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Galopin...New Research, and a possible answer to an old question....

Tuesday, May 21, 2019 8:11 AM

The summer of 2017 saw the publication of a scientific paper titled "Y Chromosome Uncovers the Recent Oriental Origin of Modern Stallions" with the outcomes found in this paper covered by Eric Mitchell in the Blood Horse that year. The paper at the time, while generally a broad discussion about the origins of the equine breed, did raise some questions about our... Read More...

Written by Byron Rogers | May 21, 2019 | 0 Comments

Inbreeding and Relatedness Coefficients extended to 10 generations

Monday, February 04, 2019 11:29 AM

This morning you may see that we have extended the computations of the Coefficient of Inbreeding and Coefficient of Relatedness to 10 generations. These coefficients were previously calculated over 8 and 6 generations respectively and were done to that generation previously due to computational restrictions, i.e, the speed of the computers and the frequency of... Read More...

Written by Byron Rogers | Feb 04, 2019 | 0 Comments

The Disappearance of Dosage

Monday, December 10, 2018 9:14 AM

A couple of weeks ago the manager of a TrueNicks enrolled stallion called to tell us that a hypothetical mating had generated Dosage Figures that were all zeroes – zeroes for each category in the Dosage Profile; a Dosage Index of zero; and a Center of Distribution of zero. A check confirmed that this was not an error, and nor was it the result of an obscure pedigree... Read More...

Written by Byron Rogers | Dec 10, 2018 | 0 Comments

mtDNA and Tregonwell's Natural Barb

Monday, October 20, 2014 1:48 PM

A year or so ago another company that I am associated with, Performance Genetics, did a private study on mitochondrial DNA, the strand of DNA that is maternally inherited in all species and can be used to classify female lineages. We were specifically looking into the #1 family of Tregonwell's Natural Barb which is now that of the likes of Black Caviar, Super... Read More...

Written by Byron Rogers | Oct 20, 2014 | 0 Comments

Oh, Brother! A Look at Full Brothers in Pedigrees

Friday, May 23, 2014 10:30 AM

Quite often in catalog pages you will see a nick where a full brother has been used in preference to another. We decided to take a look at the raw data and see what it says in practice. Is it in fact just a matter of names on the page, or is class really that important? There are a lot of circumstances where replacing full brothers in various positions is almost... Read More...

Written by Byron Rogers | May 23, 2014 | 11 Comments