@2017 by Performance Genetics LLC

Bayern, a lesson on genotype and pace

The racing performances of the Bob Baffert trainee Bayern confuses most pedigree guys. Bayern is by Offlee Wild, a son of Wild Again who placed in the Bluegrass Stakes G1 as a three year old and as a five year old won the Suburban Hcp G1 over a mile and a quarter (2000m). Bayern's dam is by the Kentucky Derby/Belmont/Travers Stakes winner Thunder Gulch. A basic pedigree read by most would say that he should have no problems going a mile and a quarter, maybe even a mile and a half against his own age group. For us he is a completely different horse to what his pedigree and common thought suggests. We first spotted this Grade One winner at the Fasig Tipton Maryland 2YO Sale with our soon to be

Bruce Lowe numbers, Mitochondrial DNA and Performance

Common to all mammalian species, Mitochondrial DNA (mtDNA) is inherited exclusively from the mother. Mutations of this mtDNA occur, often in adaptation for environmental conditions. Sets of mutations shared by a large number of individuals may have an effect on athletic performance but are commonly used to define maternally-linked populations known as clades or haplogroups, and sub-populations known as haplotypes . This has made mtDNA a very useful tool for studying the evolution of, and classifying, various species including the horse. Using mtDNA mutations as markers for familial segregation, Vila et al. 2001 first defined six haplogroups, A through F, in the equine mitochondrial genome.

Is Girth Circumference related to Heart Size in Thoroughbred Racehorses?

With the September Yearling Sales coming around the corner, one of the more common beliefs often quoted by yearling buyers is that a horse with a large girth has "plenty of heart room", thus by inference a large heart. Separating out the misconception that a large heart is necessarily a good thing (its not, it is dependent on the size of the horse), is there truly a relationship between girth circumference and heart size? We decided to dig up some data on 850 horses ranging from yearlings to older horses to see what the relationship might be. The girth circumference was measured in centimeters and ranged from 170cm to 190 cm. Heart size is commonly defined by the calculation of Left Ventricu