Tools


Create a Pedigree Chart

2 June 2013

A pedigree creation tool has been developed.

The tool demonstrates new automated features such as interactive or live-search for recorded animals, display of basic animal information over mutiple generations, and creation of a six-generation pedigree.

...More


Ready Reckoners

26 October 2012

A number of simple tools have been developed which enable

...More


Breeding Value and $Index Chart

Solving the mystery of Breedplan Accuracy Figures

4 June 2012

Breedplan estimated breeding value (EBV) accuracies exaggerate the true accuracy of EBVs, and dollar indexes ($Indexes), which are derived from EBVs, are published with no indication of accuracy.

The challenge of determining the true accuracy of EBVs and $Indexes, and hence the degree of confidence stud breeders and their clients can place in them, became more difficult following a decision last year not to distribute the annual Sire Summary to Limousin breeders. The annual Sire Summary was the only up-to-date source of information that identified the relationship between EBV accuracy figures and prediction error margins.

Fortunately, the time-consuming and commonly overlooked task of determining the true accuracy of EBVs and $Indexes has now been automated. Users of the breeding value and $Index chart creator described here will note that error margins arising from prediction uncertainties do not reduce significantly until EBV accuracies exceed 95%. EBVs with accuracies below 95% are often imprecise indicators of true breeding values and $Indexes, and should thus be used with extreme caution. ...More


Post a comment, question, or suggest a topic.

Click here.

Comments, questions and suggestions are moderated and will be published as soon as they have been approved. When posting you agree to be bound by our Terms and Conditions.