The purpose with this literature study was to investigate the possibilities for improvement of forage protein in dairy cows with focus on feeding strategies and conservation of forage protein. The utilization of forage protein in dairy cows is often not that efficient as it could be. The feed crude protein consists of both true proteins and non protein nitrogen. The digestion of proteins in the rumen depends on the protein degradation rate and the ability of the microbes to synthesize microbial protein. The microbes need a balance between carbohydrates that provide them with energy and proteins that are degradable in the rumen.

Produktfo?rsto?rande bakterier i mjo?lk fo?rsa?mrar kvalite?n och fo?rkortar dess ha?llbarhetstid. Det a?r da?rfo?r ba?de fo?r mejeriindustrin och fo?r konsumenten o?nskva?rt att ma?ngden produkt- fo?rsto?rande bakterier i mjo?lken a?r la?g. Syftet med denna o?versikt a?r att sammansta?lla litte- ratur som behandlar vilka produktfo?rsto?rande bakterier som finns i obehandlad och pasto?- riserad konsumtionsmjo?lk och mjo?lkprodukter, vilka problem de orsakar samt hur deras fo?rekomst kan fo?rebyggas.