| 摘要 |
1,202,047. Ruminant feeds. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 May, 1968 [2 June, 1967], No. 25500/67. Heading A2B. A non-protein nitrogen (NPN) feedstuff comprises a NPN compound, for example urea, biuret, ammonium sulphate, or ammonium phosphate, in admixture with water-soluble vegetable gum such as tragacanth, or arabic. A hydrophobic material, such as calcium stearate, may also be present. The composition may be prepared by mixing particles of the NPN compound with finely divided gum and aggregating the dry mixture by pelleting or rolling. Alternatively particulars of the NPN compound may be coated with a solution of the gum. The particles may then be aggregated and dried. Alternatively the components may be formed into a paste with water, which may be supplied in the form of molasses, and the paste then shaped and dried, for example by extrusion or sheeting. The paste may also include grain meal and spices. The dried products may be coated with a polymeric waterproof material, such as polyvinyl chloride or a copolymer thereof with polyvinyl acetate, for example by spraying with a solution thereof. |
