Demonstration of corn silage, made in Guimaëc (Finistère) on October 22 , 2015. A little known technique that has been around for 35 years. According to Yves -Marie Le Cozannet , it ensures less silage losses and reduced penalties butterfat milk. Saving time also more labor needed for placing and easy when desilage . The cost of the benefit is estimated at € 300 / ha.