines to calves at the David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Stephanie Buchanan, left, and Danielle Greenemay wait alongside calves in the head chute at the Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Southeast Missouri State University student Christine Parry traps a calf in the head chute for her and her fellow students to apply tags, weaning devices and to vaccinate calves at the David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)

Tony Zerrusem helps Christina Parry trap a calf in the head chute at Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. The calves recieve vaccines, ear tags and weaning devices while in the head shoot. (Laura Simon)

A calf waits in line to receive tags, a weaning device and vaccines at the Southeast Missouri State University's David M. Barton Agriculture Research Center in Gordonville. (Laura Simon)