Literaturverzeichnis
- Belasco , I. J. , Gribbins , M. F. and Kolterman , D. W. 1958 . The response of rumen microorganisms to pasture grasses and prickly pear cactus following foliar application of urea . J. Anim. Sci. , 17 : 209 – 217 .
- Bentley , O. G. , Klosterman , E. W. and Engle , P. 1955 . The use of urea to increase the crude protein content of corn silage for fattening steers . Ohio Agr. Exp. Stat. Res. Bull , 766 : 20
- Ferguson , W. J. 1948 . Effect of late nitrogenous topdressing on the digestibility of hay . J. Agr. Sci. , 38 : 33
- Gallup , W. D. , Pope , L. S. and Whitehair , C. K. 1952 . Rations factors affecting the utilization of urea nitrogen by lambs . J. Anim. Sci , 11 : 621
- Harris , L. E. and Mitchell , H. H. 1941 . The value of urea in the synthesis of protein in the paunch of the ruminant. I. In maitainence. II. In growth . J. Nutr , 22 : 167
- Markley , R. A. , Cason , J. L. and Baumgardt , B. R. 1959 . Effect on nitrogen fertilization or urea supplementation upon the digestibility of grass hays . J. Dairy Sci. , 42 : 144
- Means , R. H. 1945 . Urea added to sorghum silage increases value . Miss. Farm Res. (Miss. Stat.) , 8 ( 5 ) : 7
- Modjanow , A. W. , Kosmanischwili , A. G. and Kisseljow , Je. W. 1958 . Harnstoff und Ammonsulfat als Quelle zur Anreicherung von Maissilage . Tierzucht , 20 ( 7 ) : 20 – 26 .
- Ritzman , E. G. and Colovos , N. F. 1930 . Surface areas of sheep . N. H. Agr. Exp. Stat. Circ , 30 : 8
- Wetterau , H. and Holzschuh , W. 1959 . Zweckmäßige Ergänzung der Maissilage durch Amidschnitzel . Jb. Arbeitsgem. f. Fütterungsberatung , 2 (z. Zt. im Druck)