Hu Xiaodong, Hao Wei, Wang Huili, Ning Tingting, Zheng Mingli, Xu Chuncheng
Asian-Australas J Anim Sci. 2015 Apr;28(4):502-10. doi: 10.5713/ajas.14.0508.
The objective of this study was to assess the use of peach pomace in total mixed ration (TMR) silages and clarify the differences in aerobic stability between TMR and TMR silages caused by lactic acid bacteria (LAB). The TMR were prepared using peach pomace, alfalfa hay or Leymus chinensis hay, maize meal, soybean meal, cotton meal, limestone, a vitamin-mineral supplement, and salt in a ratio of 6.0:34.0:44.4:7.0:5.0:2.5:1.0:0.1 on a dry matter (DM) basis. Fermentation quality, microbial composition, and the predominant LAB were examined during ensiling and aerobic deterioration. The results indicated that the TMR silages with peach pomace were well fermented, with low pH and high lactic acid concentrations. The aerobic stability of TMR silages were significantly higher than that of TMR. Compared with TMR silages with alfalfa hay, TMR silage with Leymus chinensis hay was much more prone to deterioration. Although the dominant LAB were not identical in TMR, the same dominant species, Lactobacillus buchneri and Pediococcus acidilactici, were found in both types of TMR silages after 56 d of ensiling, and they may play an important role in the aerobic stability of TMR silages.
本研究的目的是评估桃渣在全混合日粮（TMR）青贮饲料中的应用，并阐明乳酸菌（LAB）导致的TMR和TMR青贮饲料在有氧稳定性方面的差异。TMR是以干物质（DM）为基础，按6.0:34.0:44.4:7.0:5.0:2.5:1.0:0.1的比例，使用桃渣、苜蓿干草或羊草、玉米粉、豆粕、棉粕、石灰石、维生素 - 矿物质预混料和盐制备而成。在青贮和有氧变质过程中检测发酵质量、微生物组成和主要的乳酸菌。结果表明，含有桃渣的TMR青贮饲料发酵良好，pH值低且乳酸浓度高。TMR青贮饲料的有氧稳定性显著高于TMR。与含有苜蓿干草的TMR青贮饲料相比，含有羊草的TMR青贮饲料更容易变质。尽管TMR中占主导的乳酸菌并不相同，但青贮56 d后，两种类型的TMR青贮饲料中都发现了相同的优势菌种，即布氏乳杆菌和嗜酸片球菌，它们可能在TMR青贮饲料的有氧稳定性中发挥重要作用。
