Fleece & Genetics

Close up Alpaca in a Grass Field on a Farm 2026 03 16 22 55 05 Utc

Our approach

Fleece first, always

At Thistledown, fleece is the primary measure of every animal in the herd. We test annually, track results over time, and make breeding decisions based on data as much as observation. Fine fleece that holds its micron through multiple clips is the goal -- not impressive maiden numbers that coarsen by year three.

Portrait Alpaca Eating in a Grass Field on a Farm

Annual testing

How we measure

Every animal at Thistledown is tested annually by an accredited fleece testing laboratory. We record micron, standard deviation, comfort factor, staple length, and fleece weight at each clip. Results are kept on file and tracked year on year so we can see how each animal is performing over time and make informed breeding decisions.

Micron is the most commonly cited figure but it does not tell the whole story. Standard deviation matters -- a broad spread means inconsistent fibre diameter across the fleece, which affects handle and end-use quality. We breed for low standard deviation as well as fine micron.

We welcome enquiries for outside matings with Aurelius and Merrow, and occasionally have quality animals available.

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