DHI Participation as of January 1, 2019
DHI Report K-1

DHI Participation 2018  
Table 1. Dairy cow enrollment in DHI as of January 1, 2019, by test plan

Plan code Plan tag Herds Cows Percentage of DHI cows
00 DHI 318 122,893 2.9
02 DHI-APCS 803 1,028,578 24.3
20 DHIR 253 52,304 1.2
22 DHIR-APCS 212 137,034 3.2
23 DHIR-AP 1,749 331,110 7.8
31 DHI-AP 6,438 2,037,276 48.1
33 DHI-MO 4 2,798 0.1
34 DHI-MO-AP 10 3,879 0.1
40 DHI-OS 450 37,621 0.9
41 DHI-OS-AP 2,744 224,662 5.3
42 DHI-OS-APCS 226 40,924 1.0
43 DHI-OS-MO 19 9,577 0.2
44 DHI-OS-MO-AP 10 3,272 0.1
45 DHI-OS-AC 2 3,034 0.1
70 DHI-SS 22 9,368 0.2
71 DHI-SS-AP 504 151,374 3.6
72 DHI-SS-APCS 45 33,560 0.8
73 DHI-SS-MO 4 1,416 0.0
74 DHI-SS-MO-AP 6 3,612 0.1
  All Plans 13,819 4,234,292 100.0 

 Return to the CDCB Home page
DHI Participation 2018  
Table 3. Participation of dairy cows in DHI mastitis screening as of January 1, 2019, by State

State Herds Cows Percentage of DHI cows
Alabama 9 1,368 87
Arizona 11 28,779 76
Arkansas 13 2,281 95
California 593 882,009 100
Colorado 36 71,404 99
Connecticut 53 12,360 100
Delaware 19 3,120 100
Florida 17 22,686 74
Georgia 51 17,810 86
Idaho 111 221,810 97
Illinois 255 44,518 98
Indiana 233 47,027 88
Iowa 470 115,035 99
Kansas 111 25,730 81
Kentucky 218 27,231 100
Louisiana 27 3,864 96
Maine 90 15,423 100
Maryland 197 28,820 100
Massachusetts 55 4,519 96
Michigan 433 192,849 97
Minnesota 1,218 226,197 100
Mississippi 25 4,624 100
Missouri 204 24,704 87
Montana 14 2,461 100
Nebraska 63 29,907 100
Nevada 7 9,027 92
New Hampshire 58 7,456 100
New Jersey 32 3,157 100
New Mexico 16 67,588 100
New York 1,215 333,131 95
North Carolina 94 23,659 99
North Dakota 17 8,255 100
Ohio 570 98,660 94
Oklahoma 43 6,358 100
Oregon 99 39,968 99
Pennsylvania 2,976 301,290 96
Rhode Island 3 214 100
South Carolina 25 6,424 100
South Dakota 61 40,211 98
Tennessee 61 8,984 93
Texas 79 185,354 94
Utah 81 28,148 100
Vermont 249 49,315 97
Virginia 219 44,509 92
Washington 102 62,336 91
West Virginia 18 1,996 100
Wisconsin 3,082 726,050 99
United States 13,633 4,108,626 97 

 Return to the CDCB Home page
DHI Participation 2018  
Table 4. Dairy cow enrollment in DHI as of January 1, 2019, by State and test-plan category

breed=ALL

  Official Management All Plans  
State Herds Cows Herds Cows Herds Cows Percentage of cow population in DHI
Alabama 6 910 4 660 10 1,570 31
Arizona 12 29,891 1 7,862 13 37,753 19
Arkansas 10 1,762 4 639 14 2,401 48
California 575 861,593 19 21,260 594 882,853 51
Colorado 36 71,404 1 705 37 72,109 41
Connecticut 51 12,305 2 55 53 12,360 63
Delaware 16 3,030 3 90 19 3,120 69
Florida 15 21,844 11 8,949 26 30,793 26
Georgia 43 12,300 15 8,293 58 20,593 25
Idaho 109 224,914 5 4,712 114 229,626 38
Illinois 222 41,938 36 3,536 258 45,474 52
Indiana 156 41,982 81 11,197 237 53,179 29
Iowa 391 100,690 83 15,815 474 116,505 53
Kansas 90 28,820 26 3,078 116 31,898 20
Kentucky 45 10,434 174 16,849 219 27,283 51
Louisiana 10 1,562 18 2,451 28 4,013 36
Maine 88 14,978 3 471 91 15,449 53
Maryland 166 25,465 32 3,440 198 28,905 66
Massachusetts 49 4,284 7 399 56 4,683 45
Michigan 391 183,613 49 14,347 440 197,960 47
Minnesota 1,025 203,461 195 23,436 1,220 226,897 50
Mississippi 17 3,102 8 1,522 25 4,624 58
Missouri 118 13,968 90 14,380 208 28,348 35
Montana 12 2,306 2 155 14 2,461 21
Nebraska 47 26,733 17 3,277 64 30,010 51
Nevada 8 9,762 0 0 8 9,762 30
New Hampshire 53 7,097 6 375 59 7,472 62
New Jersey 32 3,157 0 0 32 3,157 57
New Mexico 16 67,588 0 0 16 67,588 21
New York 1,019 328,489 219 21,548 1,238 350,037 56
North Carolina 72 18,807 24 5,081 96 23,888 56
North Dakota 11 4,296 6 3,959 17 8,255 55
Ohio 407 73,134 182 32,337 589 105,471 42
Oklahoma 23 3,094 20 3,264 43 6,358 16
Oregon 96 39,373 4 853 100 40,226 32
Pennsylvania 1,614 218,238 1,381 94,876 2,995 313,114 61
Rhode Island 3 214 0 0 3 214 31
South Carolina 24 5,326 1 1,098 25 6,424 46
South Dakota 46 24,930 18 16,039 64 40,969 34
Tennessee 61 9,348 3 321 64 9,669 27
Texas 75 170,608 20 27,144 95 197,752 37
Utah 72 26,723 10 1,548 82 28,271 28
Vermont 193 43,569 61 7,495 254 51,064 41
Virginia 167 40,276 58 8,156 225 48,432 61
Washington 101 64,837 6 3,402 107 68,239 24
West Virginia 17 1,859 1 137 18 1,996 29
Wisconsin 1,977 611,858 1,126 123,209 3,103 735,067 58
United States 9,787 3,715,872 4,032 518,420 13,819 4,234,292 45 

Return to Top  Return to the CDCB Home Page
DHI Participation 2018  
Table 5. Testing characteristics for cow herds tested between October and December 2018 by State

  Cow Test Days
State Herds Cows Test days/
herd-year		 Supervised
(%)		 Sampled
(%)		 All milkings weighed
(%)		 All milkings sampled
(%)		 >1 Day recorded
(%)		 3X Milking
(%)
Alabama 11 1,727 10.4 79.7 98.6 3.7 0.0 2.6 0.0
Arizona 14 37,583 12.3 100.0 100.0 49.0 6.4 0.0 76.8
Arkansas 15 2,652 10.1 98.2 98.7 0.0 0.0 0.0 0.4
California 597 853,302 11.8 99.9 99.7 29.3 3.9 6.3 23.3
Colorado 39 59,907 11.2 99.3 100.0 48.9 7.6 26.4 90.4
Connecticut 56 12,151 10.6 99.7 74.7 45.5 1.2 40.7 56.1
Delaware 20 3,575 10.8 97.4 83.4 13.9 0.0 51.1 16.4
Florida 28 30,237 11.7 89.1 73.0 51.1 0.0 37.3 50.4
Georgia 65 22,787 10.0 98.3 84.2 39.5 0.0 22.2 44.1
Idaho 110 177,507 11.6 97.5 97.8 79.4 12.8 11.7 67.9
Illinois 273 47,767 9.8 94.7 98.2 23.0 3.3 13.7 39.1
Indiana 243 50,412 9.9 91.4 89.9 40.6 5.0 32.5 59.8
Iowa 501 121,649 10.0 93.1 97.2 26.6 0.6 17.7 55.2
Kansas 119 32,232 10.5 87.7 91.5 11.9 1.4 10.2 62.8
Kentucky 219 28,730 9.1 79.6 97.8 42.2 5.1 36.0 42.3
Louisiana 33 4,732 8.9 100.0 90.4 14.2 0.0 18.6 0.0
Maine 96 15,641 11.7 94.4 96.8 42.8 3.8 13.0 36.4
Maryland 213 30,363 10.9 93.8 95.9 33.7 7.1 26.4 20.3
Massachusetts 56 4,932 10.1 97.6 98.4 8.1 7.1 2.2 7.5
Michigan 465 186,805 10.4 97.7 88.9 23.1 1.1 23.7 60.1
Minnesota 1,283 230,413 11.0 90.2 98.5 20.9 2.1 15.0 43.8
Mississippi 26 4,151 10.0 97.7 100.0 5.6 0.0 4.3 13.7
Missouri 212 31,251 9.2 88.4 99.3 22.2 1.2 19.2 18.3
Montana 19 3,915 8.6 91.4 98.4 69.8 36.0 48.4 42.3
Nebraska 70 32,536 10.4 90.4 93.4 15.4 0.0 17.3 68.9
Nevada 8 6,674 9.2 100.0 100.0 24.6 6.2 12.2 52.4
New Hampshire 58 7,665 10.3 99.4 100.0 15.8 2.0 12.0 16.1
New Jersey 32 3,195 10.3 88.8 88.8 29.1 4.4 24.7 15.0
New Mexico 16 53,573 11.5 100.0 98.5 27.7 10.1 0.0 57.4
New York 1,338 355,121 11.0 94.2 97.5 28.7 1.6 18.9 69.3
North Carolina 93 23,856 11.3 87.1 99.1 40.5 0.0 21.8 54.1
North Dakota 19 6,642 10.2 52.8 100.0 33.3 0.0 32.8 59.0
Ohio 616 108,138 9.8 83.6 95.2 27.3 10.1 13.5 46.4
Oklahoma 44 6,359 8.3 95.0 100.0 8.7 2.6 1.2 4.7
Oregon 103 40,734 10.4 99.7 99.7 31.5 19.1 6.2 15.4
Pennsylvania 3,310 333,267 11.2 69.2 96.4 22.0 1.8 18.3 26.0
Rhode Island 3 226 7.0 100.0 100.0 48.6 0.0 56.8 0.0
South Carolina 28 6,928 10.5 100.0 95.5 29.4 0.0 21.4 3.9
South Dakota 69 36,787 11.1 91.4 99.0 31.3 2.5 19.5 76.8
Tennessee 71 12,740 8.6 94.9 97.2 28.7 0.1 21.9 25.0
Texas 107 114,835 10.6 98.1 84.7 56.5 0.0 6.5 26.4
Utah 90 34,551 9.6 94.6 100.0 78.2 64.7 32.8 56.4
Vermont 261 51,798 10.5 94.4 94.0 22.9 6.3 10.2 51.6
Virginia 250 53,310 9.5 92.6 92.5 32.4 1.1 27.4 36.2
Washington 111 73,184 10.6 91.7 100.0 66.4 17.0 19.5 48.1
West Virginia 20 2,222 10.4 90.4 96.3 45.2 9.9 25.2 14.6
Wisconsin 3,126 737,029 11.3 85.5 97.8 29.0 2.9 17.4 62.9
United States 14,556 4,095,790 11.0 91.6 96.8 32.4 4.3 15.0 46.6 

 Return to the CDCB Home page
DHI Participation 2018  
Table 6. Dairy goat enrollment in DHI as of January 1, 2019, by State and test-plan category

  Official Management All Plans
State Herds Does Herds Does Herds Does
Alabama 3 40 2 18 5 58
Arizona 6 68 5 72 11 140
Arkansas 4 46 2 12 6 58
California 57 4,074 18 3,635 75 7,709
Colorado 7 59 3 72 10 131
Connecticut 4 33 1 2 5 35
Delaware 0 0 4 14 4 14
Florida 13 105 9 95 22 200
Georgia 9 75 9 114 18 189
Idaho 14 174 7 128 21 302
Illinois 5 69 8 577 13 646
Indiana 7 148 8 76 15 224
Iowa 9 487 5 734 14 1,221
Kansas 9 100 2 20 11 120
Kentucky 6 105 2 14 8 119
Louisiana 3 23 1 13 4 36
Maine 10 131 0 0 10 131
Maryland 7 421 6 58 13 479
Massachusetts 3 48 4 106 7 154
Michigan 7 42 14 76 21 118
Minnesota 18 1,323 4 36 22 1,359
Mississippi 3 25 6 19 9 44
Missouri 11 164 3 34 14 198
Montana 4 28 3 19 7 47
Nebraska 0 0 1 27 1 27
New Hampshire 3 31 1 4 4 35
New Jersey 1 4 0 0 1 4
New Mexico 3 13 3 29 6 42
New York 9 224 5 75 14 299
North Carolina 12 163 8 96 20 259
Ohio 12 130 6 58 18 188
Oklahoma 8 79 7 65 15 144
Oregon 31 597 26 835 57 1,432
Pennsylvania 10 447 14 469 24 916
Tennessee 8 140 5 33 13 173
Texas 13 218 20 271 33 489
Utah 12 265 1 8 13 273
Vermont 6 611 6 612 12 1,223
Virginia 9 128 12 80 21 208
Washington 30 332 32 245 62 577
West Virginia 0 0 2 14 2 14
Wisconsin 27 1,989 15 1,064 42 3,053
Wyoming 9 95 10 62 19 157
United States 422 13,254 300 9,991 722 23,245 

 Return to the CDCB Home page

We wish to acknowledge the contribution of the dairy producers who supplied data for this report through their participation in the DHI program and the Dairy Records Processing Centers that processed and relayed the information on to the Council on Dairy Cattle Breeding (CDCB).