This study estimated the net macro and micromineral requirement from the 48 male uncastrated lambs (24 growing male Santa Inês and 24 growing male Morada Nova hair sheep), with initial weights of 21.7 ± 1.2 kg and 20.8 ± 0.8 kg using the comparative slaughter method. The experimental diet consisted of 30% forage (Buffel—Cenchrus ciliaris (L) hay) and 70% concentrate (corn grain 43.5%, soybean meal 22.0%, vegetable oil 3.0% and mineral supplement 1.5%). The experimental design was a completely randomized with two breeds, four weights, and six replicate. Mineral requirements sufficient to promote weight gain in Santa Inês sheep ranged from 1.75 to 1.03 g Ca, 1.01 to 0.61 g of P, 0.38 to 0.21 g of K, 0.38 to 0.16 of Na, 0.10 to 0.06 Mg, 28.5 to 16.0 mg of Fe, 6.14 to 3.22 mg of Cu, and Zn 23.0 to 14.0 mg/kg per unit of empty body weight (EBW) gain. In the Morada Nova breed, the requirements ranged from 1.96 to 0.84 g of Ca, 1.15 to 0.46 of P, 0.39 to 0.19 of K, 0.28 to 0.13 of Na, 0.10 to 0.05 Mg, 26.2 to 12.9 mg of Fe, 5.59 to 2.46 Cu, and Zn 23.6 to 10.3 mg/kg of EBW gain. Mineral requirements varied mainly in accordance with the proportion of bone mass and fat concentration in the carcass, which were influenced by the slaughter weight of the animals, and therefore should be used in the formulation of dietary mineral supplements.

中文翻译：

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生长中的雄性 Santa Inês 和 Morada Nova 毛羊体重增加的矿物质需求

本研究使用比较屠宰法估算了 48 只雄性未阉割羔羊（24 只生长中的雄性 Santa Inês 和 24 只生长中的雄性 Morada Nova 毛绵羊）的常量和微量元素净需求量，初始重量分别为 21.7 ± 1.2 kg 和 20.8 ± 0.8 kg。实验日粮由 30% 的草料（Buffel— Cenchrus ciliaris(L) 干草）和 70% 浓缩物（玉米粒 43.5%、豆粕 22.0%、植物油 3.0% 和矿物质补充剂 1.5%）。实验设计是完全随机的，有两个品种、四个权重和六个重复。足以促进 Santa Inês 绵羊体重增加的矿物质需求范围为 1.75 至 1.03 克钙、1.01 至 0.61 克磷、0.38 至 0.21 克钾、0.38 至 0.16 钠、0.10 至 0.06 毫克、28.5 至 16.0 毫克铁, 6.14 至 3.22 毫克铜和锌 23.0 至 14.0 毫克/千克每单位空重 (EBW) 增加。在 Morada Nova 品种中，需求范围为 1.96 至 0.84 克钙、1.15 至 0.46 磷、0.39 至 0.19 钾、0.28 至 0.13 钠、0.10 至 0.05 毫克、26.2 至 12.9 毫克铁、5.59 至 2.46 Cu 和 Zn 23.6 至 10.3 mg/kg EBW 增益。