Abstract Romerillo (Chiliotrichum diffusum) is an unpalatable and invasive shrub that reduces biodiversity and constraints livestock operations in the Magellan rangelands of southern Chile. Nutrient and energy inputs may enhance romerillo use by sheep, reducing its competitive capacity and restore biodiversity loss. In Exp. 1, 32 ewes were penned individually and randomly assigned to 4 groups (8 ewes/group), where they were supplemented with 1 (Group 1), 3 (Group 2), 5 (Group 3), or 7 g/Kg BW/d (Group 4) of canola meal, a high-crude protein (CP) supplement. Subsequently, all ewes had ad libitum amounts of freshly cut romerillo followed by 1% BW of grass hay. Intake of romerillo increased with the amount of canola meal offered up to 5 g/Kg BW (P 0.05), reflected in a negative quadratic relationship between romerillo and canola meal intake (P

中文翻译：

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蛋白质和能量的补充水平影响巴塔哥尼亚南部绵羊对 Romerillo (Chiliotrichum diffusum) 的摄取

摘要 Romerillo (Chiliotrichum diffusum) 是一种难吃的侵入性灌木，在智利南部的麦哲伦牧场减少了生物多样性并限制了畜牧业。营养和能量输入可能会增加绵羊对罗梅里洛的使用，降低其竞争能力并恢复生物多样性的丧失。在 Exp. 1、32 只母羊被单独圈养并随机分配到 4 组（8 只母羊/组），其中补充有 1（第 1 组）、3（第 2 组）、5（第 3 组）或 7 g/Kg BW/ d（第 4 组）菜籽粕，一种高粗蛋白 (CP) 补充剂。随后，所有的母羊都随意采食新鲜切割的 romerillo 和 1% BW 的干草。romerillo 的摄入量随着提供高达 5 g/Kg BW 的双低菜粕的量而增加（P = 0.05），反映在 romerillo 和双低菜粕摄入量之间呈负二次关系（P