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随着我国畜牧业的不断发展,特别是富含蛋白质和能量的优质粗饲料缺乏问题日益凸显。因此,不断改进饲草料种植和收割技术,提高饲料的蛋白质和能量水平,提高消化率成为当务之急。试验选择奇台苏丹草作为试验对象,选择3块试验地进行相同水平种植管理,分别进行1次、2次和3次刈割,分析不同的刈割次数对奇台苏丹草粗蛋白、粗脂肪和粗纤维等营养水平的影响。试验结果表明:随着刈割次数的增加,将提高奇台苏丹草总体粗蛋白、粗脂肪和无氮浸出物水平,降低奇台苏丹草粗纤维和粗灰分的水平。在3次刈割中,粗纤维和粗灰分水平呈现先下降后上升的趋势。试验结果表明:合理增加刈割次数,对提高奇台苏丹草的经济和饲喂价值具有重要意义。
With the continuous development of animal husbandry in our country, the problem of lack of high-quality roughage rich in protein and energy has become increasingly prominent. Therefore, continuous improvement of forage planting and harvesting techniques, raising feed protein and energy levels, increasing digestibility has become a top priority. The experiment selected Kitai sudangrass as the test object, selecting the three experimental sites for the same level of plantation management, respectively, 1, 2 and 3 mowing, analysis of different mowing times on the Qitai sudangrass crude protein, crude fat And crude fiber and other nutritional levels. The results showed that the overall crude protein, crude fat and nitrogen-free extract contents of Sudan grass would increase with the increase of cutting frequency, and the crude fiber and crude ash content of Sudan grass decreased. In the three mowing, crude fiber and crude ash levels showed a downward trend first. The test results show that increasing the number of mowing rationally is of great significance to raising the economic value and feeding value of sudangrass.