Field Studies 24 ClampFilm hits the targets Dairy farmers Leo and Giles Rowland have been using ClampFilm, from Kelvin Cave Ltd., for the last 5 years to ‘vacuum seal’ the 4,000 tonnes of silage they require each year. The 350 cow Holstein herd’s ration is formulated on a base of grass and maize silage, so effective, waste-free preservation of these is essential to the herd’s 9,000 litre performance. Leo is happy to show off his maize and grass

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