Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)


In 1902 there were undertaken at the Iowa Agricultural Experiment Station some investigations of the merits of "blue-gray" cross··bred cattle as feeding and market animals. The "blue-gray" color is caused by an intimate intermingling of black and white hairs on the body, a condition seen in cattle, horses and (rarely) in swine, and referred to by stock breeders as "blue·roan." The blue-gray color is not typical for any recognized breed of cattle and is most commonly produced by crossing a white Shorthorn bull on cows of the black Scotch breeds, namely the Aberdeen Angus or the Galloway-usually the latter.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.