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首页> 外文期刊>Journal of Animal Science and Technology >Effects of cellulolytic microbes inoculation during deep stacking of spent mushroom substrates on cellulolytic enzyme activity and nutrients utilization by sheep.
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Effects of cellulolytic microbes inoculation during deep stacking of spent mushroom substrates on cellulolytic enzyme activity and nutrients utilization by sheep.

机译：蘑菇基质深度堆积过程中接种纤维素分解微生物对绵羊纤维素分解酶活性和养分利用的影响。

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摘要

This study was conducted to determine effect of cellulolytic microbe inoculation on sawdust-based spent mushroom substrate (SMS) during deepstacking on fermentation parameters, total microbial counts and cellulolytic enzyme activity and SMS nutrient utilization of sheep. For sheep metabolism trials, six rams, 54.8 kg, were fed a control diet (70% concentrates, 15% rice straw and 15% SMS with no microbial treatment on a dry basis) and a treatment diet (the same diet including SMS with a microbial treatment) for two trials. Spent mushroom substrates with or without microbial (Enterobacter ludwigii, Bacillus cereus and 2 strains of Bacillus subtillis) treatment (1% of SMS on wet basis) were deepstacked for seven days. The internal temperatures in 1.2 M/T of SMS deepstacks reached 50+or-5 degrees C within seven days of storage. The total microbial counts significantly decreased (P<0.05) with deepstacking process and were not affected (P>0.05) by the microbial treatment. For fibrolytic enzyme activity, CMCase and xylanase activities decreased (P<0.05) by the deepstacking process. After deepstacking, the microbial treatment was ~2.5-times higher (P<0.05) for CMCase activity and ~four times higher (P<0.05) in xylanase activity than the control. Activities of ligninolytic enzymes (laccase and MnP) were not affected by the microbial treatment. The sheep fed with microbially treated SMS diet had higher ash (P=0.051), NFE (P=0.071), hemicellulose (P=0.087) and NDF (P=0.096) digestibilities than those fed with untreated SMS diet. Nitrogen balance of sheep was not affected (P>0.05) by microbially treated SMS. It is suggested that cellulolytic microbe inoculation during deepstacking of SMS improves the SMS utilization of sheep.
机译：本研究旨在确定纤维素酶微生物接种对深堆放过程中以木屑为基础的废蘑菇基质（SMS）对绵羊的发酵参数，总微生物数量，纤维素酶活性和SMS养分利用的影响。对于绵羊代谢试验，给6只公羊54.8千克饲喂对照饮食（70％精矿，15％稻草和15％SMS，未经微生物干处理）和治疗饮食（相同饮食，包括SMS和微生物治疗）进行两次试验。将用过或未用过微生物（路德维氏肠杆菌，蜡状芽孢杆菌和2株枯草芽孢杆菌）（用1％的SMS湿处理）处理过的蘑菇基质进行深层堆放7天。在存储的7天内，SMS深度堆栈的1.2 M / T的内部温度达到50+或-5摄氏度。随着深度处理，总微生物数显着下降（P <0.05），而未受到微生物处理的影响（P> 0.05）。对于纤溶酶活性，CMCase和木聚糖酶活性通过深层堆放过程降低（P <0.05）。深堆后，微生物处理的CMCase活性比对照高约2.5倍（P <0.05），木聚糖酶活性约高4倍（P <0.05）。木质素分解酶（漆酶和MnP）的活性不受微生物处理的影响。饲喂经微生物处理的SMS饲喂的绵羊比未饲喂SMS饲喂的绵羊具有更高的灰分（P = 0.051），NFE（P = 0.071），半纤维素（P = 0.087）和NDF（P = 0.096）。微生物处理的SMS不会影响绵羊的氮平衡（P> 0.05）。建议在深层堆肥过程中接种纤维素分解微生物可以提高绵羊的SMS利用率。

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