The Diurnal Variation of Urea in Cow’s Milk and how Milk Fat Content Storage and Preservation Affects Analysis by a Flow Injection Technique

摘要

Six Swedish Red and White dairy cows, producing 20-39 kg of 4% fat-corrected milk were given a ration balanced in energy and protein. They had access to feed from 05.15 to 09.00 and from 13.00 to 16.30 and were milked at 06.15 and 15.30. The milk was analysed for urea with a FIA technique.