Deviations of nutrient digestibility of Johnsongrass hay rations as influenced by phenothiazine and feces drying process

Abstract

Feed efficiency and d a 1 y weight gain of livestock has improved tremendously in the last 50 years This may be attributed to better management practices, improved rations, improved breeding programs and through the introduction of synthetic hormones and drugs. Today, more meat is being produced on less feed than ever before. The present livestock industry is based largely on feeds that can also be used directly by humans and is thus in direct competition with the human population. In the face of an ever growing world food crisis, it is imperative that we explore every possible means of increasing our food supplies and utilizing them more efficiently.