| 摘要 |
PROBLEM TO BE SOLVED: To obtain a double salt by treating a double salt from a basic amino acid, magnesium and phosphoric acid which are useful as a feed additive and not hydrolyzed in the rumen of a ruminant, but eluting the basic amino acid in the abomasum, with a polyvalent (divalent or trivalent) metal other than magnesium. SOLUTION: A salt of the formula (R is hydrogen cation of a basic amino acid; M is a m-valent metal other than magnesium; m is 2, 3; a is 0.05-1.0; b is 0.85-1.43; c is 0.02-0.6; d is 0-0.3; a+b×2+c×m+d=3; n is 0-20). Magnesium secondary phosphate is dispersed in an aqueous solution of an excessive amount of the basic amino acid and they are heated. The precipitate is washed to give this objective double salt at a molttr ratio of 0.8-1.0 of the basic amino acid, 1.0-1.1 of magnesium per mole of orthophosphoric acid. This salt is mixed with a polyvalent metal salt solution and separated to give the salt of formula I. |
