Nutrient management is an issue in many parts of the world. In the United States, nitrogen (N) and phosphorus (P) are the nutrients currently regulated. A full lactation study was done, examining different protein feeding strategies for dairy cows. Milk production was similar among three treatments, even though total N intake was 25 kg less and manure N excretion decreased 21 kg on one of the treatments. A 3-lactation study found that decreasing P from 0.47% to 0.39% of the total diet did not affect milk production.1-7-1 A 5-year field study in a commercial dairy herd reported a 17% decrease in manure N excretion even though animal numbers increased by 33%. P excretion decreased by 28% during this same period. Milk production per cow increased by about 9% during this same time. These results indicate that there are opportunities to reduce nutrient excretion to the environment in dairy herds without decreasing milk production.
Was this article helpful?
All Natural Immune Boosters Proven To Fight Infection, Disease And More. Discover A Natural, Safe Effective Way To Boost Your Immune System Using Ingredients From Your Kitchen Cupboard. The only common sense, no holds barred guide to hit the market today no gimmicks, no pills, just old fashioned common sense remedies to cure colds, influenza, viral infections and more.