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Reproductive status of cows in Dairy Herd Improvement programs and bred using artificial insemination (2012)

TABLE 1. 2012 REPRODUCTIVE TRAIT AVERAGES and standard errors.
 
TABLE 2. Average numbers of BREEDINGS PER CONCEPTION (2003–12).
 
TABLE 3. Average DAYS FROM CALVING TO FIRST BREEDING (2003–12).
 
TABLE 4. Average DAYS FROM CALVING TO LAST BREEDING (2003–12).
 
TABLE 5. Average DAYS FROM FIRST TO LAST BREEDING (2003–12).
 
TABLE 6. Average CONCEPTION RATES FOR FIRST BREEDINGS (2003–12).
 
TABLE 7. Average CONCEPTION RATES FOR ALL BREEDINGS (2003–12).
 
TABLE 8. Average CALVING INTERVALS (2003–11).
 
TABLE 9. Numbers of RECORDS (2003–12): A) AYRSHIRE, B) BROWN SWISS, C) GUERNSEY, D) HOLSTEIN, E) JERSEY), F) MILKING SHORTHORN, and G) RED & WHITE.
 
BACKGROUND
 

TABLE 1. 20121 REPRODUCTIVE TRAIT AVERAGES and standard errors by breed.
 
SAS Output
Trait Ayrshire Brown Swiss Guernsey Holstein Jersey Milking Shorthorn Red & White
Breedings per conception 2.0+/- 0.02 2.4+/- 0.02 2.4+/- 0.03 2.5+/- 0.00 2.1+/- 0.00 1.6+/- 0.03 2.1+/- 0.04
Days from calving to first breeding 95+/- 0.7 87+/- 0.4 93+/- 0.8 79+/- 0.0 75+/- 0.1 95+/- 1.4 86+/- 1.0
Days from calving to last breeding 133+/- 1.4 140+/- 1.0 143+/- 1.9 126+/- 0.1 110+/- 0.2 120+/- 2.2 127+/- 2.4
Days from first to last breeding 47+/- 1.1 65+/- 0.9 62+/- 1.5 58+/- 0.1 43+/- 0.2 28+/- 1.4 48+/- 2.0
Conception rate for first breedings 0.37+/- .008 0.29+/- .005 0.29+/- .008 0.33+/- .000 0.43+/- .001 0.43+/- .015 0.37+/- .015
Conception rate for all breedings 0.36+/- .005 0.27+/- .003 0.27+/- .005 0.31+/- .000 0.38+/- .001 0.42+/- .011 0.34+/- .010
Calving interval 421+/- 1.8 433+/- 1.3 435+/- 2.3 408+/- 0.1 392+/- 0.2 420+/- 4.0 415+/- 3.1

1Cows first bred in 2012 for all traits except calving interval; for calving interval, cows with first calving for the interval in 2009.


TABLE 2. Average numbers of BREEDINGS PER CONCEPTION by breed and year of first breeding.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Ayrshire 2.1 2.0 2.1 2.1 2.0 1.9 2.0 2.0 2.0 2.0
Brown Swiss 2.5 2.4 2.5 2.6 2.6 2.5 2.4 2.5 2.4 2.4
Guernsey 2.6 2.6 2.6 2.6 2.7 2.6 2.6 2.6 2.4 2.4
Holstein 2.4 2.5 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5
Jersey 2.2 2.2 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.1
Milking Shorthorn 1.6 1.6 1.5 1.8 1.7 1.8 1.9 1.7 1.8 1.6
Red & White 2.4 2.2 2.2 2.3 2.4 2.2 2.2 2.2 2.1 2.1




TABLE 3. Average DAYS FROM CALVING TO FIRST BREEDING by breed and breeding year.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Ayrshire 98 96 94 94 94 93 92 94 95 95
Brown Swiss 98 93 93 92 92 92 90 89 89 87
Guernsey 99 94 91 89 94 95 89 90 92 93
Holstein 90 88 87 86 85 83 81 81 79 79
Jersey 87 86 86 84 83 78 76 77 76 75
Milking Shorthorn 100 92 98 91 96 93 88 94 102 95
Red & White 96 96 98 94 87 86 86 84 85 86




TABLE 4. Average DAYS FROM CALVING TO LAST BREEDING by breed and year of first breeding.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Ayrshire 143 134 134 132 134 131 132 133 135 133
Brown Swiss 161 150 157 161 155 152 146 147 145 140
Guernsey 157 148 153 150 152 149 148 145 144 143
Holstein 147 143 146 145 141 136 133 132 130 126
Jersey 130 129 132 130 126 121 116 115 113 110
Milking Shorthorn 130 122 117 118 123 122 121 124 134 120
Red & White 157 143 148 146 143 132 136 130 127 127




TABLE 5. Average DAYS FROM FIRST TO LAST BREEDING by breed and year of first breeding.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Ayrshire 54 47 50 49 48 42 48 50 48 47
Brown Swiss 78 72 79 81 78 73 69 73 69 65
Guernsey 77 72 76 75 76 71 73 71 65 62
Holstein 67 67 71 70 67 63 62 62 61 58
Jersey 53 53 57 57 54 52 48 47 46 43
Milking Shorthorn 30 34 24 35 35 37 42 35 37 28
Red & White 71 58 59 62 64 56 57 53 48 48




TABLE 6. Average CONCEPTION RATES FOR FIRST BREEDINGS by breed and breeding year.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Ayrshire 0.35 0.38 0.37 0.36 0.37 0.39 0.37 0.36 0.37 0.37
Brown Swiss 0.29 0.28 0.27 0.27 0.28 0.27 0.29 0.29 0.29 0.29
Guernsey 0.28 0.28 0.27 0.26 0.27 0.26 0.25 0.27 0.28 0.29
Holstein 0.32 0.33 0.31 0.31 0.32 0.32 0.32 0.32 0.32 0.33
Jersey 0.40 0.41 0.40 0.39 0.39 0.39 0.40 0.41 0.41 0.43
Milking Shorthorn 0.32 0.43 0.45 0.41 0.40 0.41 0.38 0.43 0.40 0.43
Red & White 0.30 0.33 0.33 0.30 0.28 0.33 0.35 0.33 0.35 0.37




TABLE 7. Average CONCEPTION RATES FOR ALL BREEDINGS by breed and year of first breeding.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Ayrshire 0.34 0.36 0.35 0.35 0.36 0.39 0.37 0.36 0.36 0.36
Brown Swiss 0.26 0.26 0.25 0.24 0.25 0.26 0.27 0.27 0.27 0.27
Guernsey 0.26 0.26 0.25 0.25 0.26 0.25 0.24 0.25 0.26 0.27
Holstein 0.30 0.31 0.29 0.29 0.30 0.30 0.31 0.30 0.30 0.31
Jersey 0.37 0.37 0.35 0.35 0.35 0.35 0.36 0.37 0.37 0.38
Milking Shorthorn 0.34 0.41 0.44 0.37 0.38 0.40 0.35 0.40 0.40 0.42
Red & White 0.29 0.30 0.32 0.31 0.29 0.31 0.34 0.34 0.33 0.34




TABLE 8. Average CALVING INTERVALS (days) by breed and year of first calving for the interval.
 
SAS Output
Breed 2003 2004 2005 2006 2007 2008 2009 2010 2011
Ayrshire 420 421 420 421 416 418 413 418 421
Brown Swiss 436 443 444 451 448 448 440 432 433
Guernsey 434 437 440 438 440 441 435 432 435
Holstein 425 422 423 423 418 417 412 409 408
Jersey 411 412 411 411 402 400 396 393 392
Milking Shorthorn 404 407 410 403 418 411 408 403 420
Red & White 430 431 434 436 422 417 412 416 415




TABLE 9. Numbers of RECORDS used to calculate reproductive statistics by breed, trait, and year.


A) AYRSHIRE
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 2,903 3,603 3,631 3,734 3,637 3,554 3,200 3,745 3,755 3,934
Days from calving to first breeding 2,998 3,742 3,749 3,856 3,751 3,714 3,313 3,890 3,918 4,081
Days from calving to last breeding 2,121 2,601 2,645 2,653 2,698 2,613 2,368 2,688 2,761 2,851
Days from first to last breeding 2,903 3,603 3,631 3,734 3,637 3,554 3,200 3,745 3,755 3,934
Conception rate for first breedings 2,560 3,340 3,357 3,460 3,357 3,197 2,921 3,415 3,475 3,612
Conception rate for all breedings 5,262 7,240 7,556 7,847 7,290 7,016 6,120 7,630 7,632 7,981
Calving interval 1,343 1,906 1,913 1,906 1,750 1,687 1,563 1,937 2,010 1,607




B) BROWN SWISS
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 7,751 8,850 9,596 9,364 9,743 9,995 9,647 10,253 10,468 10,243
Days from calving to first breeding 7,979 9,263 9,961 9,707 10,109 10,363 10,050 10,606 10,866 10,644
Days from calving to last breeding 5,045 5,582 5,955 5,872 6,276 6,431 6,296 6,829 6,883 6,708
Days from first to last breeding 7,751 8,850 9,596 9,364 9,743 9,995 9,647 10,253 10,468 10,243
Conception rate for first breedings 6,915 8,291 8,941 8,790 9,187 9,199 9,010 9,564 9,827 9,597
Conception rate for all breedings 16,556 21,103 23,484 23,992 25,300 25,423 24,021 24,949 25,667 25,068
Calving interval 3,532 4,703 4,723 4,687 5,061 4,915 5,082 5,445 5,222 4,427




C) GUERNSEY
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 3,877 4,048 3,876 3,533 3,485 3,492 3,240 3,623 3,425 3,253
Days from calving to first breeding 3,993 4,239 4,059 3,670 3,635 3,634 3,370 3,779 3,567 3,378
Days from calving to last breeding 2,575 2,734 2,561 2,333 2,325 2,213 2,077 2,376 2,214 2,104
Days from first to last breeding 3,877 4,048 3,876 3,533 3,485 3,492 3,240 3,623 3,425 3,253
Conception rate for first breedings 3,450 3,816 3,648 3,328 3,166 3,073 2,974 3,287 3,095 2,933
Conception rate for all breedings 8,808 10,456 10,156 9,542 9,305 9,114 8,892 9,253 8,613 7,947
Calving interval 1,628 2,056 1,906 1,700 1,669 1,531 1,629 1,637 1,521 1,080




D) HOLSTEIN
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 907,911 984,904 1,031,194 1,085,642 1,359,454 1,405,617 1,443,449 1,678,153 1,743,040 1,823,361
Days from calving to first breeding 945,698 1,019,858 1,066,431 1,120,999 1,400,669 1,450,290 1,488,049 1,728,681 1,794,260 1,879,894
Days from calving to last breeding 670,960 747,794 767,583 808,890 1,028,076 1,068,296 1,100,895 1,283,026 1,328,391 1,394,609
Days from first to last breeding 907,911 984,904 1,031,194 1,085,642 1,359,454 1,405,617 1,443,449 1,678,153 1,743,040 1,823,361
Conception rate for first breedings 867,708 957,197 1,005,646 1,039,172 1,275,822 1,342,072 1,392,906 1,620,120 1,696,457 1,773,655
Conception rate for all breedings 2,136,283 2,391,164 2,602,505 2,751,015 3,367,494 3,559,044 3,578,787 4,164,122 4,381,819 4,521,797
Calving interval 478,633 534,166 537,470 590,553 729,039 747,831 795,438 896,414 932,429 928,121




E) JERSEY
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 47,957 48,459 51,401 53,777 88,799 95,153 104,269 128,601 147,635 156,662
Days from calving to first breeding 50,247 50,567 53,468 55,802 91,977 98,413 107,320 132,583 152,325 162,610
Days from calving to last breeding 37,826 38,818 41,371 42,393 70,683 76,615 85,614 107,128 122,026 128,486
Days from first to last breeding 47,957 48,459 51,401 53,777 88,799 95,153 104,269 128,601 147,635 156,662
Conception rate for first breedings 45,066 46,829 49,676 51,739 80,984 89,872 98,937 120,328 138,131 144,578
Conception rate for all breedings 100,573 105,311 114,717 122,099 194,896 221,561 235,304 282,831 324,064 337,081
Calving interval 26,679 28,320 29,247 30,833 49,333 53,375 58,354 76,190 81,134 81,417




F) MILKING SHORTHORN
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 300 359 560 445 775 813 686 911 948 1,195
Days from calving to first breeding 313 386 604 472 793 852 710 937 994 1,246
Days from calving to last breeding 167 239 376 299 498 572 469 636 694 832
Days from first to last breeding 300 359 560 445 775 813 686 911 948 1,195
Conception rate for first breedings 253 310 469 378 658 724 612 791 805 1,047
Conception rate for all breedings 440 588 869 741 1,299 1,444 1,311 1,623 1,699 1,980
Calving interval 84 165 172 203 318 306 304 357 462 401




G) RED & WHITE
 
SAS Output
Trait 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Breedings per conception 1,096 1,276 1,234 1,101 1,379 1,292 1,168 1,206 1,215 1,173
Days from calving to first breeding 1,112 1,326 1,276 1,138 1,407 1,326 1,209 1,257 1,270 1,215
Days from calving to last breeding 755 865 861 763 982 889 867 914 835 861
Days from first to last breeding 1,096 1,276 1,234 1,101 1,379 1,292 1,168 1,206 1,215 1,173
Conception rate for first breedings 948 1,159 1,115 988 1,248 1,205 1,082 1,147 1,144 1,080
Conception rate for all breedings 2,248 2,970 2,667 2,440 3,302 2,952 2,529 2,742 2,634 2,453
Calving interval 505 612 514 534 686 584 566 582 591 563