Some people say that if merinos have great eye muscle and fat carcass traits then their wool will deteriorate quite rapidly in cut and quality as they age. I don't see this in our flock where we have been selecting for carcass traits as well as wool cut for decades.
Yesterday we started shearing and this ewe came through in the first mob. She is 9 1/2 years old, still maintaining condition in the paddock at our high stocking rates, as well as cutting 4.5kg of stylish white fleece. And still having lambs.
Robust, productive, easy care and fertile.