Hou Liangzhong, Duan Pingping, Yang Yuxia, Shah Ali Mujtaba, Li Jinlong, Xu Congbin, Guo Tongjun
Feed Research Institute of Xinjiang Academy of Animal Husbandry Sciences, Urumqi, China.
College of Animal Science and Technology, Northwest A&F University, Xianyang, China.
Front Vet Sci. 2025 Jan 10;11:1528126. doi: 10.3389/fvets.2024.1528126. eCollection 2024.
The residual black wolfberry fruit (RBWF) is rich in nutrients and contains a diverse range of active substances, which may offer a viable alternative to antibiotics. This experiment was conducted to investigate the impact of varying levels of RBWF on the growth performance and rumen microorganisms of fattening sheep, and to quantify its economic benefits.
In this experiment, 40 three-month-old and male Duolang sheep with an average weight of 29.85 kg, selected for their propensity to gain weight, were randomly assigned to one of four groups, with ten sheep in each group. To this end, each group was fed with a different proportion of RBWF (0%, 2%, 5%, 8%), and rumen fluid samples were collected to detect differences in fermentation parameters and microbial structure.
The findings indicate that the dry matter intake, OM and NDF apparent digestibility of Duolang sheep in the H2 group were found to be significantly higher than those observed in the other groups (P < 0.05). The concentration of volatile fatty acids (VFAs), including acetate, propionate, iso-butyrate, butyrate and iso-valerate, in rumen fluid demonstrated a linear increase with the supplementation of RBWF in the diet (P < 0.05). The dominant bacteria in the rumen of Duolang sheep were identified as Prevotella, Christensenellaceae R7 group, NK4A214 group, Ruminococcus, and Rikenellaceae RC9 gut group. Compared with the CK group, the relative abundance of Prevotella, NK4A214 group, unclassified Prevotellaceae and Lachnospiraceae NK3A20 group in the rumen of sheep in each experimental group increased to varying degrees. The gross profit of the H2 group was significantly higher than that of the other groups.
In conclusion, the supplementation of RBWF has been demonstrated to enhance the growth performance of Duolang sheep, optimise rumen fermentation parameters, and ultimately increase gross profit, of which 5 % is the best.
黑枸杞残果富含营养成分，含有多种活性物质，有望成为抗生素的可行替代品。本试验旨在研究不同水平的黑枸杞残果对育肥绵羊生长性能和瘤胃微生物的影响，并量化其经济效益。
本试验选取40只3月龄、平均体重29.85 kg、增重性能较好的雄性多浪羊，随机分为4组，每组10只。为此，每组饲喂不同比例的黑枸杞残果（0%、2%、5%、8%），并采集瘤胃液样本，检测发酵参数和微生物结构的差异。
结果表明，H2组多浪羊的干物质采食量、有机物和中性洗涤纤维表观消化率显著高于其他组（P<0.05）。瘤胃液中挥发性脂肪酸（VFA），包括乙酸、丙酸、异丁酸、丁酸和异戊酸的浓度随日粮中黑枸杞残果添加量的增加呈线性增加（P<0.05）。多浪羊瘤胃中的优势菌为普雷沃氏菌属、克里斯滕森菌科R7组、NK4A214组、瘤胃球菌属和理研菌科RC9肠道组。与CK组相比，各试验组绵羊瘤胃中普雷沃氏菌属、NK4A214组、未分类普雷沃氏菌科和毛螺菌科NK3A20组的相对丰度均有不同程度增加。H2组的总利润显著高于其他组。
综上所述，添加黑枸杞残果可提高多浪羊的生长性能，优化瘤胃发酵参数，最终提高总利润，其中5%添加量效果最佳。
