High nitrogen intake may be an environmental, animal health & fertility and milk processability problem when high quality grass diets such as spring pasture in Ireland or early cut grass-clover silage in Finland are fed as the basal diet to dairy cows. An innovative solution would be supplementing the diets with wood-derived hemicellulose products (HEMI) or other novel supplements instead of conventional concentrate components. HEMI contains virtually no nitrogen and would thus reduce nitrogen intake with expected positive impacts. Further, this product would bring a new wood-derived raw material into the dairy cow diets, which in regard with the growing demand of food from the increasing world population would be very welcome. Based on in vitro incubations, some HEMI products were readily fermentable by rumen microbes, although the digestibility by sheep was somewhat lower than expected, possibly due to high passage rate from rumen. Hemi could also succesfully be used as a liquid feed in a pilot scale study using cows. The scope of the project was widened to include also other means of supplementing grazing (Ireland) and exploring the possibility of using novel legumes as feeds (Finland) for dairy cows. Novel options provide useful means which can be used at dairy farms to increase the competitiviness and to take full advantage of the resources on the farm.
Vastaava tutkija
Rinne Marketta Hankkeen kesto 2011 - 2014
Asiasanat
milk processability, milk production, nitrogen use efficiency, hemicellulose, wood
Hankkeen vaihe: Päättynyt
HUOM! Tämä tutkimushankekuvaus on tuotettu Hankehaaviin Maa- ja elintarviketalouden tutkimuskeskuksen tutkimustietojärjestelmästä, jota ei enää ylläpidetä. Tarkista ajantaiset tutkimushanketiedot Luonnonvarakeskus Luken järjestelmästä.
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