This survey was made using my database (extensive but no way complete) and considered foals born between 1998 to 2001 inclusive.

The sample size is 40593. The number of these with one or more RF's is 3809. This suggests that just under 9.4% foals incorporate mating to superior females.  This result is rather surprising because the last time I looked 5 or 6 years ago this it was about 5%. I think that early 90's in particular this way of inbreeding was made more popular and the rise could be because of that. Another explanation for the rise in popularity might be the sources through which the superior mares are found are popular.

Next stage was to look at those 3809. Of these I have thrown out those mares that appear in less than 5 pedigrees.

Here's the top 5.

Name Occurs
NATALMA 894
ALMAHMOUD 619
SOMETHINGROYAL 365
LALUN 198
FLOWER BOWL 116
Total 2192

These 5 account for over 60% of the RF's inbreedings found. The other thing that is pretty clear is that they are also found through the very strongest contempary stallions.

One thing that I should state here that there has been some double counting. Most foals had just one mare being inbred to but 259 had two and a handful had more. The vast majority of the 259 matings with more than one RF's nearly all involved Almahmoud behind Natalma or alongside others.  I counted these twice.

As an aside those 259 with more than one RF had a few successes. Namely:

Group 1 winners
ASHADO = Cosmah & Almahmoud
DENEBOLA = Natalma & Almahmoud
STORMING HOME = Natalma & Almahmoud
AL MAHER = Natalma & Almahmoud
SOUND ACTION = Natalma & Flaming Page
POMP AND GLORY = Love Game & Knight's Daughter
JOHAR = Mixed Marriage & Somethingroyal

Group 2 winners
CHANCELLOR = Flaming Page & Mesopotamia
IRRESISTIBLE JEWEL = Flower Bowl & Natalma

Group 3 winners
ANTIOQUIA = Special & Almahmoud
MAGIC MISSION = Natalma & Almahmoud
DEEP SUMMER= Thong & Almahmoud

Anyway, I digress.

By far the most popular RF is crossing Natalma. I need to scrutinise this further, and will do so, but my gut feeling is that the majority of Natalma RF's are the crossing of Northern Dancer and his sisters Raise The Standard and Spring Adieu. Sex-balancing may have some part to play here. Also a quick look at the pedigrees of the two mares and one sees their sires are Buckpasser and Hoist The Flag. Maybe we are seeing an affinity between Northern Dancer and two other top class sires. Or are we seeing Northern Dancer x Northern Dancer again! I do need to have a deeper look but a lot of the Natalma successes will be thus inbred. For instance, Spring Adieu = Razyana = Danehill and there are lots of Danehill x Northern Dancer's stakes winners around.

Now seeing that 60% of the RF's are via just 5 mares I thought I'd have a look at the successful RF's. Of the 3809 RF foals a total of 719 are stakes winners. I would think that any pedigree analyst alive would think 18.9% stakes winners to foals is a win position!

Here's the top 10 in stakes wins order.

Mare

Total
RF

Stakes
RF

%

NATALMA 894 203 22.7%
ALMAHMOUD 619 137 22.1%
SOMETHINGROYAL 365 64 17.5%
LALUN 198 50 25.3%
FLAMING PAGE 99 27 27.3%
FLOWER BOWL 116 24 20.7%
THONG 81 21 25.9%
SPECIAL 78 18 23.1%
GOLD DIGGER 65 12 18.5%
ROUGH SHOD II 58 12 20.7%
Total 2573 568 22.1%

Inbreeding to these mares is certainly not a bad thing to do. 

As I have calculated the %SW's to foals I may has well add that two mares did very well. In 2nd place was Lady Angela who was RF in 10 foals. 6 of these, all folaed in Japan, were stakes winners. CRAFT WORK, DREAM COME TRUE, MEINER AMUNDSEN, MOERE TREASURE, NAMURA BIG TIME, ONE MORE CHATTER. The one with the best percentage was Mixed Marriage at 7 from 11! CARRIZO CREEK, CARTOGRAPHY, FATHER THAMES, MR KRISLEY, SUPREME DISCOVERY, T E LAWRENCE and Johar (also Somethingroyal).  The 7 from 11 should possibly be 8 from 11 because we have to count the top hurdler MOVE WEST.

Now for some that did not come out that well

Mare

Total
RF

Stakes
RF

%

GREY FLIGHT 83 5 6.0%
SHENANIGANS 18 1 5.6%
ALANESIAN 20 1 5.0%
MISSY BABA 29 1 3.4%
PLUM CAKE 13 0 0%
RELANCE 11 0 0%
MY DEAR GIRL 9 0 0%
BRAMALEA 8 0 0%
BANISH FEAR  7 7 0%

Now a disclaimer. This is only using foals 98, 99, 00 and 01.  Things are not static and maybe using different years would give different results. Also for the worse case the numbers found are quite small so perhaps a pinch of salt is needed.

Grey Flight does not look that great a move though and some people swear by her. The 5 I found for her in the above mentioned timeframe are:
ADJUDI MITSUO
HASNA
WACKY PATTY
I LOVE SILVER
NUCLEAR ASSEMBLY

If I have missed any please let me know. Also looking at these six it is difficult not to notice that top class stallion What A Pleasure features in them. 

Anyway, a lot more investigation still to be done.  The raw numbers does confirm that incorporating inbreeding to superior mares it is a favourable thing to do. However, lots of the successful RF's are often through one and often two top class stallions and it could well be the interplay of these is distorting the results. Either way the one's that work are really high class so the mantra should be to follow whatever breeding scheme suits you but make sure that you inbred to top class breeding stock.

---------------

Since finishing the article I decided to look at those Gr1 winners with RF inbreeding.  Could there be alternative reasons?  I'll link to their pedigrees, give the female inbreeding and suggest another reason other than female inbreeding.  I think there is plenty of evidence here to suggest that if there is power in the female inbreeding it nearly always comes through top class stallions and/or top class brothers and sisters.  

Horse Female inbreeding Description - alternate reason!
ADJUDI MITSUO Grey Flight 5x5 through Adjudicating via reine Resolver & What A Pleasure
ADMIRE MAX Almahmoud 4 x5 Halo x Northern Dancer
AL MAHER Natalma
Almahmoud
Danehill x Northern Dancer
ALBERTO GIACOMETTI Lalun 4x5 Bold Reason & Never Bend
ALEXANDER GOLDRUN Glaneuse 4x5 Northern Dancer 4x4
AMERICAN POST Almahmoud 4x5 Arctic Tern & Northern Dancer 4x3
ANCIENT WORLD Natalma 4x5 Northern Dancer & sister Raise The Standard via Machiavellian
ANGARA Pocahontas II 3x5 Alzao & Tom Rolfe sire line
APERITIVO Thong 4x5 Brother + sister Special (via Nureyev) and Thatch
AQUARELLISTE Natalma 4,4 x 5 Danehill x Northern Dancer
ASAKUSA DEN'EN Natalma 5x5 Halo 3x4 and
Natalma through Northern Dancer and sister Raise The Standard
ASHADO Cosmah 3x5
Almahmoud 4x5
Halo x Northern Dancer (Mari's Book)
BALLINGARRY Lalun 4x5 Bold Reason & Never Bend
BELIEVE Almahmoud 4x5 Halo x Northern Dancer
BRAMBLE ROSE Almahmoud 5x5 Northern Dancer x Gleam Machine
BRIGHT SKY Rough Shod 5x5 Brother + sister Thong and Lt Stevens.  Nureyev x Nijinsky II
CARRY ON KATIE Special 3x5 Mr Prospector 3x3 and Nureyev over Sadler's Wells
COUNT DUBOIS Somethingroyal 5x5 Northern Dancer 4x4. Secretariat & Sir Gaylord
DAIWA MAJOR Almahmoud 4x5 Halo x Northern Dancer
DANCE IN THE MOOD Almahmoud 4x5 Halo x Northern Dancer
DANESTORM Natalma 4,4 x 4 Danehill x Northern Dancer
DANNI MARTINE Flower Bowl 5x5 Full brothers His Majesty & Graustark
DELTA BLUES Almahmoud 5x5 Northern Dancer 4x3 or Halo/Northern Dancer
DENEBOLA Natalma 4x4 Northern Dancer and sister Raise The Standard.
Also Northern Dancer x Halo
DESSERT Somethingroyal 5x5 Secretariat & Sir Gaylord
DIZELLE Natalma 4x4,4 Northern Dancer x Danehill
DONA INGRID Almahmoud 5x5,5 Northern Dancer 3x3 with Halo
DOYEN Lalun 4x5 Bold Reason & Never Bend
DURANDAL Almahmoud 4x5 Halo x Northern Dancer
EXCEED AND EXCEL Natalma 4,4 x 4 Danehill x Northern Dancer
FASTNET ROCK Natalma 4,4 x 5 Danehill x Northern Dancer
FOGOSO NOV Rough Shod 5x5 Brother + sister Thong and Ridan.  Nureyev x Nijinsky II.
Prince John 4x4
FOND FANTASY Glamour 5x5 Top Indian Stallion Razeen x Seattle Slew
FORTY FABULOSO Flower Bowl 5x5 Brothers His Majesty & Graustark
FULL SPEED Lalun 5x5 Bold Reason & Never Bend
Northern Dancer 3,4 x5
GOLD ALLURE Almahmoud 4 x5 Halo x Northern Dancer
GOLDEN ALLURE Almahmoud 4 x5 Halo x Northern Dancer
HASNA Grey Flight 5x5 Tom Fool 4,4 x5
Snippets x What A Pleasure
HEAVENLY ROMANCE Almahmoud 4 x5 Halo x Northern Dancer
Hail To Reason 3x5
INTENDANT Lis 5,5 x5 Full brother and sister Literat & Liberty
Surumu 3x3
JOHAR Mixed Marriage 4x4


Somethingroyal 4x5
Gone West x Sharpen Up
Secretariat & Sir Gaylord
Native Dancer 4x5
Nashua 4x5
JYMCAREW Natalma 5,5 x 5 Danehill x Northern Dancer
KING CHARLEMAGNE Almahmoud 4 x5 Halo x Northern Dancer
LACHLAN RIVER Natalma 5,5, 5 x5 Danehill x Northern Dancer x Northern Dancer
LAD OF THE MANOR All My Eye 4x5 Full brother and sister Isolt and Round Eye
LUNAR SOVEREIGN Knight's Daughter 5x4 Full sister and brother Monarchy & Round Table
MACAVELLI MISS Natalma 5x5 Brother and sister Raise The Standard & Northern Dancer.
Raise A Native 4x5
Nijinsky x Danzig
Turn-To 5x5
MAKYBE DIVA Natalma 5,5, 5 x5 Danehill x Northern Dancer x Northern Dancer
MILLENNIUM BIO Almahmoud 4 x5 Halo x Northern Dancer
MINARDI Knight's Daughter 5x5 Full sister and brother Monarchy & Round Table
Northern Dancer 3x5
MISS LOREN Trevisa 5x5 Full sister and brother Trevisana & Forli
Nashua 4x4
MISTER FANUCCI Pocahontas II 5x5 Tom Rolfe x Cheiftian
Raise A Native 4x4
MOZART Flower Bowl 5x5 Full brothers His Majesty & Graustark
NEW FAMOUS Natalma 4x5 Brother and sister Raise The Standard & Northern Dancer.
NOBLE EAGLE Lalun 5x5 Bold Reason & Never Bend
Northern Dancer 3x5
NOVERRE Almahmoud 5x4 Halo x Northern Dancer
OUTOFTHEBOX Old Bess 4x3 This one probably wouldn't qualify as RF!
1948 mare inbred 4x3 .. unreal
PARADISUS Rough SHod II 5x5 Full brother/sister Thong & Ridan
PATAVELLIAN Natalma 4x5 Northern Dancer & sister Raise The Standard via Machiavellian
PLATINUM SCISSORS Natalma 4,4x5 Danehill x Northern Dancer
POMP AND GLORY Love Game 4x4
Knight's Daughter 4,5x5
Through 2 sires Tell x Brauner!
So complex! Full + 3/4 with reinforcement
PUNCTILIOUS Natalma 4,4x5 Danehill x Northern Dancer
RIGHT APPROACH Natalma 4x5
Almahmoud 5x5
Northern Dancer & sister Raise The Standard via Machiavellian
ROCK OF GIBRALTAR Natalma 4,4x4 Danehill x Northern Dancer
RUSSIAN PEARL Rose O'Lynn 4x5 Relic 4x5,5
SARABANDE Thong 4x5 Brother + sister Thatch & Special (via Nureyev)
SCINTILLATION Natalma 4,4x5 Danehill x Northern Dancer
SEQUOYAH Lalun 4x5 Bold Reason & Never Bend
Native Dancer 4x4
SHINE BRIDGE Somethingroyal 5x5 Secretariat & Sir Gaylord
SLIGO BAY Almahmoud 4x4 Northern Dancer x Halo
Hail To Reason 4x3
SOLDIER HOLLOW Thong 5x5 Full sisters Special and Lisadell
Northern Dancer 3x5,5
SOUND ACTION Natalma 5x5
Flaming Page 5x5
Raise The Standard (Machiavellian) x Northern Dancer
Nijinsky II x The Minstrel
SOUTHERN IMAGE Almahmoud 4x5 Halo x Northern Dancer
SPARTACUS Natalma 4,4x5 Danehill x Northern Dancer
SPECTACULAR QUEST Numbered Account 4x4 Top Indian based stallions Placerville and Razeen
STARTAC Pange 4x4 Tail female.
Northern Dancer (3nd gen) x Mr Prospector (broodmare sire)
STILL IN LOVE Almahmoud 4x5 Halo x Northern Dancer
Hail To Reason 3x3
STORMING HOME Natalma 4x4 Northern Dancer and sister again.
Mr Prospector 2x3
TAMURO CHERRY Somethingroyal 5x5 Secretariat & Sir Gaylord
Northern Dancer 3x5
TATES CREEK Almahmoud 5x5 Halo x Northern Dancer
TOBOUGG Somethingroyal 5x4 Secretariat & Sir Gaylord
TOO LATE NOW Gold Digger 4x5 Full brothers Mr Prospector and Search For Gold
+ extra line of Raise A Native
TORRESTRELLA Almahmoud 5x5 Northern Dancer 4x5
Raise The Standard (Orpen) x Northern Dancer
VALLEE ENCHANTEE Rough Shod II 5x5 Full brother and sister Thong and Lt Stevens
Nureyev 2x3! !
VENGEANCE OF RAIN Natalma 5x5,5 Northern Dancer x Danehill
WHIPPER Special 4x4 Nureyev x Sadler's Wells
WINESTOCK Natalma 3x5 Northern Dancer and sister again.

Adrian Parry Copyright 2006


 

 

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