Ahmed Mariam G, Al-Sagheer Adham A, El-Waziry Ahmed M, El-Zarkouny Samir Z, Elwakeel Eman A
Department of Animal and Fish Production, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt.
Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
Animals (Basel). 2023 May 4;13(9):1543. doi: 10.3390/ani13091543.
This study investigated the effect of co-ensiling increasing levels of artichoke bracts ( L.) with berseem ( L.) (100:0, 75:25, 50:50, 25:75, and 0:100, respectively) on silage quality after 0, 30, 60, and 120 days. Moreover, the in vitro rumen fermentation characteristics and methane (CH) and ammonia (NH-N) production were evaluated using a buffalo inoculum source. The results showed that pH of the silage and the concentration of acetic, propionic, butyric acid, and NH-N significantly decreased (L; < 0.01) with the increasing amounts of artichoke bracts in the mixture. At 30 and 60 days of ensiling, the highest lactic acid concentration was observed at intermediate proportions of artichoke bracts ( < 0.01). Cumulative gas production was higher in artichoke bracts than in the berseem silage. After 24 h of incubation, the highest value ( < 0.05) of truly dry matter, organic matter, natural detergent fiber degradability, and NH-N concentration was recorded with 500 g/kg of forage mixtures. As the artichoke bract concentration increased, the partitioning factor and ruminal pH declined linearly ( ≤ 0.05). No significant differences were observed for total volatile fatty acids and volatile fatty acids molar proportions. In summary, co-ensiling artichoke bracts with berseem at a ratio of 1:1 might be a promising and easy method for the production of high-quality silage from legume forage with positively manipulating rumen fermentation.
本研究调查了将不同比例（分别为100:0、75:25、50:50、25:75和0:100）的朝鲜蓟苞片与埃及三叶草共同青贮0、30、60和120天后对青贮饲料质量的影响。此外，使用水牛瘤胃液接种物评估了体外瘤胃发酵特性以及甲烷（CH）和氨（NH-N）的产生。结果表明，随着混合物中朝鲜蓟苞片含量的增加，青贮饲料的pH值以及乙酸、丙酸、丁酸和NH-N的浓度显著降低（P<0.01）。在青贮30天和60天时，朝鲜蓟苞片比例处于中间水平时乳酸浓度最高（P<0.01）。朝鲜蓟苞片青贮饲料的累积产气量高于埃及三叶草青贮饲料。培养24小时后，500 g/kg的饲料混合物的真干物质、有机物、天然洗涤纤维降解率和NH-N浓度达到最高值（P<0.05）。随着朝鲜蓟苞片浓度的增加，分配系数和瘤胃pH值呈线性下降（P≤0.05）。总挥发性脂肪酸和挥发性脂肪酸摩尔比例未观察到显著差异。总之，以1:1的比例将朝鲜蓟苞片与埃及三叶草共同青贮可能是一种有前景且简便的方法，可用于从豆科牧草生产高质量青贮饲料，并对瘤胃发酵产生积极影响。
