Effects of Mineral and NPN on Rumen Fermentation Using Artificial Rumen;

Milk somatic cell counts(SCC),total protein content,nonprotein nitrogen(NPN) and milk urea nitrogen(MUN) content were determined.

A trial with nine ruminanlly cannulated wethers were allocated to three dietary treatments in a completely random design to estimate the effects of non-protein nitrogen (NPN) on digestion and metobalism and the amino acids (AA) contents in gastrointestinal tract in goats.

Time-related concentration changes of non-protein nitrogen (NPN) and free amino acids (FAA) in biceps femoris during processing were assayed.

Time-related concentration changes of non-protein nitrogen(NPN) and free amino acid(FAA) in duck breast meat during processing were assayed.

The effects of non-protein nitrogen used in poultry diets,and factors influencing its effect were reviewed.

The total nitrogen, nonprotein nitrogen and nitrate content of wheat during winter were all decreased as the soil available molybdenum content was improved, but these contents did not change any more while the soil available molybdenum reached 0.

Through to ruminant livestock nutrition physiology the understanding,elaborated how enhances the feed protein and the nonprotein nitrogen in ruminant livestock production the use efficiency.