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首页> 美国卫生研究院文献>ISRN Veterinary Science >Effect of Tannin-Binding Agents (Polyethylene Glycol and Polyvinylpyrrolidone) Supplementation on In Vitro Gas Production Kinetics of Some Grape Yield Byproducts
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Effect of Tannin-Binding Agents (Polyethylene Glycol and Polyvinylpyrrolidone) Supplementation on In Vitro Gas Production Kinetics of Some Grape Yield Byproducts

机译：补充单宁结合剂（聚乙二醇和聚乙烯吡咯烷酮）对某些葡萄副产品体外产气动力学的影响

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摘要

The effects of polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) on in vitro gas production characteristics, organic matter digestibility (OMD), and metabolizable energy (ME) contents of some grape yield byproducts were investigated. The gas production was recorded after 2, 4, 6, 8, 12, 16, 24, 36, and 48 h of incubation. The gas production profiles in triplicate fitted with equation Y = A (1 – e−ct). The data was analyzed using completely randomized design. Total phenol (TP) and total tannin (TT) contents were highest for raisin waste (RW). The TP content (g/kg DM) ranged from 30.1 in grape pomace (GP) to 96.3 in RW, which also had the higher TT (72.1 g/kg DM). The potential gas production (a + b) of DGB, GP, and RW were 239.43, 263.49, and 208.22 mL/g DM, respectively. In the absence of PEG and PVP, rate constant of gas production (c) for GP was highest among the feedstuffs (0.1073 mL/h), but in presence of PEG or PVP, RW had highest fraction (c) among the feedstuffs. Addition of PEG and PVP inactivated effects of tannins and increased gas production, ME, NE1, OMD, and VFA in grape yield byproducts. Addition of PEG and PVP could overcome adverse effects of tannins on nutrient availability as indicated by gas production parameters.
机译：研究了聚乙二醇（PEG）和聚乙烯吡咯烷酮（PVP）对一些葡萄产量副产物的体外产气特性，有机物消化率（OMD）和代谢能（ME）含量的影响。在孵育2、4、6、8、12、16、24、36和48？h后记录产气。气体产量曲线一式三份地拟合方程Y = A（1 – e -ct ）。使用完全随机设计分析数据。葡萄干废料（RW）中总酚（TP）和单宁（TT）含量最高。 TP含量（g / kg DM）介于葡萄果渣（GP）中的30.1至RW中的96.3之间，TT含量也更高（72.1μg/ kg DM）。 DGB，GP和RW的潜在产气量（a + b）分别为239.43、263.49和208.22 mL / g DM。在没有PEG和PVP的情况下，饲料中GP的产气速率常数（c）最高（0.1073 mL / h），但是在有PEG或PVP的情况下，RW在饲料中的分数（c）最高。 PEG和PVP的添加会导致单宁酸的失活，并增加葡萄产量副产品中的产气量，ME，NE1，OMD和VFA。如产气参数所示，添加PEG和PVP可以克服单宁酸对养分利用率的不利影响。

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