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Supplemental Value Of Feed Grade Biuret And Urea-Molasses For Cows On Dry Winter Grass, Ivan G. Rush, Robert Totusek
Supplemental Value Of Feed Grade Biuret And Urea-Molasses For Cows On Dry Winter Grass, Ivan G. Rush, Robert Totusek
Panhandle Research and Extension Center
Four trials were conducted to evaluate the supplemental value of feed grade biuret (in dry supplements) and urea (in liquid urea-molasses mixtures) when compared to natural protein and urea in dry supplements for beef cows grazing low quality dry winter range grass. Urea or feed grade biuret provided 50% of the nitrogen in 30% CP dry supplements and urea provided 50% of the nitrogen in 30% CP dry supplements and urea provided 94% of the nitrogen in 30% CP liquid supplements. Dry supplements were self-fed with salt added to limit intake.
Winter weight loss of cows fed dry urea-containing supplements …
Evaluation Of Beef Cattle Range Supplements Containing Urea And Biuret, Ivan G. Rush, R. R. Johnson, Robert Totusek
Evaluation Of Beef Cattle Range Supplements Containing Urea And Biuret, Ivan G. Rush, R. R. Johnson, Robert Totusek
Panhandle Research and Extension Center
Two winter trials were conducted with 304 lactating range cows on dry grass to evaluate non-protein-nitrogen (NPN) in 30% protein supplements containing biuret (pure and feed grade), urea and extruded grain-urea. The NPN sources contributed one-half of the supplemental nitrogen with natural 15 and 30% protein supplements serving as negative and positive controls.
Winter weight loss of cows was greater (P~.02) on the negative than on the positive control in both trials. The apparent utilization of all NPN sources was low and the utilization of urea and extruded grain-urea was less than pure or feed grade biuret. Rumen biuretolytic activity …