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John B. Cole and Daniel J. Null Animal Improvement Programs Laboratory Agricultural Research Service, USDA Beltsville, MD 20705-2350

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Presentation on theme: "John B. Cole and Daniel J. Null Animal Improvement Programs Laboratory Agricultural Research Service, USDA Beltsville, MD 20705-2350"— Presentation transcript:

1 John B. Cole and Daniel J. Null Animal Improvement Programs Laboratory Agricultural Research Service, USDA Beltsville, MD 20705-2350 john.cole@ars.usda.gov Genetic Evaluation of Age at First Calving

2 National Association of Animal Breeders, April 20, 2010 (2) Cole and Null Data First calving from January 1, 1997 to present Calving ages between 540 and 1105 days The cows sire had to be at least 5 years old 8,193,513 first calvings

3 National Association of Animal Breeders, April 20, 2010 (3) Cole and Null Model y = hys + a + e y = age at first calving hys = fixed effect of herd-year-season of birth a = random additive genetic effect e = random residual error

4 National Association of Animal Breeders, April 20, 2010 (4) Cole and Null Summary Statistics ― Cows currently milking Phenotypic Statistics BreedNMeanSDMinMax HO2,148,393763795401095 JE173,266721805401095 Genetic Statistics BreedNMeanSDMinMax HO2,148,393-0.102.03-1217 JE173,266-0.241.90-810

5 National Association of Animal Breeders, April 20, 2010 (5) Cole and Null Summary Statistics ― Active Bulls BreedNMeanSDMinMax HO732-1.073.03-1016 JE135-1.382.63-96

6 National Association of Animal Breeders, April 20, 2010 (6) Cole and Null Correlations TraitHOJE Milk-0.406-0.390 Fat-0.327-0.353 Protein-0.440-0.518 SCS-0.110-0.229 Daughter Pregnancy Rate-0.133-0.198 Productive Life-0.067-0.142 Cow Conception Rate-0.052-0.118 Heifer Conception Rate-0.330-0.181 Net Merit-0.343-0.380

7 National Association of Animal Breeders, April 20, 2010 (7) Cole and Null Correlations (Continued) TraitHO Maternal Calving Ease0.228 Sire Calving Ease0.101 Maternal Stillbirth0.168 Sire Stillbirth0.048

8 National Association of Animal Breeders, April 20, 2010 (8) Cole and Null Variance Component Estimates HO Heritability = 0.027 JE Heritability = 0.028

9 National Association of Animal Breeders, April 20, 2010 (9) Cole and Null Genetic Trend

10 National Association of Animal Breeders, April 20, 2010 (10) Cole and Null Genetic Trend

11 National Association of Animal Breeders, April 20, 2010 (11) Cole and Null Low Active HO Bulls NameAFC PTAAFC Rel STRAUSSDALE OS SHOWMAN-ET-9.60.38 BADGER-BLUFF FANNY FREDDIE-8.80.48 HURTGEN-VUE REALITY-RED-8.80.77 GRAF-ACRES MORRELL-ET-8.30.41 GG SPARTACUS-7.50.42 WINNING-WAY MYLES-ET-7.50.37 SANDY-VALLEY BOLTON-ET-7.40.97 RAN-RUE COLUMBIA-ET-7.30.37 SEAGULL-BAY DERRY-7.30.44 ROSSDALE RUDY ANTONIO-ET-7.30.91

12 National Association of Animal Breeders, April 20, 2010 (12) Cole and Null High Active HO Bulls NameAFC PTAAFC Rel EK-OSEEANA ASPEN-ET15.60.94 EK-OSEEANA SG ALLEGIANCE-ET9.90.78 CLAYTOP ADDICTION-RED-ET9.40.89 EK-OSEEANA ABSOLUTE LEE-ET9.00.58 DEWDROP-MEDO MAPLE-ET8.50.72 PEACHEY LEE TITUS7.60.75 OPSAL WILSTAR BWM DORY-ET7.10.65 HEATHER HOLME VELVET6.80.33 EXODUS PRECEPTIVE-ET5.90.45 REGANCREST DELLSTAR-ET5.90.59

13 National Association of Animal Breeders, April 20, 2010 (13) Cole and Null High and Low Active HO Bulls with > 90% rel NameAFC PTAAFC Rel SANDY-VALLEY BOLTON-ET-7.40.97 ROSSDALE RUDY ANTONIO-ET-7.30.91 O-BEE MANFRED JUSTICE-ET-7.20.99 JEWELED-ACRES SHARKY-ET-7.10.98 DE RITH CHASSEE-6.70.91 KLUMBS DURHAM PONTIAC3.70.98 CEDARWAL APTITUDE3.80.92 ROCKALLI BRADLEY4.30.97 KINGS-RANSOM MTOTO DTOTO-ET5.20.92 EK-OSEEANA ASPEN-ET15.60.94

14 National Association of Animal Breeders, April 20, 2010 (14) Cole and Null Low Active JE Bulls NameAFC PTAAFC Rel SUNSET CANYON MATINEE-9.30.90 SUNSET CANYON RP MILITIA-6.70.93 RICHIES JACE TBONE A364-6.50.93 DUTCH HOLLOW MISSILE-P-ET-6.40.47 FANPER TACO TUESDAY F2961-6.20.89 SUNSET CANYON MARINER-ET-6.20.86 BHF-SSF PARADE LOUIE-ET-6.10.31 OOMSDALE JACE GRAT GRIEVES-ET-6.00.64 FOREST GLEN MECCAS JEVON-ET-5.90.85 WF BROOK BOMBER-5.30.94

15 National Association of Animal Breeders, April 20, 2010 (15) Cole and Null High Active JE Bulls NameAFC PTAAFC Rel MAACKDAIRY REGION-ET6.00.46 VALLEYSTREAM JULIAN4.60.81 BOK B DANIEL LINETTE LUCKY4.10.65 NORSE STAR JACE TRIUMPH-ET3.90.49 BRIDON REMAKE COMERICA -ET3.30.81 SHF CENTURION SULTAN3.30.93 SCHULTZ DUDLEY RESTORE2.80.45 WF CENTURION SEIZE THE MOMENT-ET2.80.65 FOREST GLEN VD JADES JIMMIE-ET2.50.56 JENKS KHAN DO-ET2.50.51

16 National Association of Animal Breeders, April 20, 2010 (16) Cole and Null High and Low Active JE Bulls with > 90% rel NameAFC PTAAFC Rel SUNSET CANYON RP MILITIA-6.80.93 RICHIES JACE TBONE A364-6.50.93 WF BROOK BOMBER-5.20.94 SUNSET CANYON MAXIMUS-ET-4.00.96 FOREST GLEN AVERY ACTION-ET-3.80.97 O.F. MANNIX REBEL-ET0.10.97 MASON LEMVIG JACINTO-ET0.40.93 BW LEGION0.70.95 BW COUNTRY-ET1.50.95 SHF CENTURION SULTAN3.00.93

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