绿汁发酵液和纤维素酶对稻草青贮及稻草、甘蔗梢混合青贮品质的影响

发布时间：2018-04-29 00:25

本文选题：稻草 + 甘蔗梢　；参考：《中国畜牧兽医》2017年12期

【摘要】：本研究以稻草和甘蔗梢为青贮原料,调制稻草青贮及稻草与甘蔗梢混合青贮(混合比例为6∶4(m/m))。在稻草青贮及稻草、甘蔗梢混合青贮中均设计添加2 mL/kg的绿汁发酵液组(FGJ)、3 mL/kg的纤维素酶组(CEL)、2mL/kg绿汁发酵液+3mL/kg纤维素酶的复合组(MIX)和对照组(CON),每个处理重复3次,室温条件下贮存60d后开封,测定青贮的发酵品质和化学成分。结果显示,青贮原料稻草干物质中的可溶性碳水化合物(WSC)和粗蛋白质(CP)含量均低于甘蔗梢,而中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)含量均高于甘蔗梢。稻草单独青贮后,与CON组相比,FGJ组的NDF、ADF、pH和氨态氮均极显著降低(P0.01),WSC极显著增加(P0.01),干物质回收率(DMR)升高;MIX组的NDF、ADF、pH、气体损失率(GLR)和氨态氮均极显著降低(P0.01),乳酸、WSC及DMR升高;CEL组中除ADF显著降低外,其他指标也有不同程度的改善。与稻草青贮相比,稻草、甘蔗梢混合青贮的pH、氨态氮、NDF和半纤维素(HC)均降低,而DMR和WSC均明显升高。综上所述,绿汁发酵液及其与纤维素酶的复合添加剂对改善稻草青贮及稻草、甘蔗梢混合青贮品质的效果相近,且优于纤维素酶;稻草、甘蔗梢混合青贮的品质优于稻草青贮。
[Abstract]:In this study, rice straw and sugarcane shoots were used as silage materials to modulate the silage of rice straw silage and rice straw and sugar cane shoots (mixing ratio of 6: 4 (m/m)). A 2 mL/kg green juice fermentation broth (FGJ), 3 mL/kg fibrinase group (CEL), and +3mL/kg cellulase in 2mL/kg green juice fermentation broth were designed in the rice straw silage and straw silage. The results showed that the content of soluble carbohydrate (WSC) and crude protein (CP) in the dry matter of the silage rice straw was lower than that of the sugarcane shoots, and the neutral detergent fiber (NDF), acid washing fiber (AD), and the acid washing fiber (AD) were 3 times per treatment, and after storage of 60d at room temperature. F) content was higher than that of sugarcane shoots. After single silage, the NDF, ADF, pH and ammonia nitrogen in FGJ group were significantly decreased (P0.01), WSC extremely increased (P0.01) and dry matter recovery (DMR) increased significantly compared with CON group, and MIX group NDF, gas loss and ammonia nitrogen were significantly reduced. As compared with rice straw silage, the pH, ammonia nitrogen, NDF and hemicellulose (HC) of rice straw and sugarcane shoots were reduced, and both DMR and WSC were all decreased, compared with rice straw silage. In summary, the mixed additive of green juice and cellulase to the rice straw silage and straw, and the sugar cane shoot Mixed Silage The quality is similar to that of cellulase, and the quality of rice straw and sugarcane tip Mixed Silage is better than that of straw silage.

【作者单位】：福建农林大学动物科学学院;福建傲农生物科技集团股份有限公司;
【基金】：福建省教育厅科技项目(JK2009010) 国家菌草工程技术研究中心开放基金课题(JCJJ13017)
【分类号】：S816.53

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