Taylor C C, Ranjit N J, Mills J A, Neylon J M, Kung L
Delaware Agricultural Experiment Station, Department of Animal and Food Science College of Agriculture and Natural Resources, University of Delaware, Newark 19717-1303, USA.
J Dairy Sci. 2002 Jul;85(7):1793-800. doi: 10.3168/jds.S0022-0302(02)74253-7.
Chopped barley forage was ensiled untreated or treated with several doses (1 x 10(5) to 1 x 10(6) cfu/g of fresh forage) of Lactobacillus buchneri 40788 in laboratory silos and untreated or treated (4 x 10(5) cfu/g) in a farm silo. Silage from the farm silos was fed to lactating cows. In the laboratory silo, the effects of inoculation on fermentation and aerobic stability were also compared to silage treated with a commercial inoculant and a buffered propionic acid additive. Inoculation with L. buchneri 40788 decreased the final concentrations of lactic acid but increased concentrations of acetic acid and ethanol in silage from laboratory and farm silos. Silages stored in laboratory silos did not heat after exposure to air for 7 d and were then mixed with alfalfa silage and a concentrate to form total mixed rations (TMR) that were further exposed to air. The TMR containing silages treated with L. buchneri 40788 or a buffered propionic-acid-based additive took longer to heat and spoil than the TMR containing untreated silage or silagetreated with the commercial inoculant. Silage stored in a farm silo and treated with L. buchneri 40788 had fewer yeasts and molds than did untreated silage. Aerobic stability was greater in treated silage alone and in a TMR containing treated silage. Dry matter intake (18.6 kg/d), milk production (25.7 kg/d), and milk composition did not differ between cows fed a TMR containinguntreated or treated silage. These findings show that L. buchneri can improve the aerobic stability of barley silage in laboratory and farm silos and that feeding treated silage had no negative effect on intake or performance.
将切碎的大麦草料在实验室青贮窖中不做处理或用几种剂量（每克新鲜草料1×10⁵至1×10⁶ cfu）的布氏乳杆菌40788处理，在农场青贮窖中则不做处理或用（每克4×10⁵ cfu）处理。将农场青贮窖中的青贮料喂给泌乳奶牛。在实验室青贮窖中，还将接种处理对发酵和好氧稳定性的影响与用商业接种剂和缓冲丙酸添加剂处理的青贮料进行了比较。用布氏乳杆菌40788接种可降低实验室和农场青贮窖青贮料中乳酸的最终浓度，但会增加乙酸和乙醇的浓度。储存在实验室青贮窖中的青贮料在暴露于空气中7天后没有升温，然后与苜蓿青贮料和精饲料混合形成全混合日粮（TMR），并进一步暴露于空气中。含有用布氏乳杆菌40788或基于缓冲丙酸的添加剂处理的青贮料的TMR比含有未处理青贮料或用商业接种剂处理的青贮料的TMR升温变质所需时间更长。储存在农场青贮窖中并用布氏乳杆菌40788处理的青贮料比未处理的青贮料含有更少的酵母和霉菌。单独的处理青贮料以及含有处理青贮料的TMR的好氧稳定性更高。饲喂含有未处理或处理青贮料的TMR的奶牛之间，干物质摄入量（18.6千克/天）、产奶量（25.7千克/天）和牛奶成分没有差异。这些发现表明，布氏乳杆菌可提高实验室和农场青贮窖中大麦青贮料的好氧稳定性，并且饲喂处理后的青贮料对采食量或生产性能没有负面影响。
