Description of Research and Extension Interests
My research program involved improving utilization of nutrients provided by forages and by-product feeds in dairy rations. Current research projects include effective utilization of winter annual and perennial grass for lactating dairy cows, enhancing digestibility and utilization of whole cottonseed and other by-product feeds, protein and amino acid metabolism by lactating dairy cows, and reduction of heat stress through environmental and nutritional modification.
The focus of my extension program is on improving dairy producer returns though the use of good management practices and decision making. Programming is provided in the areas of forage production and management, nutrition, replacement heifer development, and cow comfort.
Selected Recent Publications
Worley, J. W. And J. K. Bernard. 2005. Use of high volume low speed (HVLS) fans for cooling dairy cows in a free stall barn in a hot humid climate. ASAE Paper No. 054112. ASAE, St. Joseph, MI.
Sullivan, H. M., J. K. Bernard, and H. A. Amos. 2005. Ruminal fermentation and amino acid flow in Holstein steers fed whole cottonseed with elevated concentrations of free fatty acid in the oil. J. Dairy Sci. 88:690-697.
Cooke, K. M. J. K. Bernard, 2005. Effect of kernel processing and theoretical length of cut of corn silage on performance of lactating dairy cows. J. Dairy Sci. 88:310-316.
Bernard, J. K., J. W. West, D. S. Trammell, and G. H. Cross. 2004. Influence of corn hybrid variety and cutting height on silage quality and performance of lactating dairy cows. J. Dairy Sci. 87:2172-2176.
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