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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