McKinnon, Bill R.Hall, John B.Covey, Thomas W.Greiner, Scott P.2013-07-302013-07-302001http://hdl.handle.net/10919/23423[4] p.application/pdfenVirginia Cooperative Extension materials are available for public use, re-print, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.LD5655 .A762 no. 400-791Cattle -- ReproductionExtension publication