Category: Breeding Statistics

The Jockey Club Releases 2022 Breeding Statistics

louisianathoroughbred

The Jockey Club today reported that 1,248 stallions covered 28,548 mares in North America during 2022, according to statistics compiled through October 8, 2023. These breedings have resulted in 18,143 live foals of 2023 being reported to The Jockey Club on Live Foal Reports.

The Jockey Club estimates that the number of live foals reported so far is 85-90 percent complete. The reporting of live foals of 2023 is down 2.5 percent from last year at this time when The Jockey Club had received reports for 18,609 live foals of 2022.

In addition to the 18,143 live foals of 2023 reported through October 8, The Jockey Club also received 2,018 No Foal Reports for the 2023 foaling season. Ultimately, the 2023 registered foal crop is projected to reach 18,500.

The number of stallions declined 4.2 percent from the 1,303 reported for 2021 at this time last year, while the number of mares bred declined 1.8 percent from the 29,065 reported for 2021.

The 2023 breeding statistics are available alphabetically by stallion name through the Resources – Fact Book link on The Jockey Club homepage at jockeyclub.com.

Kentucky annually leads all states and provinces in terms of Thoroughbred breeding activity. Kentucky-based stallions accounted for 58.9 percent of the mares reported bred in North America in 2022 and 63.7 percent of the live foals reported for 2023.

The 16,827 mares reported bred to 208 Kentucky stallions in 2022 have produced 11,564 live foals, a 0.9 percent increase on the 11,460 Kentucky-sired live foals of 2022 reported at this time last year. The number of mares reported bred to Kentucky stallions in 2022 increased 0.2 percent compared to the 16,796 reported for 2021 at this time last year.

Among the 10 states and provinces with the most mares covered in 2022, four produced more live foals in 2023 than in 2022 as reported at this time last year: Kentucky, New York, Maryland, and Indiana.

The following table shows those 10 states and provinces with the most mares covered in 2022 sorted by number of state/province-sired live foals of 2023 reported through October 8, 2023.

2022 Mares Bred 2022 Live Foals 2023 Live Foals Percent Change in Live Foals
Kentucky 16,827 11,460 11,564 0.9%
California 1,867 1,303 1,138 -12.7%
Florida 1,529 927 829 -10.6%
New York 987 576 590 2.4%
Louisiana 924 570 564 -1.1%
Maryland 744 481 498 3.5%
Ontario 587 402 301 -25.1%
Pennsylvania 448 340 250 -26.5%
Indiana 558 231 243 5.2%
Oklahoma 481 293 220 -24.9%

The statistics include 227 progeny, 46 more than in 2022, of stallions standing in North America but foaled abroad, as reported by foreign stud book authorities at the time of publication.

Country Live Foals Country Live Foals
Australia 2 Republic of Korea 49
Dominican Republic 2 Kingdom of Saudi Arabia 71
France 3 Mexico 7
Great Britain 8 Panama 14
Ireland 26 Philippines 12
Japan 32 Sweden 1

The report also includes 67 mares bred to 23 stallions in North America on Southern Hemisphere time; the majority of these mares have not foaled. In 2021, there were 50 mares bred to 19 stallions in North America on Southern Hemisphere time.

As customary, a report listing the number of mares bred in 2023 will be released later this month.

The Jockey Club, founded in 1894 and dedicated to the improvement of Thoroughbred breeding and racing, is the breed registry for North American Thoroughbreds. In fulfillment of its mission, The Jockey Club, directly or through subsidiaries, provides support and leadership on a wide range of important industry initiatives, and it serves the information and technology needs of owners, breeders, media, fans and farms. It founded America’s Best Racing (americasbestracing.net), the broad-based fan development initiative for Thoroughbred racing, and in partnership with the Thoroughbred Owners and Breeders Association, operates OwnerView (ownerview.com), the ownership resource. Additional information is available at jockeyclub.com.

Jockey Club Reports 2021 Foal Crop Down 3.3%

louisianathoroughbred
October 8, 2021

 

The Jockey Club reported that 1,447 stallions covered 29,699 mares in North America during 2020, according to statistics compiled through October 4, 2021. These breedings have resulted in 19,021 live foals of 2021 being reported to The Jockey Club on Live Foal Reports.

The Jockey Club estimates that the number of live foals reported so far is 85-90 percent complete. The reporting of live foals of 2021 is down 3.3 percent from last year at this time when The Jockey Club had received reports for 19,677 live foals of 2020.

In addition to the 19,021 live foals of 2021 reported through October 4, The Jockey Club also received 2,195 No Foal Reports for the 2021 foaling season. Ultimately, the 2021 registered foal crop is projected to reach 19,200.

The number of stallions declined 6.8 percent from the 1,552 reported for 2019 at this time last year, while the number of mares bred declined 4.8 percent from the 31,198 reported for 2019.

The 2020 breeding statistics are available alphabetically by stallion name through the Resources – Fact Book link on The Jockey Club homepage at jockeyclub.com.

Kentucky annually leads all states and provinces in terms of Thoroughbred breeding activity. Kentucky-based stallions accounted for 55.5 percent of the mares reported bred in North America in 2020 and 60.6 percent of the live foals reported for 2021.

The 16,485 mares reported bred to 212 Kentucky stallions in 2020 have produced 11,535 live foals, a 2.7 percent decrease on the 11,851 Kentucky-sired live foals of 2020 reported at this time last year. The number of mares reported bred to Kentucky stallions in 2020 decreased 4.4 percent compared to the 17,240 reported for 2019 at this time last year.

Among the 10 states and provinces with the most mares covered in 2020, three produced more live foals in 2021 than in 2020 as reported at this time last year: Maryland, Ontario, and New Mexico. The following table shows the top 10 states and provinces ranked by number of state/province-sired live foals of 2021 reported through October 4, 2021.

2020 Mares Bred 2020 Live Foals 2021 Live Foals Percent Change in Live Foals
Kentucky 16,485 11,851 11,535 -2.7%
California 1,877 1,390 1,253 -9.9%
Florida 1,811 1,156 1,002 -13.3%
New York 1,032 652 649 -0.5%
Louisiana 1,101 647 631 -2.5%
Maryland 832 506 524 3.6%
Pennsylvania 793 510 449 -12.0%
Ontario 594 350 359 2.6%
New Mexico 637 313 326 4.2%
Oklahoma 576 342 271 -20.8%

The statistics include 243 progeny of stallions standing in North America but foaled abroad, as reported by foreign stud book authorities at the time of publication.

Country Live Foals Country Live Foals
Saudi Arabia 66 Philippines 3
Japan 54 Panama 2
Ireland 47 Australia 1
Republic of Korea 30 Italy 1
France 16 Jamaica 1
Great Britain 16 Mexico 1
Turkey 4 Sweden 1

The report also includes 64 mares bred to 23 stallions in North America on Southern Hemisphere time; the majority of these mares have not foaled.

As customary, a report listing the number of mares bred in 2021 will be released later this month.

Mares Bred in Louisiana Drops 12.5% in 2019

louisianathoroughbred

The Jockey Club today released Report of Mares Bred (RMB) statistics for the 2019 breeding season. Based on RMBs received through October 16, 2019, The Jockey Club reports that 1,134 stallions covered 29,218 mares in North America during 2019.

The Jockey Club estimates an additional 2,500 to 3,500 mares will be reported as bred during the 2019 breeding season.

The number of stallions declined 6.6% from the 1,214 reported at this time in 2018, and the number of mares bred decreased 3.5% from the 30,274 reported last year. Consistent with prior years’ reporting of stallions by book size, the number of stallions covering 125 or more mares increased from 62 in 2018 to 65 in 2019.

Further book size analysis shows a 6.7% increase in the number of mares bred to stallions with a book size of 125 or more in 2019 when compared to 2018 as reported at this time last year; a 9.1% decrease in mares bred to stallions with a book size between 100 and 124; a 9.1% decrease in mares bred to stallions with a book size between 75 and 99; a 16.7% decrease in mares bred to stallions with a book size between 50 and 74; a 12.4% decrease in mares bred to stallions with a book size between 25 and 49; and a 1.0% increase in mares bred to stallions with a book size fewer than 25.

The percentage of broodmares covered by stallions serving 125 or more mares increased from 31.9% in 2018 to 35.3% in 2019. From 2015-2017, this percentage had remained fairly constant at approximately 29%, up from 20.5% in 2014.

The proportion of stallions with book sizes of 125 or more mares grew from 5.1% in 2018 to 5.7% in 2019. It had previously grown from 3.1% in 2014 to 4.5% from 2015-2017.

2014 2015 2016 2017 2018 2019
% stallions with book size >125 3.1% 4.5% 4.5% 4.5% 5.1% 5.7%
% mares covered by stallions with book size >125 20.5% 29.1% 28.7% 29.4% 31.9% 35.3%

Note: Statistics summarized as of October 16 of the breeding seasons indicated in the columns above; as reports of mares bred continue to be received, final statistics are subject to change.

RMB statistics for all reported stallions in 2019 are available through the Fact Book section of The Jockey Club’s website at jockeyclub.com.

The stallions Justify and Mendelssohn led all stallions with 252 mares bred by each in 2019. Rounding out the top five by number of RMBs were Into Mischief, 241; Uncle Mo, 241; and Goldencents, 239.

Kentucky traditionally leads North America in Thoroughbred breeding activity. During 2019, Kentucky’s 220 reported stallions covered 17,123 mares, or 58.6% of all of the mares reported bred in North America. The number of mares bred to Kentucky stallions decreased 1.1% percent compared with the 17,322 reported at this time last year.

Of the top 10 states and provinces by number of mares reported bred in 2019, Pennsylvania and Oklahoma stallions covered more mares in 2019 than in 2018, as reported at this time last year. The following table shows the top 10 states and provinces ranked by number of mares reported bred in 2019:

State/Province 2018 Stallions 2019 Stallions Pct. Change 2018 Mares Bred 2019 Mares Bred Pct. Change
Kentucky 228 220 -3.5% 17,322 17,123 -1.1%
California 137 124 -9.5% 2,482 2,018 -18.7%
Florida 78 81 3.8% 1,917 1,863 -2.8%
New York 48 43 -10.4% 1,115 1,058 -5.1%
Louisiana 80 79 -1.3% 1,125 984 -12.5%
Maryland 30 31 3.3% 867 780 -10.0%
Pennsylvania 32 28 -12.5% 610 686 12.5%
Ontario 37 29 -21.6% 620 538 -13.2%
Oklahoma 43 38 -11.6% 470 479 1.9%
New Mexico 62 51 -17.7% 467 437 -6.4%

Note: Each incident in which a mare was bred to more than one stallion and appeared on multiple RMBs is counted separately. As such, mares bred totals listed in the table above may differ slightly from counts of distinct mares bred.

In addition, Report of Mares Bred information on stallions that bred mares in North America is available through report 36P or a subscription service at equineline.com/ReportOfMaresBred.

The Jockey Club, founded in 1894 and dedicated to the improvement of Thoroughbred breeding and racing, is the breed registry for North American Thoroughbreds. In fulfillment of its mission, The Jockey Club, directly or through subsidiaries, provides support and leadership on a wide range of important industry initiatives, and it serves the information and technology needs of owners, breeders, media, fans and farms. It founded America’s Best Racing (americasbestracing.net), the broad-based fan development initiative for Thoroughbred racing, and in partnership with the Thoroughbred Owners and Breeders Association, operates OwnerView (ownerview.com), the ownership resource. Additional information is available at jockeyclub.com.

The Jockey Club Releases 2018 Breeding Statistics

louisianathoroughbred

The Jockey Club today reported that 1,630 stallions covered 32,508 mares in North America during 2018, according to statistics compiled through Sept. 26, 2019. These breedings have resulted in 20,363 live foals of 2019 being reported to The Jockey Club on Live Foal Reports.

The Jockey Club estimates that the number of live foals reported so far is approximately 90 percent complete. The reporting of live foals of 2019 is down 3.6 percent from last year at this time when The Jockey Club had received reports for 21,130 live foals of 2018.

In addition to the 20,363 live foals of 2019 reported through Sept. 26, The Jockey Club also received 2,405 No Foal Reports for the 2019 foaling season. Ultimately, the 2019 registered foal crop is projected to reach 20,800.

The number of stallions declined 8.3 percent from the 1,778 reported for 2017 at this time last year, while the number of mares bred declined 5.2 percent from the 34,288 reported for 2017.

The 2018 breeding statistics are available alphabetically by stallion name through the Resources – Fact Book link on The Jockey Club homepage at jockeyclub.com.

Kentucky annually leads all states and provinces in terms of Thoroughbred breeding activity. Kentucky-based stallions accounted for 53.7 percent of the mares reported bred in North America in 2018 and 59.9 percent of the live foals reported for 2019.

The 17,446 mares reported bred to 241 Kentucky stallions in 2018 have produced 12,200 live foals, a 1.4 percent decrease on the 12,370 Kentucky-sired live foals of 2018 reported at this time last year. The number of mares reported bred to Kentucky stallions in 2018 increased 0.3 percent compared to the 17,401 reported for 2017 at this time last year.

Among the 10 states and provinces with the most mares covered in 2018, three produced more live foals in 2019 than in 2018 as reported at this time last year: California, Louisiana, and Maryland. The following table shows the top 10 states and provinces ranked by number of state/province-sired live foals of 2019 reported through Sept. 26, 2019.

2018 Mares Bred 2018 Live Foals 2019 Live Foals Percent Change in Live Foals
Kentucky 17,446 12,370 12,200 -1.4%
California 2,546 1,577 1,612 2.2%
Florida 2,057 1,217 1,164 -4.4%
Louisiana 1,207 713 728 2.1%
New York 1,122 777 703 -9.5%
Maryland 877 483 537 11.2%
Ontario 730 495 377 -23.8%
Pennsylvania 680 373 339 -9.1%
New Mexico 678 372 307 -17.5%
Oklahoma 646 329 289 -12.2%

The statistics include 303 progeny of stallions standing in North America but foaled abroad, as reported by foreign stud book authorities at the time of publication.

Country Live Foals Country Live Foals
Saudi Arabia 107 Russia 9
Republic of Korea 57 India 8
Ireland 27 Australia 6
Japan 22 Argentina 6
Great Britain 15 Panama 5
Philippines 15 Barbados 4
France 12 Peru 1
Mexico 9

The report also includes 86 mares bred to 14 stallions in North America on Southern Hemisphere time; the majority of these mares have not foaled.

As customary, a report listing the number of mares bred in 2019 will be released later this month.

Study Connects Rise in Inbreeding to Larger Books

louisianathoroughbred

An analysis of inbreeding over 45 years shows the biggest increase during 1996-2006.

 

A 2011 study showing an increase in inbreeding in the Thoroughbred during a 45-year period from 1961-2006 also concluded the majority of the increase occurred during the last 10 years of the study period—a time coinciding with a sharp rise in the number of stallions being bred to books of 100 mares or more. Dr. Matthew Binns was the lead author of the study “Inbreeding in the Thoroughbred horse” that appeared in a June 2011 edition of Animal Genetics. The genotyping of 467 Thoroughbreds born between 1961-2006 showed an increase in the average inbreeding coefficient. More significantly, the study notes, the majority of the increase occurred during 1996-06, when the number of North American stallions breeding 100 or more mares in a given season rose from 14 to 128. In 1996, 14 North American stallions covered 100 mares or more. Only five years earlier only one stallion—Alydar—had bred a book of mares exceeding 100.

“My conclusion was that the data was showing the start of a trend that could become worrisome and needed monitoring,” Binns told BloodHorse. “It was starting to show this increase as a result of the big books.”

 

Read BloodHorse Article

The Jockey Club Considers Rule Regarding Breeding Stallions

louisianathoroughbred

The Jockey Club board of stewards, concerned with the narrowing of the diversity of the Thoroughbred gene pool, today announced its consideration of a rule to limit the annual breeding of individual stallions starting with the 2021 breeding season.

The Jockey Club, established in 1894, is the keeper of the American Stud Book and maintains the Principal Rules and Requirements of the American Studbook in order to ensure the welfare of the Thoroughbred breed.

As has been widely reported, the size of the North American foal crop has diminished significantly, from 37,499 in 2007 to the 20,500 estimated for 2020.

In 2007, 37 stallions reported in excess of 140 mares bred each from a total of 3,865 stallions. By 2010, that number had declined to 24. Since then, the number has nearly doubled to 43 stallions reporting 140 or more mares bred from a population of stallions that now stands at less than one-half that of 2007.

On the mare side, in 2007, 5,894 mares (9.5% of the total) were bred by stallions that covered more than 140 mares. By 2019, 7,415 mares (27% of the total) were covered by stallions with books of more than 140, a threefold increase.

The combination of these changes has resulted in a substantial increase in the percentage of foals produced by a discreet segment of stallions — signaling a worrisome concentration of the gene pool.

The board of stewards of The Jockey Club is considering a cap of 140 mares bred per individual stallion per calendar year in North America, phased-in, as follows:

  • Stallions entering stud service for the first time in 2020 would be exempt from the 140 limit through the 2023 season
  • Stallions that entered stud service in 2019 would be exempt through the 2022 season
  • Stallions that entered stud service in 2018 would be exempt through the 2021 season
  • Stallions that entered service in 2017 or prior would be subject to the 140 cap as of January 1, 2021

The stewards will continue to study the decreasing diversity of the Thoroughbred gene pool and its cause and potential effects over the course of time. As more data and analyses become available, the stewards may revise The Jockey Club’s approach to protecting the breed’s health and welfare.

The Jockey Club solicits and welcomes comments on the proposed rule from breeders, owners, and others with interests in the Thoroughbred breed and the industry. Contact The Jockey Club at jockeyclub.com.

2019 Jockey Club Fact Book Available

louisianathoroughbred

As of Thursday, February 14, 2019, The Jockey Club’s 2019 edition of the Fact Book is available in the Resources section of its website at jockeyclub.com.

The online Fact Book is a statistical and informational guide to Thoroughbred breeding, racing and auction sales in North America. It also features a directory of Canadian, international, national, and state organizations.

Links to the Breeding Statistics report that is released by The Jockey Club each September and the Report of Mares Bred information that is published by The Jockey Club each October can be found in the Breeding section of the Fact Book. Starting this year, the Fact Book will be updated quarterly, and additional statistics will be made available in the coming months to provide additional insight into overall trends in Thoroughbred breeding, sales, and racing.

The 2019 editions of State Fact Books, which feature detailed breeding, racing and auction sales information specific to numerous states, Canadian provinces, and Puerto Rico, are also available on The Jockey Club website. The State Fact Books are updated monthly.

The Jockey Club, founded in 1894 and dedicated to the improvement of Thoroughbred breeding and racing, is the breed registry for North American Thoroughbreds. In fulfillment of its mission, The Jockey Club, directly or through subsidiaries, provides support and leadership on a wide range of important industry initiatives, and it serves the information and technology needs of owners, breeders, media, fans and farms. It is the sole funding source for America’s Best Racing, the broad-based fan development initiative for Thoroughbred racing. You can follow America’s Best Racing at americasbestracing.net. Additional information is available at jockeyclub.com.

The Jockey Club Releases 2018 Report of Mares Bred Statistics

louisianathoroughbred

The Jockey Club today released Report of Mares Bred (RMB) statistics for the 2018 breeding season. Based on RMBs received through October 16, 2018, The Jockey Club reports that 1,214 stallions covered 30,274 mares in North America during 2018.

The Jockey Club estimates an additional 3,000 to 4,000 mares will be reported as bred during the 2018 breeding season.

The number of stallions declined 9.5% from the 1,342 reported at this time in 2017, and the number of mares bred decreased 5.0% from the 31,863 reported last year. The number of stallions covering 125 or more mares increased from 60 in 2017 to 62 in 2018.

Further book size analysis shows a 3.0% increase in the number of mares bred to stallions with a book size of 125 or more in 2018 when compared to 2017 as reported at this time last year; a 1.4% decrease in mares bred to stallions with a book size between 100 and 124; a 7.0% increase in mares bred to stallions with a book size between 75 and 99; a 6.7% decrease in mares bred to stallions with a book size between 50 and 74; a 9.6% decrease in mares bred to stallions with a book size between 25 and 49; and a 16.7% decrease in mares bred to stallions with a book size fewer than 25.

The percentage of broodmares covered by large book size (125 or more) stallions increased from 29.4% in 2017 to 31.9% in 2018. From 2015-2017, this percentage had remained constant at approximately 29%, up from 20.5% in 2014.

The proportion of stallions with book sizes of 125 or more mares grew from 3.1% in 2014 to 4.5% from 2015-2017. In 2018, this proportion increased to 5.1%.

2014 2015 2016 2017 2018
% stallions with book size >125 3.1% 4.5% 4.5% 4.5% 5.1%
% mares covered by stallions with book size >125 20.5% 29.1% 28.7% 29.4% 31.9%

Note: Statistics summarized as of October 16 of the breeding seasons indicated in the columns above; as reports of mares bred continue to be received, final statistics are subject to change.

RMB statistics for all reported stallions in 2018 are available through the Fact Book section of The Jockey Club’s website at jockeyclub.com.

The stallion Into Mischief led all stallions with 245 mares bred in 2018. Rounding out the top five by number of RMBs were Cupid, 223; Klimt, 222; Practical Joke, 220; and, Violence, 214.

Kentucky traditionally leads North America in Thoroughbred breeding activity. During 2018, Kentucky’s 228 reported stallions covered 17,322 mares, or 57.2% of all of the mares reported bred in North America. The number of mares bred to Kentucky stallions increased 0.3% percent compared with the 17,275 reported at this time last year.

Of the top 10 states and provinces by number of mares reported bred in 2018, Kentucky, California, Maryland, and Pennsylvania stallions covered more mares in 2018 than in 2017, as reported at this time last year. The following table shows the top 10 states and provinces ranked by number of mares reported bred in 2018:

State/Province 2017 Stallions 2018 Stallions Pct. Change 2017 Mares Bred 2018 Mares Bred Pct. Change
Kentucky 229 228 -0.4% 17,275 17,322 0.3%
California 137 137 0.0% 2,356 2,482 5.3%
Florida 92 78 -15.2% 2,073 1,917 -7.5%
Louisiana 93 80 -14.0% 1,235 1,125 -8.9%
New York 58 48 -17.2% 1,326 1,115 -15.9%
Maryland 30 30 0.0% 768 867 12.9%
Ontario 38 37 -2.6% 810 620 -23.5%
Pennsylvania 36 32 -11.1% 563 610 8.3%
Indiana 59 57 -3.4% 554 506 -8.7%
Oklahoma 54 43 -20.4% 537 470 -12.5%

Note: Each incident in which a mare was bred to more than one stallion and appeared on multiple RMBs is counted separately. As such, mares bred totals listed in the table above may differ slightly from counts of distinct mares bred.

In addition, Report of Mares Bred information on stallions that bred mares in North America is available through report 36P or a subscription service at equineline.com/ReportOfMaresBred.

The Jockey Club, founded in 1894 and dedicated to the improvement of Thoroughbred breeding and racing, is the breed registry for North American Thoroughbreds. In fulfillment of its mission, The Jockey Club, directly or through subsidiaries, provides support and leadership on a wide range of important industry initiatives, and it serves the information and technology needs of owners, breeders, media, fans and farms. It is the sole funding source for America’s Best Racing, the broad-based fan development initiative for Thoroughbred racing. You can follow America’s Best Racing at americasbestracing.net. Additional information is available at jockeyclub.com.

The Jockey Club Releases 2017 Breeding Statistics

louisianathoroughbred

Monday, October 01, 2018

The Jockey Club today reported that 1,778 stallions covered 34,288 mares in North America during 2017, according to statistics compiled through Sept. 26, 2018. These breedings have resulted in 21,130 live foals of 2018 being reported to The Jockey Club on Live Foal Reports.

The Jockey Club estimates that the number of live foals reported so far is approximately 90 percent complete. The reporting of live foals of 2018 is down 2.3 percent from last year at this time when The Jockey Club had received reports for 21,624 live foals of 2017.

In addition to the 21,130 live foals of 2018 reported through Sept. 26, The Jockey Club also received 2,516 No Foal Reports for the 2018 foaling season. Ultimately, the 2018 registered foal crop is projected to reach 21,500.

The number of stallions declined 4.6 percent from the 1,863 reported for 2016 at this time last year, while the number of mares bred declined 4.9 percent from the 36,045 reported for 2016.

The 2017 breeding statistics are available alphabetically by stallion name through the Resources – Fact Book link on The Jockey Club homepage at jockeyclub.com.

“It is important to note that the live foals reported in The Jockey Club breeding statistics are by conception area and do not represent the state in which a foal was born,” said Matt Iuliano, executive vice president and executive director, The Jockey Club. “Breeding statistics also are not a representation of a stallion’s fertility record.”

Kentucky annually leads all states and provinces in terms of Thoroughbred breeding activity. Kentucky-based stallions accounted for 50.7 percent of the mares reported bred in North America in 2017 and 58.5 percent of the live foals reported for 2018.

The 17,401 mares reported bred to 235 Kentucky stallions in 2017 have produced 12,370 live foals, a 0.2 percent decrease on the 12,396 Kentucky-sired live foals of 2017 reported at this time last year. The number of mares reported bred to Kentucky stallions in 2017 decreased 2.9 percent compared to the 17,912 reported for 2016 at this time last year.

Among the 10 states and provinces with the most mares covered in 2017, only three produced more live foals in 2018 than in 2017 as reported at this time last year: Ontario, New Mexico, and Pennsylvania. The following table shows the 10 states and provinces, ranked by number of state/province-sired live foals of 2018 reported through Sept. 26, 2018.

2017 Mares Bred 2017 Live Foals 2018 Live Foals Percent Change in Live Foals
Kentucky 17,401 12,396 12,370 -0.2%
California 2,573 1,726 1,577 -8.6%
Florida 2,286 1,514 1,217 -19.6%
New York 1,344 912 777 -14.8%
Louisiana 1,336 799 713 -10.8%
Ontario 908 397 495 24.7%
Maryland 783 500 483 -3.4%
New Mexico 794 370 372 0.5%
Pennsylvania 673 289 373 29.1%
Oklahoma 773 341 329 -3.5%

The statistics include 334 progeny of stallions standing in North America but foaled abroad, as reported by foreign stud book authorities at the time of publication.

Country Live Foals Country Live Foals
Republic of Korea 117 India 4
Saudi Arabia 72 Peru 3
Ireland 33 Russia 3
Great Britain 25 Dominican Republic 2
Japan 24 Germany 2
Philippines 20 Barbados 1
Australia 12 Brazil 1
Argentina 7 Pakistan 1
Mexico 6 Venezuela 1

The report also includes 90 mares bred to 27 stallions in North America on Southern Hemisphere time; the majority of these mares have not foaled.

As customary, a report listing the number of mares bred in 2018 will be released later this month.