| 摘要 |
In order to increase rate of growth and activity of rumen microorganisms, there is incorporated in ruminant feed a small proportion, 0.001-0.005 of the solid feed, of a non-toxic, chelated trace element compound, the trace element being at least one of iron, cobalt, copper, manganese, molybdenum, zinc, iodine. Chelating or sequestering agents are ethylene diamine tetraacetic acid and its mono- and di-sodium salts, succinic, malic, aspartic, citric and tartaric acids, and amino acids and peptides such as diglycine, triglycine and alanylglycine. It is preferred that calcium and magnesium also are supplied in chelated form. The structures of a calcium EDTA, EDTA-cobalt chloride and dimethyl glyoximo copper are set out. A supplement for deficiencies in a beef cattle area is: CoSO4, 7H2O-4; CuSO4,5H2O-5; MnSO4,H2O-6; FeSO4,7H2O-7; ZnSO4,H2O-3; chelating agent -74, and, if desired, KI-1. The procedure renders feeds of low digestibility, e.g. cotton gin waste, bagasse, pineapple waste, more available, such feeds being ground, mixed with molasses and pressed into blocks or pelleted. |
