Summary of DHI Participation
DHI Report K-1 for 2007

DHI Participation 2007  
Table 1. Dairy Cow Enrollment in DHI as of January 1, 2008
By Test Plan

Plan code Plan tag Herds Cows Percentage of DHI cows
00 DHI 1,285 549,450 12.4
01 DHI-AP-T 797 160,562 3.6
02 DHI-APCS 968 505,388 11.4
20 DHIR 851 143,377 3.2
21 DHIR-AP-T 532 77,811 1.8
22 DHIR-APCS 228 77,710 1.8
23 DHIR-AP 1,754 198,917 4.5
31 DHI-AP 10,671 1,996,505 45.2
33 DHI-MO 38 20,615 0.5
34 DHI-MO-AP 50 18,922 0.4
40 DHI-OS 1,128 89,624 2.0
41 DHI-OS-AP 3,630 278,043 6.3
42 DHI-OS-APCS 256 35,925 0.8
43 DHI-OS-MO 45 10,375 0.2
44 DHI-OS-MO-AP 29 8,505 0.2
45 DHI-OS-AC 4 2,648 0.1
46 DHI-OS-AP-AC 3 454 0.0
60 DHI-Comm 19 21,424 0.5
61 DHI-Comm-AP 63 44,375 1.0
62 DHI-Comm-APCS 1 4,815 0.1
63 DHI-Comm-MO 3 3,374 0.1
70 DHI-SS 24 14,577 0.3
71 DHI-SS-AP 475 109,436 2.5
72 DHI-SS-APCS 29 19,984 0.5
73 DHI-SS-MO 17 4,207 0.1
74 DHI-SS-MO-AP 43 14,109 0.3
80 DHI-BASIC 61 3,678 0.1
98 DHI-OTHER 1 11 0.0
  All Plans 23,005 4,414,821 100.0 

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DHI Participation 2007  
Table 2. Dairy Cow Enrollment in DHI Test Plans as of January 1, 2008
By Breed

  Ayrshire Brown Swiss Guernsey Holstein
Test plan Herds Cows Herds Cows Herds Cows Herds Cows
DHI 8 257 8 372 9 349 1,117 508,080
DHI-AP-T 2 118 3 119 3 182 711 142,595
DHI-APCS 0 0 2 144 1 17 879 472,080
DHIR 10 438 33 1,664 17 969 631 121,686
DHIR-AP-T 8 304 29 1,877 6 380 389 57,379
DHIR-APCS 2 549 4 337 3 165 167 64,037
DHIR-AP 32 1,633 87 5,078 32 1,978 1,235 152,396
DHI-AP 47 1,955 79 4,117 63 2,420 9,324 1,818,241
DHI-MO 0 0 1 171 0 0 35 19,428
DHI-MO-AP 0 0 0 0 0 0 45 18,074
Other plans 7 305 18 762 27 981 5,344 621,000
All Plans 116 5,559 264 14,641 161 7,441 19,877 3,994,996

 

 
  Jersey Milking Shorthorn Red and White Mixed
Test plan Herds Cows Herds Cows Herds Cows Herds Cows
DHI 75 17,031 0 0 0 0 68 23,361
DHI-AP-T 33 4,360 1 90 2 88 42 13,010
DHI-APCS 26 18,748 0 0 0 0 61 14,399
DHIR 122 14,601 7 441 0 0 32 3,578
DHIR-AP-T 69 14,324 3 164 1 103 27 3,280
DHIR-APCS 35 9,936 0 0 0 0 17 2,686
DHIR-AP 214 22,307 16 952 2 189 136 14,384
DHI-AP 398 78,125 8 198 16 639 736 90,810
DHI-MO 1 69 0 0 0 0 1 947
DHI-MO-AP 0 0 0 0 0 0 5 848
Other plans 137 9,775 4 431 3 137 291 32,173
All Plans 1,110 189,276 39 2,276 24 1,156 1,416 199,476 

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DHI Participation 2007  
Table 3. Participation of Dairy Cows in DHI Mastitis Screening
as of January 1, 2008 By State

State Herds Cows Percentage of DHI cows
Alabama 26 4,917 89
Arizona 33 70,975 90
Arkansas 32 5,041 100
California 893 970,255 96
Colorado 42 43,674 87
Connecticut 79 10,994 93
Delaware 30 3,856 100
Florida 17 22,684 42
Georgia 114 24,184 61
Idaho 174 210,195 99
Illinois 444 50,260 100
Indiana 367 50,847 97
Iowa 881 122,750 98
Kansas 197 30,778 95
Kentucky 201 22,668 91
Louisiana 49 7,436 78
Maine 116 11,487 86
Maryland 321 35,168 99
Massachusetts 82 7,935 92
Michigan 715 159,832 93
Minnesota 2,297 256,111 99
Mississippi 36 7,785 99
Missouri 339 36,210 98
Montana 34 6,300 94
Nebraska 146 28,611 99
Nevada 15 11,392 100
New Hampshire 85 9,763 99
New Jersey 55 4,898 95
New Mexico 25 62,826 91
New York 1,928 304,527 92
North Carolina 147 27,093 91
North Dakota 42 6,000 81
Ohio 810 114,975 97
Oklahoma 67 10,556 91
Oregon 214 50,337 97
Pennsylvania 4,207 331,810 95
Puerto Rico 44 11,066 40
Rhode Island 4 392 100
South Carolina 54 11,667 90
South Dakota 140 33,126 99
Tennessee 165 20,896 94
Texas 161 103,045 90
Utah 143 44,837 92
Vermont 356 48,853 92
Virginia 375 56,191 92
Washington 201 73,268 98
West Virginia 39 4,437 97
Wisconsin 5,374 618,328 98
Wyoming 2 637 100
United States 22,318 4,161,873 94 

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DHI Participation 2007  
Table 4. Dairy Cow Enrollment in DHI as of January 1, 2008
By State and Test Plan Category

  Official Management All Plans  
State Herds Cows Herds Cows Herds Cows Percentage of cow population in DHI
Alabama 28 5,248 2 284 30 5,532 43
Alaska 0 0 1 89 1 89 15
Arizona 35 66,293 4 12,229 39 78,522 42
Arkansas 29 4,684 3 357 32 5,041 30
California 865 951,207 56 61,876 921 1,013,083 55
Colorado 42 45,878 7 4,046 49 49,924 42
Connecticut 85 11,714 2 97 87 11,811 62
Delaware 21 3,545 9 311 30 3,856 59
Florida 26 29,339 37 24,129 63 53,468 43
Georgia 121 32,356 34 7,555 155 39,911 52
Hawaii
Idaho 160 192,895 16 18,389 176 211,284 40
Illinois 374 45,276 71 5,052 445 50,328 49
Indiana 293 42,497 85 10,049 378 52,546 32
Iowa 723 103,279 164 21,531 887 124,810 58
Kansas 163 20,891 37 11,494 200 32,385 30
Kentucky 134 15,582 81 9,453 215 25,035 28
Louisiana 58 8,627 4 942 62 9,569 35
Maine 120 11,931 5 1,462 125 13,393 41
Maryland 303 33,900 20 1,558 323 35,458 62
Massachusetts 80 8,136 7 495 87 8,631 60
Michigan 632 146,344 110 25,177 742 171,521 50
Minnesota 1,844 221,445 463 36,486 2,307 257,931 56
Mississippi 32 7,009 5 886 37 7,895 38
Missouri 234 24,286 108 12,710 342 36,996 34
Montana 31 5,950 4 740 35 6,690 39
Nebraska 121 24,768 27 4,100 148 28,868 51
Nevada 15 11,392 0 0 15 11,392 42
New Hampshire 83 9,687 3 132 86 9,819 70
New Jersey 55 5,081 1 70 56 5,151 52
New Mexico 27 67,662 1 1,611 28 69,273 20
New York 1,787 311,268 251 20,956 2,038 332,224 53
North Carolina 141 25,610 17 4,100 158 29,710 62
North Dakota 33 4,918 12 2,451 45 7,369 26
Ohio 664 96,733 164 21,313 828 118,046 43
Oklahoma 52 6,901 19 4,636 71 11,537 17
Oregon 210 51,124 5 638 215 51,762 45
Pennsylvania 2,710 259,964 1,544 88,686 4,254 348,650 63
Puerto Rico 114 27,476 1 249 115 27,725
Rhode Island 5 393 0 0 5 393 36
South Carolina 55 11,781 4 1,200 59 12,981 72
South Dakota 92 19,189 51 14,291 143 33,480 39
Tennessee 159 20,387 13 1,864 172 22,251 36
Texas 158 79,730 39 34,520 197 114,250 33
Utah 130 45,346 15 3,156 145 48,502 57
Vermont 310 44,789 71 8,453 381 53,242 38
Virginia 329 52,753 64 8,472 393 61,225 61
Washington 189 69,912 17 4,863 206 74,775 31
West Virginia 39 4,512 1 83 40 4,595 35
Wisconsin 3,261 458,932 2,176 172,323 5,437 631,255 51
Wyoming 2 637 0 0 2 637 9
United States 17,174 3,749,257 5,831 665,564 23,005 4,414,821 48 

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Table 4. Dairy Cow Enrollment in DHI as of January 1, 2008
By State and Test Plan Category

breed=Ayrshire

  Official Management All Plans
State Herds Cows Herds Cows Herds Cows
Connecticut 1 93 1 93
Illinois 2 73 2 73
Indiana 2 129 2 129
Iowa 11 790 11 790
Kansas 1 39 1 39
Kentucky 1 41 1 41
Maine 3 208 3 208
Maryland 7 411 7 411
Michigan 1 17 1 79 2 96
Minnesota 5 166 1 17 6 183
Missouri 1 40 1 40
Nebraska 1 117 1 117
New Hampshire 2 148 2 148
New Mexico 1 393 1 393
New York 20 843 1 38 21 881
Ohio 11 395 11