CDCB In The News

CDC delivers the latest news on genetic improvement, research and U.S. evaluations through its monthly newsletter, dairy media, and events.

Horn Fly Resistance Observed in Organic Holstein Cattle, Study Finds

Penn State University

November 16, 2021

UNIVERSITY PARK, Pa. — Some Holstein dairy cattle, particularly those with white coat coloration, naturally fend off the horn fly, a parasitic insect known to cause stress and disease in grazing cattle, according to new research conducted in Penn State’s College of Agricultural Sciences.


Lifetime Net Merit revised in August for balanced selection, profitable dairy cows

João Dürr, Ph.D. and Kristen Parker Gaddis and Paul VanRaden and Tom Lawlor and Rob Tempelman

July 2, 2021

Lifetime Net Merit (NM$) has driven genetic progress since 1994 by promoting a balanced selection of all available, economically-important traits to maximize profitability of dairy cows.


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