B&D Genetics is now offering straws from disease-tested bucks. These have been quarantined and have tested negative prior to collection for Johne’s, Border Disease, CAE, and CL diseases. Look for the disease tested seal. For more information about our testing services, contact us today! Straws with the blue, Delta Livestock Diagnostics tested seal are for domestic sale only, straws with the green international tested seal are approved for both international and domestic sale.