Diao Xiaogao, Zhang Xuanzi, Hao Xiaoyan, Mu Chuntang, Zhang Jianxin
Sanya Institute of China Agricultural University, Sanya, Hainan, China.
College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China.
Front Vet Sci. 2025 Apr 24;12:1560976. doi: 10.3389/fvets.2025.1560976. eCollection 2025.
Sea buckthorn pomace (SBP), a by-product derived from sea buckthorn fruit, is rich in nutrients and contains multiple pharmacologically active compounds. Consequently, SBP has the potential to serve as an alternative feed source for ruminants. This study aimed to evaluate the effects of SBP supplementation on organ weight, rumen development, intramuscular fatty acid composition, and antioxidant capacity in weaned lambs. Forty weaned Duper × Small-tailed Han lambs were randomly assigned to one of four dietary treatments in a completely randomized design. The experimental diets included 0% SBP (control), 8% SBP, 16% SBP, and 24% SBP, which were administered over an 80-day period. The results revealed that organ weight increased linearly with SBP supplementation, with the 16% SBP group demonstrating the highest weight gain ( < 0.05). Rumen and small intestine deposition exhibited a quadratic response, while omental fat accumulation was significantly greater in the SBP-supplemented groups compared to the control ( = 0.01). Additionally, rumen papilla length, width, and keratin layer thickness were positively influenced by SBP supplementation ( = 0.01). In rumen fluid, acetate, propionate, total volatile fatty acids, and acetate/propionate ratio showed a linear increase with SBP supplementation, whereas rumen pH displayed an inverse trend ( < 0.05). Marbling in longissimus dorsi improved in the SBP group along with enhanced meat quality parameters such as saturated fatty acid (TSFA), total monounsaturated fatty acid (TMUFA), and total polyunsaturated fatty acids (TPUFA), indicating that meat from lambs fed with 16% SBP was more tender and of better quality ( < 0.05). Furthermore, SBP also increased the antioxidant capacity of muscle tissue ( < 0.05). The above results indicate that adding SBP at a level of 16% in weaned lambs' diets can enhance organ weight, promote ruminal development, improve meat quality, and provide antioxidant benefits. SBP can be included at up to 24% in weaned lambs' diets without negative effects.
沙棘果渣（SBP）是沙棘果实的一种副产品，富含营养成分且含有多种药理活性化合物。因此，SBP有潜力作为反刍动物的替代饲料来源。本研究旨在评估添加SBP对断奶羔羊器官重量、瘤胃发育、肌肉脂肪酸组成和抗氧化能力的影响。40只断奶的杜泊×小尾寒羊羔羊被完全随机分配到四种日粮处理组之一。实验日粮包括0% SBP（对照组）、8% SBP、16% SBP和24% SBP，在80天的时间内投喂。结果显示，随着SBP添加量的增加，器官重量呈线性增加，16% SBP组增重最高（P<0.05）。瘤胃和小肠沉积呈现二次反应，而与对照组相比，添加SBP组的网膜脂肪积累显著更多（P=0.01）。此外，添加SBP对瘤胃乳头长度、宽度和角质层厚度有积极影响（P=0.01）。在瘤胃液中，乙酸、丙酸、总挥发性脂肪酸和乙酸/丙酸比值随着SBP添加量的增加呈线性增加，而瘤胃pH呈相反趋势（P<0.05）。SBP组背最长肌的大理石花纹得到改善，同时肉质参数如饱和脂肪酸（TSFA）、总单不饱和脂肪酸（TMUFA）和总多不饱和脂肪酸（TPUFA）也有所提高，表明饲喂16% SBP的羔羊的肉更嫩且品质更好（P<0.05）。此外，SBP还提高了肌肉组织的抗氧化能力（P<0.05）。上述结果表明，在断奶羔羊日粮中添加16%的SBP可以增加器官重量、促进瘤胃发育、改善肉质并提供抗氧化益处。断奶羔羊日粮中SBP的添加量可高达24%而无负面影响。
