934F Animal Sciences
1675 Observatory Drive
Madison, WI 53706-1284
Principal Research Interest:
Professor Combs conducts research in forage utilization and ruminal digestion of fiber by dairy cows. He researches the utilization of pastures and development of energy and protein supplement programs for grazing cattle as well as the intake regulation in high producing dairy cows.
Krause KM, Combs DK. Effects of forage particle size, forage source, and grain fermentability on performance and ruminal pH in midlactation cows. J Dairy Sci. 2003 Apr;86(4):1382-97.
Krause KM, Combs DK, Beauchemin KA. Effects of increasing levels of refined cornstarch in the diet of lactating dairy cows on performance and ruminal pH. J Dairy Sci. 2003 Apr;86(4):1341-53.
Sangsritavong S, Combs DK, Sartori R, Armentano LE, Wiltbank MC. High feed intake increases liver blood flow and metabolism of progesterone and estradiol-17beta in dairy cattle. J Dairy Sci. 2002 Nov;85(11):2831-42.
Krause KM, Combs DK, Beauchemin KA. Effects of forage particle size and grain fermentability in midlactation cows. II. Ruminal pH and chewing activity. J Dairy Sci. 2002 Aug;85(8):1947-57.