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首页> 外文期刊>Animal Feed Science and Technology >Characterizing the ensiling properties of sugarbeets with dry feedstuffs
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Characterizing the ensiling properties of sugarbeets with dry feedstuffs

机译：用干饲料表征甜菜的保鲜性能

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A study was conducted to evaluate the ensiling characteristics of chopped sugarbeets with dry feedstuffs and the corresponding change in the nutritive composition of the silages with the addition of dry substrates. Pre-calculated amounts of each feedstuff were weighed individually to achieve desired proportions of each silage product and thoroughly mixed for 5 min. After mixing, the silage was distributed evenly into three 19-L buckets and sealed to provide an anaerobic environment. The treatments for this study were arranged in a 4 x 4 +1 factorial design to determine the effects of DM level and source of dry feedstuff on the ensiling properties of sugarbeets following a 42-d fermentation period. Treatments were ensiled sugarbeets alone (250g/kg) or based on (1) formulated silage DM concentrations of 275, 350,425, and 500g/kg and (2) the inclusion of dry feedstuffs (alfalfa hay, dry-rolled corn, wheat middlings, and wheat straw). Fermentation and nutritive characteristics of ensiled sugarbeets were influenced with the addition of dry substrates. A linear increase (P<0.001) in silage pH was observed with the addition of alfalfa, dry-rolled corn, wheat middlings, and wheat straw to ensiled sugarbeets. Lactic acid increased (P<0.001) with the addition of wheat middlings. Alfalfa addition to sugarbeet silage did not alter (P<0.001) lactate concentration. Concentration of lactate decreased (P=0.01) when corn was added, while wheat straw addition did not influence (P=0.37) lactate. A contrast was usedto compare ensiling characteristics of sugarbeets alone (250 g/kg DM) to 350 g/kg DM (sugarbeets with dry substrates). Results indicated fermentative parameters were altered; pH increased (P<0.001) for all dry substrates while lactate was lower (P=0.003) for the sugarbeets ensiled with dry-rolled corn compared with sugarbeets ensiled alone. Alfalfa, wheat straw, and wheat middlings decreased (P<0.001) while dry-rolled corn did not affect (P=0.54) in vitro DM digestion. These results indicate the inclusion of dry feedstuffs with sugarbeets altered fermentation and with the exception of corn, decreased in vitro DM digestion. Nutrient composition and DM content of ensiled sugarbeets was altered with the addition of dry substrates.
机译：进行了一项研究，以评估切碎的甜菜和干饲料的青贮特性，以及添加干基质后青贮饲料营养成分的相应变化。分别称量每种饲料的预计算量，以达到每种青贮饲料所需的比例，并充分混合5分钟。混合后，将青贮饲料均匀地分配到三个19 L的桶中，并密封以提供厌氧环境。本研究的处理方法采用4 x 4 +1析因设计，以确定DM水平和干饲料来源对42天发酵期后甜菜保鲜性能的影响。处理方法是单独青贮甜菜（250g / kg）或基于（1）配制的青贮饲料DM浓度分别为275、350、425和500g / kg，以及（2）包括干饲料（苜蓿干草，干轧玉米，小麦中段，和麦草）。添加干基质会影响青贮甜菜的发酵和营养特性。在青贮甜菜中添加苜蓿，干轧玉米，小麦中和小麦秸秆后，青贮饲料pH呈线性增加（P <0.001）。小麦中添加的乳酸增加（P <0.001）。苜蓿除甜菜青贮饲料外未改变（P <0.001）乳酸浓度。当添加玉米时，乳酸盐的浓度降低（P ＝ 0.01），而加入麦秸不影响（P ＝ 0.37）乳酸盐。对比用于比较甜菜（250 g / kg DM）和350 g / kg DM（甜菜干基质）的保鲜特性。结果表明发酵参数已改变;与单独碾压的甜菜相比，使用干轧玉米碾压的甜菜的所有干燥基质的pH值均升高（P <0.001），而乳酸盐则更低（P = 0.003）。苜蓿，小麦秸秆和小麦中粒减少（P <0.001），而干轧玉米不影响体外DM消化（P = 0.54）。这些结果表明，甜菜干饲料的加入改变了发酵，除玉米外，降低了DM的体外消化率。青贮甜菜的营养成分和DM含量随干基质的添加而改变。

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