Summary of DHI Participation
DHI Report K-1 for 2006

DHI Participation 2006  
Table 1. Dairy Cow Enrollment in DHI as of January 1, 2007
By Test Plan

Plan code Plan tag Herds Cows Percentage of DHI cows
00 DHI 1,442 575,003 13.6
01 DHI-AP-T 917 171,884 4.1
02 DHI-APCS 982 429,213 10.1
20 DHIR 924 138,642 3.3
21 DHIR-AP-T 569 77,986 1.8
22 DHIR-APCS 231 74,250 1.7
23 DHIR-AP 1,723 195,784 4.6
31 DHI-AP 10,730 1,903,643 44.9
33 DHI-MO 45 20,489 0.5
34 DHI-MO-AP 43 15,825 0.4
40 DHI-OS 1,226 95,126 2.2
41 DHI-OS-AP 3,687 263,173 6.2
42 DHI-OS-APCS 242 31,359 0.7
43 DHI-OS-MO 44 10,861 0.3
44 DHI-OS-MO-AP 33 8,368 0.2
45 DHI-OS-AC 5 308 0.0
46 DHI-OS-AP-AC 2 149 0.0
60 DHI-Comm 21 16,283 0.4
61 DHI-Comm-AP 77 47,724 1.1
62 DHI-Comm-APCS 1 805 0.0
63 DHI-Comm-MO 3 2,797 0.1
70 DHI-SS 26 12,325 0.3
71 DHI-SS-AP 484 100,823 2.4
72 DHI-SS-APCS 31 26,831 0.6
73 DHI-SS-MO 11 2,498 0.1
74 DHI-SS-MO-AP 47 16,337 0.4
80 DHI-BASIC 64 4,088 0.1
98 DHI-OTHER 1 631 0.0
  All Plans 23,611 4,243,205 100.0 

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DHI Participation 2006  
Table 2. Dairy Cow Enrollment in DHI Test Plans as of January 1, 2007
By Breed

  Ayrshire Brown Swiss Guernsey Holstein
Test plan Herds Cows Herds Cows Herds Cows Herds Cows
DHI 11 393 10 496 10 379 1,255 543,829
DHI-AP-T 3 126 5 209 4 235 822 155,223
DHI-APCS 0 0 4 204 2 103 890 404,753
DHIR 13 585 33 1,762 20 1,130 675 115,537
DHIR-AP-T 8 304 33 2,217 9 529 415 57,223
DHIR-APCS 1 356 3 322 2 84 169 59,811
DHIR-AP 34 1,760 81 4,732 29 1,679 1,199 149,524
DHI-AP 40 1,585 81 3,720 68 2,511 9,484 1,744,036
DHI-MO 0 0 1 204 0 0 42 19,938
DHI-MO-AP 0 0 0 0 0 0 43 15,825
Other plans 10 344 16 821 31 939 5,525 599,933
All Plans 120 5,453 267 14,687 175 7,589 20,519 3,865,632

 

 
  Jersey Milking Shorthorn Red and White Mixed
Test plan Herds Cows Herds Cows Herds Cows Herds Cows
DHI 85 21,195 0 0 0 0 71 8,711
DHI-AP-T 37 4,739 1 73 4 161 41 11,118
DHI-APCS 29 11,288 0 0 0 0 57 12,865
DHIR 142 15,503 8 473 0 0 34 3,652
DHIR-AP-T 71 14,004 6 458 1 111 26 3,140
DHIR-APCS 37 10,883 0 0 0 0 19 2,794
DHIR-AP 215 22,174 15 917 2 171 148 14,827
DHI-AP 388 77,993 9 169 16 796 644 72,833
DHI-MO 1 88 0 0 0 0 1 259
DHI-MO-AP 0 0 0 0 0 0 0 0
Other plans 136 8,269 4 387 2 83 281 29,710
All Plans 1,141 186,136 43 2,477 25 1,322 1,322 159,909 

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DHI Participation 2006  
Table 3. Participation of Dairy Cows in DHI Mastitis Screening
as of January 1, 2007 By State

State Herds Cows Percentage of DHI cows
Alabama 29 4,931 83
Arizona 33 69,278 93
Arkansas 38 5,640 99
California 912 929,395 95
Colorado 41 34,863 84
Connecticut 78 10,129 90
Delaware 26 3,550 95
Florida 16 16,829 33
Georgia 114 21,500 54
Idaho 180 177,900 97
Illinois 462 50,579 99
Indiana 386 49,172 98
Iowa 933 119,157 99
Kansas 210 24,619 71
Kentucky 198 21,395 96
Louisiana 57 7,933 79
Maine 111 11,041 86
Maryland 343 35,989 99
Massachusetts 79 7,951 92
Michigan 737 146,323 93
Minnesota 2,384 251,332 99
Mississippi 37 7,317 95
Missouri 363 35,909 98
Montana 40 6,277 81
Nebraska 158 30,029 99
Nevada 14 9,192 100
New Hampshire 82 9,007 98
New Jersey 57 4,993 100
New Mexico 27 61,313 94
New York 1,935 287,062 89
North Carolina 157 26,795 91
North Dakota 43 5,327 82
Ohio 829 111,877 97
Oklahoma 76 13,618 95
Oregon 231 53,881 99
Pennsylvania 4,245 321,444 94
Puerto Rico 114 27,067 86
Rhode Island 4 342 100
South Carolina 53 10,370 82
South Dakota 148 27,717 98
Tennessee 166 21,827 92
Texas 167 88,804 86
Utah 155 46,138 99
Vermont 354 47,493 88
Virginia 391 58,276 95
Washington 198 66,472 98
West Virginia 42 4,574 98
Wisconsin 5,448 585,860 98
Wyoming 5 893 100
United States 22,906 3,969,380 94 

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DHI Participation 2006  
Table 4. Dairy Cow Enrollment in DHI as of January 1, 2007
By State and Test Plan Category

  Official Management All Plans  
State Herds Cows Herds Cows Herds Cows Percentage of cow population in DHI
Alabama 29 5,379 5 591 34 5,970 43
Alaska
Arizona 33 63,764 6 11,063 39 74,827 45
Arkansas 37 5,421 2 291 39 5,712 29
California 885 923,540 61 56,377 946 979,917 55
Colorado 38 37,253 8 4,331 46 41,584 37
Connecticut 83 11,181 1 62 84 11,243 59
Delaware 21 3,376 6 356 27 3,732 53
Florida 28 25,989 37 25,603 65 51,592 40
Georgia 123 32,550 35 7,474 158 40,024 53
Hawaii
Idaho 166 164,799 17 18,626 183 183,425 37
Illinois 387 41,654 77 9,393 464 51,047 50
Indiana 306 43,132 85 6,793 391 49,925 30
Iowa 759 92,072 181 28,712 940 120,784 60
Kansas 182 30,687 33 4,156 215 34,843 31
Kentucky 147 17,224 62 5,133 209 22,357 23
Louisiana 66 9,067 4 931 70 9,998 32
Maine 116 11,425 5 1,481 121 12,906 40
Maryland 318 34,455 27 1,980 345 36,435 52
Massachusetts 80 8,347 4 278 84 8,625 56
Michigan 640 135,585 117 20,981 757 156,566 49
Minnesota 1,894 215,842 507 37,906 2,401 253,748 56
Mississippi 32 6,624 7 1,038 39 7,662 35
Missouri 252 26,202 113 10,345 365 36,547 32
Montana 37 5,952 5 1,832 42 7,784 43
Nebraska 134 26,670 26 3,606 160 30,276 50
Nevada 14 9,192 0 0 14 9,192 34
New Hampshire 80 9,003 4 234 84 9,237 62
New Jersey 56 4,927 1 66 57 4,993 45
New Mexico 28 63,093 1 1,868 29 64,961 18
New York 1,829 301,321 242 22,296 2,071 323,617 50
North Carolina 153 26,317 15 2,989 168 29,306 59
North Dakota 34 4,725 12 1,790 46 6,515 21
Ohio 676 96,046 178 19,158 854 115,204 42
Oklahoma 59 8,219 21 6,093 80 14,312 20
Oregon 225 53,030 7 1,343 232 54,373 45
Pennsylvania 2,761 257,187 1,534 83,522 4,295 340,709 61
Puerto Rico 134 31,330 1 230 135 31,560
Rhode Island 4 342 0 0 4 342 31
South Carolina 55 11,384 4 1,282 59 12,666 75
South Dakota 97 15,135 56 13,175 153 28,310 35
Tennessee 166 22,014 12 1,735 178 23,749 37
Texas 163 78,690 40 25,137 203 103,827 31
Utah 137 42,504 20 3,946 157 46,450 54
Vermont 317 44,754 71 9,514 388 54,268 38
Virginia 343 53,180 66 8,442 409 61,622 60
Washington 186 63,498 16 4,283 202 67,781 29
West Virginia 42 4,574 1 74 43 4,648 36
Wisconsin 3,250 423,322 2,271 173,819 5,521 597,141 48
Wyoming 4 742 1 151 5 893 13
United States 17,606 3,602,719 6,005 640,486 23,611 4,243,205 47 

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Table 4. Dairy Cow Enrollment in DHI as of January 1, 2007
By State and Test Plan Category

breed=Ayrshire

  Official Management All Plans
State Herds Cows Herds Cows Herds Cows
Connecticut 1 91 1 91
Illinois 2 65 2 65
Indiana 2 129 1 8 3 137
Iowa 9 612 1 15 10 627
Kansas 1 34 1 34
Maine 3 204 3 204
Maryland 6 242 6 242
Michigan 1 82 1 82
Minnesota 5 150 2 29 7 179
Missouri 1 36 1 36
Nebraska 1 121 1 121
New Hampshire 3 167 3 167
New Mexico 1 356 1 356
New York 21 930 1 41 22 971
Ohio 11 495 11 495
Oklahoma 1 75 1