Top 10 sires with most daughters registered in 2012

Seth Johnson listed the 10 sires with most daughters registered in the USA in 2012 in the April AGA Journal, he commented that 9/10 are “Proven” sires and 8/10 are A2xA2 and accounted for 28% of heifers registered.

In England& Wales a different picture emerges with 7/10 most popular bulls are young bulls and they account for 42% of the heifers registered. What is interesting is that the average merit of the two groups is almost identical.

  Milk F+P kgs Fat% Prot% SCC Leg/Ft Mamm GMI
UK Bulls 344.0 26.1 0.0 -0.1 -3.0 0.6 1.5 236
US Bulls 373 25.2 -0.04 -0.05 3 2.1 1.1 236

The US breeders do have the reassurance of using proven bulls but are not making any greater genetic gain .

  Dtrs % of Births Milk Fat+Prot Fat% Prot% SCC FI Ft/Leg Mamm PLI GMI
Meadowcourt Ellys Eric 59/69 8% 409 32.8 0.05 -0.07   -2.8 0.78 1.25 67 230
Pine Ridge Double L 44 /104 6% 127 13.7 0.13 -0.07 -9 -1.2 1.1 2.5 78 159
Flambeau M YB Lyndell 33 /46 4.40% 390 32.9 0.06 -0.05 -3 -1.8 0.8 1.98 120 340
Jens Gold Aaron Crunch 32/55 4.30% 165 15.1 0.05 -0.02 -4 -7.2 1.11 1.89 11 188
Skeel Norman 30/34 4% 271 27.2 0.06 0.03   -2.7 0.25 0.48 56 265
Beechgroves Ezra 28/30 3.75% 288 33.7 0.15 0.03   -2.8 0.73 1.56 111 372
Bickfield Chillerie 26/44 3.50% 351 21 -0.08 -0.07   -4.4 0.1 -1.45 1 113
Tredinney Yogis Andante 23/169 3.10% 190 11.1 -0.06 -0.03 -6 -0.2 0.8 2.4 88 150
Marodore Aarons Levi 22/34 2.95% 470 32.6 0 -0.08 2 -5.9 0.96 1.55 97 304
Les Jaonnetts Conqueror 20/24 2.70% 782 40.4 -0.14 -0.27 -10 -6.9 -0.3 2.4 97 240
                         

The figures in column 2 are the 2012 dtrs compared with all daughters of the bull. 8/10 are A2xA2 the exceptions being Eric and Crunch.

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