Tips, Tools and Techniques

This page is a collection of tips, tools and techniques used in Merino Sire Evaluation. For assistance with other trial activities please contact us.

DNA Sampling

The document below is a Standard Operating Procedure (SOP) for collecting DNA by taking a TSU (Tissue Sampling Unit) using a Tru-Test XR5000 and 2D scanner as the data recorders.

Video tutorials are available via links in the document and to the right.

AMSEA Classing & Trait Scoring

Visual classing in Merino Sire Evaluation and the MLP project involves scoring of individual wool quality and conformation traits according to the Visual Sheep Scores publication. Each sheep is then given an overall classing grade as either a Top, Flock or Cull.

Further information:
Visual Classing, Section 2, Merino Sire Evaluation Requirements.

North East Victoria’s site undertaking AMSEA classing, February 2019.

Overview Video

Mitch Crosby can be seen running through his classing sequence of an MLP ewe at the Pingelly site in November 2019. First he scores the visual traits for the individual animal and then gives an overall grade, in this instance a Flock. He will score these traits in this pattern for every ewe and the data is correspondingly recorded. The process becomes streamlined and consistent. Other sites and classers set their own pattern and trait order.

Using Tru-Test Technology

Many of the AMSEA sites use the Tru-Test technology and a collection of knowledge and information is becoming available.

Below are links to some Tru-Test tools and programs.


Also available are some Tru-Test favourites files, these are generously made available by Macquarie’s MLP Site Manager Dr Kathryn Egerton-Warburton from NSW DPI.

Consistency is Key

Merino Sire Evaluation has found it to be important to be consistent with all trial activities. That means doing every activity and managing all sheep in a consistent manner.

For example, to take the midside sample from the same location (over the third last rib halfway between the mid-line of the back and the mid-line of the belly) of every sheep.

Pingelly’s midside sampling team, November 2019.