| 摘要 |
A process for increasing production in meat-producing, egg-laying or milk-producing animals comprising feeding a compound of the formula: <IMAGE> Formula I wherein R is a member selected from the group consisting of hydrogen, R4 wherein R4 is alkyl of from 1 to 8 carbon atoms, inclusive, including isomeric forms thereof, alkenyl of from 2 to 8 carbon atoms, inclusive, including isomeric forms thereof, cycloalkyl of from 3 to 7 carbon atoms, <IMAGE> and acyl wherein acyl is up to and including five carbon atoms. R1 is a member selected from the group consisting of hydrogen, R4, and <IMAGE> wherein R5 is selected from the group consisting of hydrogen; <IMAGE> and acyl wherein acyl is up to and including five carbon atoms; R2 and R3 are the same or different and are a member selected from the group consisting of hydrogen, provided that both R2 and R3 are not hydrogen; R4, cycloalkyl of from 3 to 8 carbon atoms, alkyl substituted cycloalkyl of the formula <IMAGE> wherein n is an integer of from 2 to 7, inclusive, and R7 is a member selected from the group consisting of hydrogen and alkyl of from 1 to 5 carbon atoms, inclusive, including isomeric forms thereof; alkenyl of from 2 to 8 carbon atoms, inclusive, including isomeric forms thereof, aralkyl wherein Ar is a member selected from the group consisting of phenyl, substituted phenyl wherein 1 or 2 hydrogens are replaced with chlorine, fluorine, bromine, iodine, R6, -OR6, or -CF3 and the substituents can be the same or different, and R6 is alkyl of from 1 to 4 carbon atoms, inclusive, including isomeric forms thereof, and R2 and R3 taken together with <IMAGE> is a heterocyclic moiety of from 4 to 8, inclusive, ring atoms and 1 or 2 hetero atoms selected from the group consisting of nitrogen, oxygen, or sulfur, or a substituted heterocyclic moiety wherein 1, 2, or 3 of the carbon atoms of the heterocycle are substituted with R4.
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