Hildreth Romney tagging system

The system we have developed has several advantages over tagging at birth and DNA.


Ewes are single sire mated with all rams getting an equal proportion of two tooths and mixed age ewes. Also the rams get a similar number of progeny to do sire analysis. (At least 100 progeny per ram).

Quality Control

Although time consuming for us we process 300 lambs a day, it gives us a real grip on quality control. In fact along with increasing scale, the quality of our animals has improved dramatically.


Lambs are tagged at three weeks of age. We mother up each ewe and her lambs so we get to see the ewe and her progeny. Consequently we make individual comments. This can’t be done at birth or with DNA.


We use ram harnesses to see first hand the activity of the rams.


Current Research

  • 1

    Which ewes are weaning the heaviest lambs at weaning relative to their live weight.

  • 2
    Condition Score

    How condition score and live weight effects survival and weaning weight.

  • 3

    How pre-mating and post mating live weights affect scanning.

  • 4
    Weight Gain

    How weight gain pre-mating and during mating affects scanning.

  • 5
    Minimise Losses

    How to minimise losses between mating and docking.

  • 6

    We are using all the latest technology.

  • 7

    How ewe hogget mating affects longevity.


Ewe Efficiency - Scanning & Weighing Ewes.

A stick reader to read the EID tags at Scanning. Through the incredible ease of the EID system we have developed, we can not only collect more data, but more efficiently and accurately.

With the EID we now weigh all the ewes pre-mating, post-mating and at weaning. Ewes are condition scored at docking.

There is now ten years of very valuable data giving us a clear picture of ewe efficiency.

Quality Control

We have really focused on maintaining the structural soundness of all our animals.

All rams are checked for sound feet, teeth, face cover, black spots and any other undesirable fault prior to ram selling. With our scale the quality of the animals has significantly improved for any fault is culled. Out of 3000 stud ewes, only 15 ewes were culled for unsatisfactory feet (0.5%).