Researchers at Penn State University have discovered a new genetic defect in Holstein cattle. A new haplotype potentially affecting calf well-being was discovered, that may result in calves that are weak and unable to stand at birth or shortly after.

This condition, currently known as calf recumbency, has found to be genetically more complex than other known faults. Some affected calves in the study were able to recover, but most did not survive beyond 6 weeks of age.