College of Veterinary Medicine and Animal Science, Federal University of Mato Grosso do Sul, Campo Grande, Brazil.
Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal do Mato Grosso do Sul, Av. Filinto Müller, 2443, Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
Trop Anim Health Prod. 2021 Feb 13;53(1):162. doi: 10.1007/s11250-021-02615-4.
We evaluated the lipid level effects in the diet on performance, carcass, and meat characteristics of forty-eight steers and heifers, F1 Beefalo (Bostaurus taurus × Bison bison hybrid) × Nellore (Bos taurus indicus), 22 months old, being 24 steers (393.2 ± 15 kg) and 24 heifers (278.4 ± 8 kg). The animals were distributed in a completely randomized design in a 4 × 2 factorial scheme (lipid levels in diet 55-, 65-, 75-, and 85-g/kg dry matter obtained by whole sunflower grain Helianthus annuus and two sexes). Increased amounts of sunflower grain in diet linearly reduce the proportion of saturated fatty acids (FA) in longissimus thoracis. Diets containing up to 85 g/kg of lipid can be used without negative effects on intake, carcass, and meat quality of Beefalo-Nellore steers and heifers and can be an effective strategy to reduce the proportion of saturated FA and increase unsaturated FA on the meat, which can be beneficial for human consumption.
我们评估了饮食中脂肪水平对 48 头 F1 野牛（牛 × 野牛杂交）× 内罗尔牛（印度野牛）公牛和母牛的性能、胴体和肉质特性的影响，这些牛为 22 月龄，其中有 24 头公牛（393.2 ± 15 千克）和 24 头母牛（278.4 ± 8 千克）。这些动物采用完全随机设计，在 4×2 析因设计方案（日粮中脂肪水平为 55、65、75 和 85 克/千克干物质，通过全向日葵籽粒 Helianthus annuus 和两种性别获得）中进行分配。日粮中向日葵籽粒含量的增加会使胸腰椎肉中饱和脂肪酸（FA）的比例线性降低。日粮中含有高达 85 克/千克的脂肪不会对 Beefalo-Nellore 公牛和母牛的采食量、胴体和肉质产生负面影响，并且可以作为一种有效策略来降低肉中的饱和 FA 比例，增加不饱和 FA，这对人类消费可能是有益的。
