| 摘要 |
Novel zootechnical compositions comprising a mixture of an anabolisant steroid of the formula WHEREIN R is alkyl of 1 to 4 carbon atoms, Y is selected from the group consisting of hydrogen and saturated and unsaturated alkyl of 1 to 4 carbon atoms and X is selected from the group consisting of hydrogen, saturated and unsaturated alkyl of 1 to 6 carbon atoms, one of which may be replaced by an oxygen atom and acyl of an organic carboxylic acid of 1 to 18 carbon atoms and an estrogenic steroid of the formula WHEREIN R2 is alkyl of 1 to 4 carbon atoms, R1 is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms and cycloalkyl of 3 to 7 carbon atoms, A is selected from the group consisting of hydrogen and alkoxy of 1 to 4 carbon atoms, X1 is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, acyl of an organic carboxylic acid of 1 to 10 carbon atoms and aliphatic and cyclanic carbonic acid of 1 to 10 carbon atoms and Y1 is selected from the group consisting of hydrogen, methyl, ethynyl and haloethynyl and to a method of upgrading the meat of domestic animals such as cattle by administering the said compositions under the skin of domestic animals. |
