Kleinschmit D H, Kung L
Department of Animal and Food Sciences University of Delaware, Newark, Delaware 19716-2150, USA.
J Dairy Sci. 2006 Oct;89(10):3999-4004. doi: 10.3168/jds.S0022-0302(06)72443-2.
The effect of inoculating whole-plant corn at the time of harvest with Lactobacillus buchneri 40788 (4 x 10(5) cfu/g of fresh forage) combined with Pediococcus pentosaceus R1094 (1 x 10(5) cfu/g) on the fermentation and aerobic stability of corn silage (37% dry matter) through 361 d of ensiling was investigated. Dry matter recovery was similar between treatments throughout the study except at one early time point (14 d), when treated silage had a lower recovery than untreated silage. The concentration of lactic acid was unaffected by inoculation but inoculated silages had greater concentrations of 1,2-propanediol and acetic acid from 56 to 361 d of storage. In general, inoculation decreased the concentration of water-soluble carbohydrates but increased the concentration of ethanol. The numbers of yeasts was lower in inoculated silage at 42, 56, 70, and 282 d of ensiling. However, inoculation did not consistently improve the aerobic stability of silage, suggesting that microbes other than yeasts may have been responsible for aerobic instability in this study. Even after prolonged storage (361 d), silage treated with L. buchneri 40788 and P. pentosaceus R1094 had normal silage fermentation characteristics.
研究了在收获时用布氏乳杆菌40788（4×10⁵ cfu/g新鲜饲料）与戊糖片球菌R1094（1×10⁵ cfu/g）接种全株玉米对干物质含量为37%的玉米青贮饲料发酵及有氧稳定性的影响，青贮期为361天。在整个研究过程中，除了一个早期时间点（14天）外，各处理间的干物质回收率相似，此时处理后的青贮饲料回收率低于未处理的青贮饲料。接种对乳酸浓度没有影响，但从储存56天到361天，接种的青贮饲料中1,2 - 丙二醇和乙酸的浓度更高。总体而言，接种降低了水溶性碳水化合物的浓度，但增加了乙醇的浓度。在青贮42天、56天、70天和282天时，接种的青贮饲料中酵母数量较少。然而，接种并未持续提高青贮饲料的有氧稳定性，这表明在本研究中，除酵母外的其他微生物可能是导致有氧不稳定的原因。即使经过长时间储存（361天），用布氏乳杆菌40788和戊糖片球菌R1094处理的青贮饲料仍具有正常的青贮饲料发酵特性。
