A key element in the performance recording of sheep through the Signet Sheepbreeder Service is the collection of accurate measurements of muscle and fat using ultrasound scanning machines.
The animal needs to be restrained, ideally in a neck restrainer allowing the animal to stand naturally.
The scanning technique involves parting the wool at the third lumbar vertebra at 90 degrees to the backbone and then applying liquid paraffin oil to give contact.
The transducer is placed on the prepared site and adjusted until a clear image of the third lumbar transverse process, the eye muscle, and the fat layers can be seen on the machine’s screen.
The picture is then frozen and linear measurements of muscle and fat depths taken on the screen using a cursor.
Further information relating to ultrasound scanning can be found in our fact sheet Ultrasound Scanning
In this section
- Technical Information
- Why is Genetic Improvement Important?
- Selecting the Right Ram
- Estimated Breeding Values
- Interpreting Estimated Breeding Values
- Breeding Indexes
- Accuracy Values
- Ultrasound Scanning
- Computed Tomography (CT) Scanning
- Ram Buying Tips
- Performance Recording your Pedigree flock
- Electronic Data Transfer
- Downloading EBV's from the Internet
- Inbreeding - How to Manage it
- Inbreeding - Publications and Resources
- Recessive Inherited Diseases
- On-line Training Package
- Filling in your Ram Sale Cards
- Marketing Breeding Sheep for Better Returns
- Breeding Fit for Purpose Rams - a Blueprint for Breeders
- Print EBV Sale Charts Online
- Recording Lambing Ease and Birth Weight