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Genetic Evaluation & Production Information
January 2010
Top 100 Bull Rankings January 2010 (All Bulls Born in Last 25 Years)
Active AI List January 2010 - Production with links to pedigrees and web pages for each bull!
Active AI List January 2010 - Type
Young Sires Jan. 2010
Top 100 Heifers for PA CPI January 2010
Top 300 CPI Cows January 2010
Top CPI Daughters of :
Aaron Adacka Aliance Alstar Altanic Archie Bamboozle Bingo Bolero Challenge
Conrad Daunte Decision Double L Flash Glacier Goldust Goliath Grumpy Hudson
Legacy Les Lewis Magicman Masterpiece Mentor Mr America Nash Natural
Response Ronald Royalty Samson Showtime Silverado Skipper Spider Turley Yogi
Find a Bull by NAAB #
All-Time Class Leaders
What Bulls had the Most Daughters Scored?
What Bulls had the Most Daughters on Test?
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Guernsey PTI Formula (Updated Nov. 2006)
(25*(PTAP/14))+(25*(PTAF/19))+(10*(PTAT/.84))+(10*(UDC/.70))+(10*(FLC/.68))+
(10*(PL/2.39))+(3*(DPR/1.24))+(4*((3-SCS)/.17))+(3*(PTA Strength/0.95))
UDC and FLC should be rounded to the nearest 10th prior to use in the PTI formula
Udder Composite (UDC)
(.15*(FU/1.33))+(.15*(RH 1.24))+(.05*(RW/1.22))+(.15*(UC/.84))+(.33*(UD/1.53))+(.15*(TP/1.05))-(.02*(TL/1.11))
Foot & Leg Composite (FLC)
(.36*(RV/.42)) + (.48*(FA/.49)) - (.16*(RL/.65))
You MUST Be Kidding...What Do All These Numbers Mean?
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American Guernsey Association
7614 Slate Ridge Blvd.
Reynoldsburg, Ohio 43068
(614)864-2409
E-mail: sjohnson@usguernsey.com
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