纤维素酶对不同比例葛藤甘蔗梢混合青贮品质的影响

发布时间：2018-04-14 01:02

本文选题：纤维素酶 + 葛藤　；参考：《家畜生态学报》2017年07期

【摘要】：为开发利用非常规饲料资源—葛藤和甘蔗梢,采用纤维素酶为添加剂,研究其对不同混合葛藤甘蔗梢混合青贮品质的影响。本试验调制了6种混合比例的葛藤甘蔗梢混合青贮。6种混合青贮是按葛藤:甘蔗梢(质量比)分别为100∶0(100K)、90∶10(9K1S)、80∶20(8K2S)、70∶30(7K3S)、60∶40(6K4S)和0∶100(100S)进行。每个比例均设对照组合添加5U/g纤维素酶处理组。每个处理5个重复,常温下贮存50d后开封,测定化学成分和发酵品质评定指标。结果表明,提高甘蔗梢的混合比例或添加纤维素酶处理均能提高葛藤甘蔗梢混合青贮料的品质,随着甘蔗梢的比例升高,青贮料的干物质、粗蛋白、pH和氨态氮含量呈下降趋势,中性洗涤纤维、半纤维素和乳酸含量呈升高趋势。无添加剂处理时6K4S比例青贮效果较好,添加纤维素酶处理后,可降低甘蔗梢的混合比例,即8K2S和7K3S青贮料的营养价值和发酵品质较好。
[Abstract]:In order to develop and utilize the unconventional feed resources-Pueraria and sugarcane shoots, cellulase was used as additive to study the effect of cellulase on the mixed silage quality of different mixed kudzu cane shoots.In this experiment, the mixed silage of six mixed proportions of kudzu cane cane shoot and mixed silage were carried out according to the ratio of Pueraria and sugarcane shoot (mass ratio) of 100: 0: 100: 10: 10K1S1, 80: 20, 8K2S1, 7030: 7K3S (60V 406K4S) and 0100m (100S), respectively.Each proportion was treated with 5U/g cellulase.After storage for 50 days at room temperature, the chemical components and fermentation quality were determined.The results showed that the quality of mixed silage could be improved by increasing the mixed ratio of sugarcane shoots or adding cellulase. With the increase of the ratio of sugarcane shoots, the dry matter, crude protein pH and ammonia nitrogen content of the silage decreased.The content of neutral detergent fiber, hemicellulose and lactic acid increased.The ratio of 6K4S to silage was better when treated without additive. Adding cellulase could reduce the mixed proportion of sugarcane shoots, that is, the nutrient value and fermentation quality of 8K2S and 7K3S silage were better.
【作者单位】：福建省农业科学院畜牧兽医研究所;福建农林大学动物科学学院;福建省农业科学院生态研究所;
【基金】：福建省农业科学院杰出青年人才基金(2016JQ-2);福建省农业科学院青年英才计划(YC2016-9) 省属公益类科研院所基本科研专项(2015R1023-14)
【分类号】：S816.53

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