畜牧兽医学报2011，Vol.42Issue(3)：381-388,8.
夏季窖内不同深度全株玉米青贮品质和营养价值的比较
Comparisons of the Quality and Nutritional Value of Whole-plant Corn Silage at Various Depths under the Top Surface of Silo in Summer
摘要
Abstract
This study evaluated the effect of simple covering of silo on the quality and nutritional value of whole-plant corn silage in summer. The silage samples were taken from 10, 20, 40, 80,160 and 320 cm under the top surface of aboveground silo and analysed for their quality, nutritional composition and in vitro DM digestibility. The results showed that the whole-plant corn silage from 0 to 40 cm under the surface of the silo contained the higher population of fungi and lactobacilli, the higher content of NDF, ADF and butyric acid, the higher pH value, but the lower content of total sugars. Moreover, as sampling depths increased, the contents of DM, total sugars and WSC, pH values and DMD decreased gradually, but the contents of lactic acid, acetic acid, NDF and ADF increased, with the contents of crude protein and EE remaining unaffected.Therefore, both the simple covering of the silo and the depths under the top surface of the silo significantly affected the quality, nutritional composition and in vitro DM digestibility (DMD) of whole-plant corn silage in summer.关键词
青贮窖/全株玉米青贮/营养价值分类
农业科技引用本文复制引用
闫贵龙,曹春梅,刁其玉,洪梅,王建红..夏季窖内不同深度全株玉米青贮品质和营养价值的比较[J].畜牧兽医学报,2011,42(3):381-388,8.基金项目
国家科技支撑项目(2006BAD04A04-05) （2006BAD04A04-05）
