Western Kansas Agricultural Research Centers
Beef Cattle Science

JJaeger>Ultrasound Technology
Ultrasound Research - Agricultural Research Center 

Current Projects

2012 - Limit-feeding concentrate diets to beef cows as an alternative to feeding hay
During drought forage production is reduced and hay prices are typically high. Comparison of grain and forage prices on a cost per unit of energy (net energy of maintenance or TDN) may reveal that it is less expensive to supply nutrients to maintain and grow cattle by feeding concentrate feeds rather than roughage. Only a small amount of roughage is fed in conjunction with the concentrate portion of the diet,  resulting in a nutrient dense diet. It is important to note that although the cow or calf is being fed a smaller amount of feed they will be receiving the same amount of nutrients as if they had consumed their diet by being allowed to graze or fed ad libitum hay.


2012 - Daytime Calving
Stimulating more cows to give birth during daylight hours can be accomplished by late afternoon or evening feeding. Research conducted at the K-State Agricultural Research Center in Hays demonstrated that when cows were fed daily between 4 p.m. and 6 p.m. 85% of their calves were born between 6 a.m. and 6 p.m. In addition, it was observed that cows which calved during daylight hours tended to give birth during daylight hours in future years.

2011 - Jaeger on K-State Radio Network
John Jaeger highlights recent research on replacement heifer development using two unique rations.  Listen to the Interview, (MPG3).

2006 - John Jaeger interview highlighting accomplishments
K-State beef scientist John Jaeger talks about various approaches to reducing odor from beef feedlots.  Jaeger is the new beef cattle scientist at the Agricultural Research Center at Hays.  He has been in his position since Jan 1, 2006.  Listen to the interview, (Windows Media Player Required).


John Jaeger
Beef Cattle Scientist
785-625-3425 x 211
Beef Cattle Science Homepage