花椰菜茎叶与玉米秸秆的混贮品质  

Effects of broccoli stems and leaves and maize straw mix-ensiling on silage quality

作　　者：杨道兰[1] 汪建旭[1] 冯炜弘[1] 张艳[1] 尹燕[1] 王永林[1] 

机构地区：[1]兰州市农业科技研究推广中心,甘肃兰州730010

出　　处：《草业科学》2014年第3期551-557,共7页Pratacultural Science

基　　金：甘肃省农牧厅农业科技创新项目(GSCX-2012-02)

摘　　要：本研究采用晾晒萎蔫的花椰菜(Brassica capitata)茎叶、新鲜花椰菜茎叶及玉米(Zea mays)秸秆不同比例的混合料为原料进行青贮,通过分析感官指标、pH值、粗蛋白、可溶性碳水化合物、中性洗涤纤维、酸性洗涤纤维、乙酸、丙酸、丁酸、乳酸和总酸等的变化,研究不同比例混贮对饲料品质的影响。结果表明,经过晾晒至水分含量75%的花椰菜茎叶中加入一定的添加剂能够成功青贮;花椰菜茎叶与玉米秸秆以质量比7∶3混贮,能显著提高青贮料的可溶性碳水化合物、乳酸和丙酸含量(P<0.05),降低pH值、丁酸含量(P<0.05),说明添加30%的玉米秸秆能够改善花椰菜茎叶的青贮品质。Silages of withered stems and leaves of broccoli, fresh stems and leaves of broccoli and mixture of maize straw were evaluated by measuring sensory index, pH, crude protein （CP）, water soluble carbohydrates（WSC）, neutral detergent fiber （NDF）, acid detergent fiber （ADF）, acetic acid（AA）, propionic acid （PA）, butyric acid （BA）, lactic acid （LA） and total acid （TA）. The results showed that stems and leaves of broccoli withered to 75% water content with certain additive could be ensiled successfully; and WSC, LA, PA in the silage were significantly increased while pH value, BA were significantly reduced （P〈0.05） when the mix-ensiling ratio of broccoli waste to maize straw was 7∶3. This indicated that broccoli silage quality can be improved by addition of 30% maize straw.

关 键 词：花椰菜茎叶 玉米秸秆 混合青贮 发酵品质 

分 类 号：S816.53[农业科学—饲料科学]