UNIVERSITY PARK (Centre
Co.) For die first time, dairy
producers can sort sires based on
what’s really important to them:
production, udders, feet, and
semen price. New sire indices
based on a concept called
Expected Net Revenue (ENR)
estimate the net dollar return from
milk sales above semen price and
feed cost per strew of semen.
Designed by Gary W. Rogers,
assistant professor in Penn State’s
Department of Dairy and Animal
Science, the indices rank Holstein
bulls under three production
schemes. Type components
DK 122
• Multileaf Variety
« Superior yields
winterhardiness
• Multiple Pest Resistance, MPR
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Specht, Rogers Team
Dairy Program
On
remain constant for a particular
bull across the indices. This means
the bull’s ranking in any of the
three indices depends on the
weight given to particular produc
tion components. Dairy Today
will publish semi-annually the top
SO bulls nationwide.
“From a genetic standpoint,
indices are at least equal to and
usually superior to specific culling
levels,” says Rogers. "With high
performance bulls, high produc
tion can make up for some slightly
unfavorable traits.”
Commercial dairy producers
have looked to Penn State since
Empty This Bag.
DK 133
Adapted to an intensive cutting
schedule—will respond to the
way you farm
• Flowers earlier than DKI22 and DKI2S
to help spread your harvest work.
• Excellent late season production.
• High resistance to anthracnose, bacterial
wilt, Fusarium wilt and Phytopthora root
rot, plus resistance to Verticilium wilt
and Aphanomyces
• Good winterhardiness
• Plant on fertile low ground, light soils
or in stress conditions
• Excellent recovery rate after cutting
• Multileaf
• University of Wisconsin disease resist
ance rating: 24 out of 25
• Adapts to 4-cut system
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DeKalb Products Available For 1994
1976 for special sire/son evalua
tion indices, thanks to Larry W.
Specht, professor of Dairy Sci
ence, who initiated and maintains
the listings. Specht issues his Sire!
Son Report following release of
the USDA Animal Improvement
Programs Lab sire and cow evalu
ation summaries in January and
July. His Herd Prefix Report is %,
spin-off from his SirelSon Report
Both reports are available from
Lawrence W. Specht 324 Hen
ning Building, The Pennsylvania
State University, University Park,
PA 16802.
Pann Stata’a Larry W. Specht, (Ml), profassor of Dairy
Sclanca, and Gary W. Rogars, assistant professor of Dairy
and Animal Sclanca.
• Displays superior yields in Penn
State research trials
• Excellent winter hardiness
• Recovers quickly after cutting
• Highly resistant to bacterial wilt
and anthracnose
• Resistant to Bacterial Wilt, Fusarium
Wilt, Verdcillium Wilt, Phytopthora
Root Rot and Anthracnose
DK 125
DEKALB PLANT
GENETICS