覆盖番茄渣对青黄玉米秸秆青贮品质的影响

The Effect of Tomato Pomace as Silage Cover on Quality of Green or Yellow Corn Straw Silages

【目的】探讨覆盖番茄渣对不带穗青、黄玉米秸秆青贮发酵品质和营养成分的影响。【方法】分别用青、黄玉米秸秆青贮调制时用等量番茄渣覆盖,讨论覆盖番茄渣对玉米秸秆发酵品质和营养价值的改善作用。【结果】番茄渣覆盖后提高了青、黄玉米秸秆青贮的乳酸含量及乳酸在总酸中的比例以及秸秆青贮的粗蛋白质(CP)含量和干物质消化率(in vitro)。特别是添加尿素并覆盖番茄渣对黄玉米秸秆的CP含量和干物质消化率有显著提高,分别达到13.89%和76.80%。【结论】覆盖番茄渣的青贮改善玉米秸秆青贮发酵品质,提高CP含量和消化率,对黄玉米秸秆青贮的改善作用尤为明显。

[ Objective ] ： This experiment aims to explore the use of tomato pomace as green or yellow corn straw silage cover and investigate its effect on fermentation quality, nutrient and in vitro dry matter digestibility of straw silages. [ Method] Green or yellow corn straw silage with/without tomato pomace were used in silage cover at a ratio of 50：50 on fresh matter basis to investigate the fermentation quality and nutrients of both corn straw silages. [ Result ] The use of tomato pomace as silage cover can improve the silage fermentation quality of green and yellow corn straw increase lactic acid concentration and the ration in total acids; and crude protein （CP） content and the in vitro dry matter digestibility （IVDMD）. Especially, the improving effect was greater in yellow corn straw silage. Supplementation urea with tomato pomace to cover yellow corn straw increased CP content and dry matter digestion by 13.89% and 76.80%, respectively. [ Conclusion] The use of tomato pomace as silage cover can improve the silage fermentation quality, CP content and the IVDMD of corn straw, especially improve the quality of yellow corn straw silage.