Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
Faculty of Sustainable Agriculture, Universiti Malaysia Sabah, 90000, Sandakan, Sabah, Malaysia.
Trop Anim Health Prod. 2023 Nov 10;55(6):402. doi: 10.1007/s11250-023-03817-8.
This study aimed to evaluate the effect of feeding P. pulmonarius-treated empty fruit bunch (FTEFB) on the nutrient intakes, digestibility, milk yield and milk profiles of lactating Saanen goats. A total of nine lactating Saanen goats were used in an incomplete cross-over experimental design. The balanced dietary treatments contain different replacement levels of Napier grass with FTEFB at 0% (0-FT), 25% (25-FT) and 50% (50-FT). The FTEFB contained crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) at 4.10, 94.6, 70.8 and 19.4% DM, respectively. The replacement of FTEFB in 25-FT did not alter dry matter, NDF, hemicellulose, ADL, ether extract and gross energy intakes when compared to the control fed group (0-FT). The ADF and cellulose intake was higher in 25-FT than in the others (P < 0.001). The digestibility of hemicellulose, cellulose and ADL were not changed in 25-FT compared to the control group (P < 0.05) whereas when 50% FTEFB was incorporated to the diet, intermediate digestibility was decreased significantly (P < 0.05). Milk yield and protein content did not differ between the goat received 25-FT and the control group (P > 0.05). There are no differences in milk fatty profiles between dietary treatments (P > 0.05), except for OCFA. Goat fed with 25-FT had the lowest OCFA (P < 0.01) and significantly reduced the lauric acid concentration (P < 0 .05) when compared to the control group. Thus, replacement of NG in 25-FT does not adversely affect nutrient intake, fibre digestibility (cellulose and hemicellulose), milk yield, milk composition and milk fatty acid profiles. Overall, FTEFB may have potential to be used in the dairy goat diet as a roughage source to replace Napier grass.
本研究旨在评估投喂蒲桃叶处理后的桔秆（FTEFB）对泌乳萨能奶山羊的养分摄入、消化率、产奶量和乳成分的影响。总共使用了 9 只泌乳萨能奶山羊进行不完全交叉实验设计。平衡的饮食处理含有不同水平的替代物，即用 FTEFB 替代象草，替代水平分别为 0%（0-FT）、25%（25-FT）和 50%（50-FT）。FTEFB 的粗蛋白（CP）、中性洗涤剂纤维（NDF）、酸性洗涤剂纤维（ADF）和酸性洗涤剂木质素（ADL）含量分别为 4.10%、94.6%、70.8%和 19.4%DM。与对照组（0-FT）相比，25-FT 中的 FTEFB 替代物并没有改变干物质、NDF、半纤维素、ADL、乙醚提取物和总能的摄入量。与其他组相比，25-FT 组的 ADF 和纤维素摄入量更高（P<0.001）。与对照组相比，25-FT 组的半纤维素、纤维素和 ADL 消化率没有变化（P<0.05），而当 50%的 FTEFB 被纳入饮食时，中间消化率显著降低（P<0.05）。接受 25-FT 的山羊与对照组的产奶量和蛋白质含量没有差异（P>0.05）。日粮处理之间的乳脂脂肪酸谱没有差异（P>0.05），除了 OCFA。与对照组相比，投喂 25-FT 的山羊的 OCFA 最低（P<0.01），月桂酸浓度显著降低（P<0.05）。因此，在 25-FT 中用 NG 替代不会对养分摄入、纤维消化率（纤维素和半纤维素）、产奶量、乳成分和乳脂肪酸谱产生不利影响。总的来说，FTEFB 可能有潜力作为一种粗饲料来源，在奶山羊日粮中替代象草。
