貯藏溫度和芽孢桿菌添加對(duì)高丹草青貯發(fā)酵品質(zhì)和硝酸鹽含量的影響

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中圖分類(lèi)號(hào)：S153 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-0435（2025）05-1669-08

Abstract：The aim of this study was to investigate the effects of storage temperature and Bacillus aditives on the fermentation quality，nutritive value and nitrate contents of sorghum-sudangrass （Sorghum bicolorX sudanense）silage，and to provide atheoretical basis forthe improvementof the fermentation characteristics and nutritional value of sorghum-sudangrass silage at low-temperature. The experiment included two storage temperatures （ 15°C and 25°C ） and four types of additives （control group，Bacillus coagulans，B. licheniformis，and B subtilis at 1.0×105 cfu·g-1 FM）.The results showed that compared with 25°C ，the contents of neutral deter gent fiber， lactic acid and acetic acid were significantly decreased，and the pH and water-soluble carbohydrate were significantly increased at 15°C storage temperature （P<0.05） .When the storage temperature was 15°C the nitrate content of the thre Bacillus treatments was significantly decreased compared with the control group 0 ?<0.05 ）．Theaddition of B .subtilis significantly increased the content of lactic acid and decreased the pH and soluble carbohydrate content of silage （ ?P<0.05 ）；inoculation with B . licheniformis significantly decreased the content of nitrite and soluble carbohydrate ?P<0.05） . In conclusion，compared with 15°C ， 25°C storage conditions significantly improved the fermentation quality of sorghum-sudangrass silage，and B .subtilis signifi cantly improved the fermentation quality of silage at 15°C storage temperature and promoted the degradation of nitrate.

Key words：Sorghum-sudangrass; Silage ;Bacillus; Temperature ;Nitrate ;Fermentation quality

高丹草（SorghumbicolorXsudanense）為禾本科一年生優(yōu)質(zhì)飼草，是以高梁［Sorghumbicolor（L.）Moench]和蘇丹草[Sorghumsudanense（Piper）Stapf]雜交培育而成，聚集了高梁與蘇丹草生物產(chǎn)量高、再生性強(qiáng)、含糖量高、抗旱、耐鹽性強(qiáng)，適應(yīng)性廣等優(yōu)良特點(diǎn)，在北方農(nóng)區(qū)逐漸受到廣大種養(yǎng)戶(hù)的青睞[1]。（剩余13496字）