本文關(guān)鍵詞： 玉米秸稈 微生物處理 防霉抑菌 常規(guī)營養(yǎng)成分　出處：《東北農(nóng)業(yè)大學(xué)學(xué)報》2016年12期 　論文類型：期刊論文

【摘要】：試驗(yàn)旨在研究產(chǎn)幾丁質(zhì)酶枯草芽孢桿菌BS-1、產(chǎn)酸植物乳桿菌LABP及其組合處理對抑制玉米秸稈霉變效果。試驗(yàn)設(shè)置3組,玉米秸稈含水量依次為15%、20%、25%,每組添加BS-1、LABP及其復(fù)合菌株處理,以0.5%丙酸為陽性對照,無處理為空白對照。密閉真空保存30 d后開封有氧存放,于存放期內(nèi)取樣測定有氧穩(wěn)定性、常規(guī)營養(yǎng)成分含量,檢測玉米秸稈中的霉菌數(shù)量變化。結(jié)果表明,玉米秸稈霉變初期(15 d以內(nèi))DM、Starch含量顯著下降,而CP、NDF含量呈上升趨勢,對ADF則無顯著影響。隨霉變程度加重,各常規(guī)營養(yǎng)指標(biāo)變化幅度增加,Starch相對損失率最高。三組相比,當(dāng)玉米秸稈含水量為20%時,添加107cfu·g-1的BS-1、LABP復(fù)合菌液處理在一定程度上抑制玉米秸稈中霉菌生長,增加玉米秸稈有氧穩(wěn)定性,降低常規(guī)營養(yǎng)成分損失率及霉菌總數(shù),效果與0.5%丙酸處理相近;玉米秸稈含水量為25%時,各處理對抑制霉變均無顯著效果。
[Abstract]:The purpose of the experiment was to study the effects of chitinase producing Bacillus subtilis BS-1, Lactobacillus acidogenic LABP and its combination on inhibiting corn straw mildew. 0.5% propionic acid was used as positive control and no treatment was used as blank control. After 30 days of closed vacuum preservation, aerobic storage was carried out after opening, and aerobic stability was measured by sampling during storage period. The results showed that the content of ADF in corn straw decreased significantly within 15 days, but the content of CPN increased, but it had no significant effect on ADF. The relative loss rate of Starch was the highest in the three groups. When the water content of corn straw was 20, the treatment with 107cfu 路g ~ (-1) BS-1 / L _ (LABP) could inhibit the growth of mildew in corn straw to a certain extent. The effect of increasing aerobic stability of corn straw and reducing the loss rate of conventional nutrients and the total number of molds was similar to that of 0.5% propionic acid treatment, but when the moisture content of corn straw was 25, there was no significant effect of each treatment on inhibiting mildew.
【作者單位】： 東北農(nóng)業(yè)大學(xué)動物科學(xué)技術(shù)學(xué)院;
【基金】：國家奶牛產(chǎn)業(yè)技術(shù)體系項(xiàng)目(CARS-37)
【分類號】：S816
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本文編號：1518563