Seasonal wool growth and staple strength were measured in mature, non-pregnant Romney ewes individually penned indoors or confined as a group in a yard outdoors and offered a maintenance ration of lucerne chaff. Clean wool growth was lowest during winter (4.6 and 5.0 g/d for indoor and outdoor ewes, respectively) and greatest during summer for indoor (11.3 g/d) or spring for outdoor (11.9 g/d) ewes. Efficiency of wool growth (g wool growth/d per kg dry matter intake/d) for indoor sheep was 5.6, 8.8, 11.8 and 7.8 during winter, spring, summer and autumn, respectively. There were positive relationships between mean wool growth, staple strength and efficiency.

DB, Pownall, RJ Lucas, and M Abrahamson

Proceedings of the New Zealand Society of Animal Production, Volume 44, , 49-52, 1984
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