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These new efficiency ratings could help dairy farmers make better use of their nitrogen in the face of escalating costs and increasing nutrient regulation. Farmers feed nitrogen in the form of crude protein to their cows, and apply manure and nitrogen fertilizer to grow crops and pasture for cows to eat and convert to milk.
The scientists found that only about 20 to 35 percent of the nitrogen fed to dairy cows is converted into milk. They also discovered that 16 to 77 percent of the nitrogen in manure or fertilizer is necessary for grass and other pasture plants. And their study showed that between 8 and 64 percent of all the nitrogen applied to typical commercial dairy farms is converted into farm products.
Originally posted by sandri_90
Ok, up until now I didn`t know they feed nitrogen to cows.