Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
Department of Livestock and Pasture Science, Faculty of Science and Agriculture, University of Fort Hare, P. Bag X1314, Alice 5700, South Africa.
Meat Sci. 2019 Jan;147:6-12. doi: 10.1016/j.meatsci.2018.08.017. Epub 2018 Aug 28.
This study investigated the effects of feeding graded levels of sun-dried red grape pomace (GP; 0, 5, 10, 15 and 20%) on growth, carcass and meat physico-chemical quality attributes of Dohne Merino lambs for 42 days. Dry matter intake increased quadratically with a critical value (i.e., optimum inclusion level) of 11.3% GP (P ≤ 0.05). Diet exhibited similar quadratic responses for average daily gain, live, hot and cold carcass weights with optimum inclusion levels at 9.6, 9.7, 12, 2 and 12.1, respectively (P ≤ 0.05). Overall, meat quality traits were not negatively affected by GP inclusion (P > .05). Gross profit was influenced by diet, with an optimum inclusion level at 12.2% (quadratic; P ≤ 0.05). Overall, inclusion of 12.2% GP in lamb finishing diets at the expense of oat bran and wheat bran middlings improved lamb productivity, without compromising meat quality.
本研究旨在探讨在 42 天的育肥期内，给杜罗绵羊饲喂不同水平（0、5、10、15 和 20%）的晒干红葡萄渣对其生长性能、胴体和肉品质理化特性的影响。干物质采食量随葡萄渣添加量呈二次曲线增加，当葡萄渣添加量达到 11.3%时达到临界值（即最佳添加水平）（P≤0.05）。日粮对平均日增重、活重、热胴体重和冷胴体重也呈现相似的二次响应，最佳添加水平分别为 9.6%、9.7%、12%、2%和 12.1%（P≤0.05）。总体而言，葡萄渣的添加并未对肉品质产生负面影响（P＞0.05）。经济效益受日粮影响，最佳添加水平为 12.2%（二次曲线；P≤0.05）。总体而言，用 12.2%的葡萄渣替代燕麦麸和小麦麸代替日粮中的中等纤维，可提高绵羊的生产性能，而不会影响肉品质。
