Abstract: The present invention relates to a method of increasing the milk and/or meat quantity of silage-fed animals comprising the steps: a) treating plants and/or propagules and/or sites where the plants are growing or are to grow with at least one strobilurin compound b) producing silage from the plants treated according to step a) c) feeding the milk and/or meat producing animals with the silage produced according to step b) made from the plants treated according to step a). Furthermore, the present invention relates to silage for feeding animals, produced from plants treated with at least one strobilurin compound prior to producing said silage. In addition, the present invention relates to the use of at least one strobilurin compound to increase the milk quantity of silage-fed milk-producing animals. Moreover, the present invention relates to the use of at least one strobilurin compound to increase the meat quantity of silage-fed meat-producing animals.