Yang Lei, Tian Shijun, Luo Yongchang, Qiao Zhanhong, Chen Chao, Lv Xiaokang, Hua Jinling
College of Animal Science, Anhui Science and Technology University, Chuzhou 239000, China.
Anhui Province Key Laboratory of Animal Nutritional Regulation and Health, Chuzhou 233100, China.
Animals (Basel). 2025 Jul 25;15(15):2194. doi: 10.3390/ani15152194.
Glycerol fatty acid esters (GFAEs) are recognized for their potential to improve lipid metabolism, energy utilization, and gut health due to their excellent emulsifying and antimicrobial properties. The objective of this research was to investigate the effects of dietary GFAE supplementation on production performance, serum biochemical profiles, and rumen fermentation in beef cattle. Thirty crossbred Simmental bulls, averaging 507.42 ± 9.59 kg in body weight, were assigned to three distinct cohorts, with 10 animals in each cohort. The CON cohort was fed a basal diet devoid of GFAE, whereas the treatment cohorts (GFAE1 and GFAE2) received GFAE supplements at concentrations of 0.1% and 0.2% of the dietary dry matter, respectively. Compared with the control group, supplementation with 0.1% GFAE significantly increased the ADG of beef cattle by 12.14% ( < 0.05); compared with the GFAE2 group, ADG was 7.86% higher ( > 0.05). The digestibility of NDF and ADF was significantly enhanced in the GFAE1 group relative to the control group ( < 0.05). Dietary GFAE supplementation significantly elevated rumen acetate, propionate, and total volatile fatty acid concentrations in both the GFAE1 and GFAE2 groups compared to the control group ( < 0.05). In contrast to the control group, there was a notable rise in serum levels of T-AOC, UREA, and TG in both GFAE1 and GFAE2 groups ( < 0.05). Conversely, the concentration of HDL-C was significantly decreased in the GFAE2 group. Additionally, at the phylum level, the abundance of Fibrobacterota was significantly higher in the GFAE1 group than in the control group ( < 0.01). At the genus level, the proportions of and were significantly higher in the GFAE1 group compared to the control group ( < 0.05). In conclusion, this study demonstrates that the addition of 0.1% GFAE to beef cattle diets significantly enhances the digestibility of ADF and NDF nutrients, increases serum total antioxidant capacity, urea, and triglycerides, optimizes rumen fermentation parameters and microbial community structure, and ultimately improves production performance. As a result of the findings from this research, it is suggested that 0.1% GFAE be incorporated into the diet for beef cattle.
甘油脂肪酸酯（GFAEs）因其出色的乳化和抗菌特性，在改善脂质代谢、能量利用和肠道健康方面的潜力而受到认可。本研究的目的是调查日粮中添加GFAE对肉牛生产性能、血清生化指标和瘤胃发酵的影响。30头西门塔尔杂交公牛，平均体重507.42±9.59千克，被分为三个不同的组，每组10头。对照组饲喂不含GFAE的基础日粮，而处理组（GFAE1和GFAE2）分别以日粮干物质的0.1%和0.2%的浓度添加GFAE。与对照组相比，添加0.1%GFAE显著提高了肉牛的平均日增重（ADG）12.14%（P<0.05）；与GFAE2组相比，ADG高7.86%（P>0.05）。相对于对照组，GFAE1组的中性洗涤纤维（NDF）和酸性洗涤纤维（ADF）消化率显著提高（P<0.05）。与对照组相比，日粮中添加GFAE显著提高了GFAE1和GFAE2组瘤胃乙酸、丙酸和总挥发性脂肪酸的浓度（P<0.05）。与对照组相比，GFAE1和GFAE2组血清总抗氧化能力（T-AOC）、尿素和甘油三酯（TG）水平均显著升高（P<0.05）。相反，GFAE2组高密度脂蛋白胆固醇（HDL-C）浓度显著降低。此外，在门水平上，GFAE1组纤维杆菌门的丰度显著高于对照组（P<0.01）。在属水平上，GFAE1组中[具体属1]和[具体属2]的比例显著高于对照组（P<0.05）。总之，本研究表明，在肉牛日粮中添加0.1%GFAE可显著提高ADF和NDF养分的消化率，提高血清总抗氧化能力、尿素和甘油三酯水平，优化瘤胃发酵参数和微生物群落结构，最终提高生产性能。基于本研究结果，建议在肉牛日粮中添加0.1%GFAE。
