The Collaborative International Dictionary of English v.0.48:

Ensilage \En"si*lage\, n. [F.; pref. en- (L. in) + silo. See
   Silo.]
   1. The process of preserving fodder (such as cornstalks, rye,
      oats, millet, etc.) by compressing it while green and
      fresh in a pit or vat called a silo, where it is kept
      covered from the air; as, the ensilage of fodder.
      [1913 Webster]

   2. The fodder preserved in a silo.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ensilage \En"si*lage\, v. t. [imp. & p. p. Ensilaged; p. pr. &
   vb. n. Ensilaging.]
   To preserve in a silo; as, to ensilage cornstalks.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ensilage
    n 1: fodder harvested while green and kept succulent by partial
         fermentation as in a silo [syn: silage, ensilage]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "ensilage":
   barley, bird seed, bran, cat food, chicken feed, chop, corn,
   dog food, eatage, feed, fodder, forage, grain, hay, mash, meal,
   oats, pasturage, pasture, pet food, provender, scratch,
   scratch feed, silage, slops, straw, swill, wheat