The Macquarie Sire Evaluation site is currently located at the Trangie Agricultural Research Centre (TARC), which is located 7 kilometres north west of Trangie in Central West NSW.
Trangie Agricultural Research Centre comprises 3900 ha of mixed red and grey soils in the heart of the Macquarie Valley. About 2800 ha are grazed as native pasture, with 800ha managed for dry land cropping in rotation with lucerne pastures, and 300ha developed for flood irrigation. The balance of 290ha is occupied by roads, buildings etc. The property has a livestock carrying capacity of 12,000 dry sheep equivalents and is the largest research station operated by the Department of Primary Industries.
TARC is located in a non-seasonal rainfall region. The climate in Trangie is warm and temperate and the annual rainfall is 544 mm.
The ewe base involved in the 2022 drop at the Trangie site are sourced from the NSW DPI commercial flock at TARC, based on a Currawarra bloodline.
The ewe base joined for the 2017 and 2018 MLP drops were commercial ewes from the Central West region with one representing a bloodline selected for increased wool production and body size; and the other representing a dual purpose bloodline, where selection aimed to improve wool, fertility and growth traits.