| 摘要 |
1,205,796. Poultry feeds. CIBA Ltd. 24 Oct., 1967 [26 Oct., 1966; 15 Sept., 1967], No. 48304/ 67. Heading A5B. Poultry feeds or poultry feed additives contain an amidine of formula in which Het represents a bivalent heterocyclic mononuclear or polynuclear radical aromatic in character comprising a 6-membered ring containing a nitrogen atom, a 6-membered and/ or 5-membered ring containing two nitrogen atoms, a 5-membered ring, possibly condensed with a 6-membered ring, containing a nitrogen atom and an oxygen or sulphur atom, a 5- membered ring containing two nitrogen atoms and an oxygen or sulphur atom or a 5- or 6- membered ring containing three nitrogen atoms, the radical Het being unsubstituted or substituted at a carbon atom by a C 1 -C 6 alkyl or alkoxy radical, a halogen atom, a trifluoromethyl group or a nitro group and/or being substituted at a nitrogen atom by a C 1 -C 6 alkyl or alkoxy radical, a halogen atom, a trifluoromethyl group or a nitro group and/or being substituted at a nitrogen atom by a C 1 -C 6 alkyl radical or an acyl radical, the radical Het being linked through a ring carbon atom to the amidine grouping of formula and through another ring carbon atom, in a position that activates a methyl group, to the nitrofurfuryl-idenemethyl grouping, R represents an open or cyclic amino group, R 3 represents H or a aliphatic, araliphatic or aromatic hydrocarbon radical, which araliphatic or aromatic hydrocarbon radical may be substituted in the aromatic ring by C 1 -C 6 alkoxy or trifluoromethyl groups or halogen atoms and R 4 represents a C 1 -C 6 alkyl radical or H. Conventional feed additives such as vitamins, e.g. Vitamin A, niacin, calcium pantothenate, thiamin, riboflavin, Vitamin B 12 , ascorbic acid, Vitamin D or Vitamin E; other essential additives e.g. butyloxytoluene or methionine; and antimicrobial agents, e.g. antibiotics such as bacitracin, penicillins, tetracyclin, chlorotetracyclin, oxytetracyclin and erythromycin. |
