Age is in the eye of the beholder

Researchers at Kansas State University are working on a new cattle-age-verification method. The scientists are looking at cattle eye lenses — specifically lens weight and/or its nitrogen content — to determine whether it correlates with chronological age.

A relationship between the amount of eye nitrogen and the chronological age of pigs has been established, and these researchers want to find out whether the same is true in cattle.

Supporters hope the method will increase the number of cattle eligible for export.

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