Marine microalgae of the genus Schizochytrium can be used in the diet of sheep a source of protein and energy and changing meat composition essentially due to its high content in docosahexaenoic acid (DHA). The objective was to evaluate the best inclusion level of marine microalgae meal in the lamb diet on the performance, carcass traits and meat quality. A total of thirty-two uncastrated Ile de France lambs with an initial average body weight (BW) of 20 ± 0.2 kg were distributed in a completely randomized design with eight replicates and four treatments [marine microalgae meal inclusion at 0 (control), 2; 4 and 6% in dry matte (DM)]. Marine microalgae meal inclusion in the diets of lambs reduced (P ≤0.05) DM intake, average daily gain, ruminal papilla height and width, meat cholesterol, C18:0, C18:1n–9, C18:2n–6, ΣMUFA:ΣSFA ratio, Σn–6 and Δ9–desaturase-C16 activity of longissimus muscle. However, the marine microalgae meal increased (P ≤0.05) the feeding conversion, liver weight, meat lipid oxidation, C16:0, C17:0, C18:1n–7, 18:2 c9-t11 (CLA), C20:5n–3 (EPA) and C20:6n–3 (DHA), ΣPUFA, Σn–3, atherogenicity (AI) and thrombogenicity (TI) index, ΣHypercholesterolemic (H) FA and ΣPUFA:ΣSFA ratio. The carcass weight and yield, most of the variables of physicochemical composition and other FAs were not affected (P >0.05) by marine microalgae meal inclusion in the diet. The marine microalgae meal inclusion up to 6% level in Ille de France lambs’ diet was not efficient because it reduced the DMI, performance and feeding efficiency of the animals and it worsen lipid oxidation and healthy meat compounds AI, TI and h:H indexes. However, regarding meat fat quality, the microalgae inclusion confirmed the hypothesis of improving EPA, DHA, Σn–3 and CLA concentrations and reducing meat total cholesterol.

裂殖壶菌属海洋微藻可用于绵羊饲料中，是蛋白质和能量的来源，并且由于其二十二碳六烯酸（DHA）含量高，因此可以改变肉的成分。目的是评估羔羊日粮中海洋微藻粉的最佳含量，以提高其性能，car体性状和肉质。在完全随机的设计中，总共分配了32只未cast割的法兰西岛小羊，其初始平均体重（BW）为20，重复羊羔有8次重复和4种处理[在0（对照），2 ; 干哑光（DM）中分别为4和6％]。羔羊日粮中海洋微藻粉含量降低（P≤0.05）DM摄入量，平均日增重，瘤胃乳头高和宽，肉类胆固醇，C18：0，C18：1n–9，C18：2n–6，ΣMUFA：ΣSFA比，Σn–6和Δ9–desaturase-C16活性的最长肌。然而，海洋微藻餐增加（P ≤0.05）馈送转换，肝重，肉脂质氧化，C16：0，C17：0，C18：1N-7，18：2 Ç 9-吨11（CLA），C20 ：5n-3（EPA）和C20：6n-3（DHA），ΣPUFA，Σn-3，动脉粥样硬化性（AI）和血栓形成性（TI）指数，Σ高胆固醇（H）FA和ΣPUFA：ΣSFA比。car体重量和产量，大部分理化组成变量和其他脂肪酸不受影响（P> 0.05）通过在饮食中添加海洋微藻粉来实现。法兰西岛羔羊的日粮中将海洋微藻粉含量提高到6％的方法是无效的，因为它降低了动物的DMI，性能和喂养效率，并且恶化了脂质氧化和健康的肉类化合物AI，TI和h：H指数。但是，关于肉类脂肪的质量，微藻包含物证实了提高EPA，DHA，Σn-3和CLA浓度并降低肉类总胆固醇的假设。