Department of Animal Nutrition, Bangladesh Agricultural University, Mymensingh2202, Bangladesh.
Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Dookie Campus, Victoria3647, Australia.
Animal. 2020 Nov;14(11):2433-2441. doi: 10.1017/S1751731120001196. Epub 2020 Jun 5.
There is a wide range of feed additives deliberately designed to be used in sheep diets that can improve production performance. Whereas herbal supplementation is gaining popularity not only for improving sheep productivity and mutton quality but also for safe application without any harmful residual effects. The present study was designed to investigate the effect of plantain (Plantago lanceolata L.) and/or garlic leaf (Allium sativum) dietary supplementation on growth performance, immunity, rumen histology, serum antioxidants and meat quality of sheep. The experiment consisted of a completely randomized design with 32 one-year-old sheep (initial mean live weight 9 ± 0.2 kg) allocated to four groups (8 sheep per group). Rice straw and concentrates-based total mixed ration pellets (2390 kcal/kg DM, CP = 15.1%) were offered as a control diet (CL diet). Herbal treatment diets included (i) CL diet + 10 g DM of plantain herb (PL diet), (ii) CL diet + 10 g DM of garlic leaf (GL diet) and (iii) CL diet + 5 g DM of PL and 5 g DM of GL (PG diet). Compared with the CL diet group, the live weight gain and feed conversion ratio were 18% to 26% and 13% to 20% higher in herbal-supplemented groups, respectively. Moreover, the herbal-supplemented groups, especially the PL diet group had higher serum immunoglobulin concentration, antioxidant capacity and rumen papillae size compared to the control. Besides, the lowest caul fat and pelvic fat levels were observed in the PL diet group followed by PG, GL and CL diet groups. In addition, lower mutton ether extract and saturated fatty acid along with higher polyunsaturated fatty acid levels were found in all herbal-supplemented groups. In conclusion, dietary supplementation with PL and/or GL might be used as an alternative in sheep to promote growth, health status and lean mutton production.
有广泛的饲料添加剂故意设计用于绵羊的饮食，可以提高生产性能。而草药补充剂不仅越来越受欢迎，提高绵羊的生产力和羊肉质量，而且安全应用，没有任何有害的残留影响。本研究旨在研究车前草（Plantago lanceolata L.）和/或大蒜叶（Allium sativum）日粮添加对绵羊生长性能、免疫力、瘤胃组织学、血清抗氧化剂和肉质的影响。该试验采用完全随机设计，32 只一岁龄绵羊（初始平均活重 9±0.2kg）分为 4 组（每组 8 只）。稻草和浓缩物基全混合日粮颗粒（2390kcal/kgDM，CP=15.1%）作为对照日粮（CL 日粮）。草药处理日粮包括：（i）CL 日粮+10gDM 车前草（PL 日粮），（ii）CL 日粮+10gDM 大蒜叶（GL 日粮）和（iii）CL 日粮+5gDM PL 和 5gDM GL（PG 日粮）。与 CL 日粮组相比，草本补充组的活重增重和饲料转化率分别提高了 18%至 26%和 13%至 20%。此外，与对照组相比，草本补充组，尤其是 PL 日粮组的血清免疫球蛋白浓度、抗氧化能力和瘤胃乳头尺寸更高。此外，PL 日粮组的背脂和盆腔脂肪含量最低，其次是 PG、GL 和 CL 日粮组。此外，所有添加草本的组的羊肉乙醚提取物和饱和脂肪酸含量较低，多不饱和脂肪酸含量较高。总之，日粮中添加 PL 和/或 GL 可作为绵羊的替代品，促进生长、健康状况和瘦肉羊肉生产。
