OCR Text |
Show Ground Hogs' Hoofs Make Protein Feed Supplement Swine hoofs, waste product pf packing plants, can make a good protein supplement for animal feeding feed-ing when finely ground and mixed with other protein feeds, Gordon Newell and C. A. Elvehjem, research re-search men at the U. of W., found. It will probably not be practical to use hoof powder as the only pro-I pro-I tein supplement, since apparently it I mast be used in large amounts as about 30 per cent of the ration to get good results in chick rations. Indications are that hoof powder "teams" very well with soybean oil-meal, oil-meal, the most popular and economical econom-ical of present-day supplements. Neither is a complete protein, each being low in certain amino acids, but one helps supply what the other lacks. Hoof material is low in histidine, methionine and tryptophane, since additional amounts of these amino acids improved it so as to give good results when fed as 18 per cent of the ration. Powdered hoof obtained thus far has proved to be a variable product, some samples being quite unsatisfactory. unsatis-factory. Evidently methods of processing pro-cessing it need to be standardized. Thus far packing houses have not seen their way clear to prepare powdered pow-dered hoof for the feed market. They are interested, but the shortage short-age of labor and equipment is a formidable obstacle in launching new sidelines at present. |