Table 2. 2006 Averages of DHI Cow Herds
by Breed and Category of Testing Plan

  Records Milk Fat Protein
Breed Test Plan Category Herds Cow-years Cow-years per herd (lb) (%) (lb) % Reporting (%) (lb) % Reporting
Ayrshire Official 106 5,442 51 15,562 3.88 604 100 3.16 493 100
  Management 9 354 39 14,786 4.31 637 100 3.09 457 100
  All plans 115 5,796 50 15,515 3.91 606 100 3.16 490 100
Brown Swiss Official 258 14,177 55 18,218 4.06 746 99 3.37 619 99
  Management 17 830 49 17,034 4.02 685 100 3.34 569 100
  All plans 275 15,007 55 18,152 4.06 742 99 3.37 617 99
Guernsey Official 139 6,783 49 15,586 4.54 707 100 3.36 524 99
  Management 31 1,079 35 14,247 4.43 631 100 3.31 471 100
  All plans 170 7,862 46 15,402 4.52 697 100 3.35 517 99
Holstein Official 15,600 3,276,026 210 22,833 3.64 835 98 3.06 700 95
  Management 5,776 630,233 109 21,202 3.75 801 93 3.05 654 91
  All plans 21,376 3,906,258 183 22,569 3.66 829 97 3.06 693 94
Jersey Official 1,015 176,260 174 16,250 4.61 750 100 3.59 583 99
  Management 139 10,321 74 14,020 4.55 639 97 3.53 497 93
  All plans 1,154 186,581 162 16,127 4.61 744 100 3.59 579 99
Milking Shorthorn Official 37 2,260 61 14,090 3.56 502 100 3.10 437 100
  Management 4 382 95 18,146 4.49 815 100 3.07 557 100
  All plans 41 2,641 64 14,676 3.73 547 100 3.10 454 100
Red and White Official 26 1,390 53 20,450 3.69 754 100 3.04 622 100
  Management 3 100 33 19,638 3.68 723 100 2.98 585 100
  All plans 29 1,490 51 20,395 3.69 752 100 3.04 620 100
Mixed Official 1,099 135,890 124 18,017 3.94 714 98 3.23 583 98
  Management 277 31,040 112 17,004 4.08 702 83 3.19 562 80
  All plans 1,376 166,930 121 17,829 3.96 712 96 3.22 580 95
All breeds Official 18,280 3,618,227 198 22,282 3.69 825 98 3.09 688 95
  Management 6,256 674,338 108 20,877 3.77 794 93 3.06 647 90
  All plans 24,536 4,292,565 175 22,061 3.70 820 97 3.08 682 94 

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