| 摘要 |
Agents for preserving and ensiling animal feedstuffs and which contain one or several furan or thiophene derivatives, and the use thereof. These furan or thiophene derivatives have the general formula <IMAGE> WHERE X denotes oxygen or sulfur, R denotes the radicals -CHO, -CN or -COOR3, or the vinylogous radicals -CH=CH-CHO, -CH=CH-C 3BOND N or -CH=CH-COOR3, R3 denoting hydrogen, a cation equivalent or alkyl of from 1 to 4 carbon atoms, and n denotes one of the integers 0, 1, 2 and 3.
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