Sorghum [Sorghum bicolor (L.) Moench] is an ensilable tropical plant known as a good alternative to maize crops in regions with scarce rainfall. The objective of this trial was to obtain prediction models based on nutritional contents and end products of sorghum silage fermentation as related to the dry‐matter composition of fresh plants before ensiling. Eleven different sorghum cultivars (including silage, graniferous and sweet types) were used. Twenty‐five sorghum plots were harvested between 80 and 120 days of growth. Fifty plastic buckets were used as experimental microsilos and opened between 60 and 90 days of storage. Statistical modelling was used to create a prediction equation that could explain the impact of fresh sorghum composition on the chemical and nutritional composition of its silage. A complex model was detected by stepwise multiple regression to predict the difference of in vitro dry‐matter digestibility (IVDMD) before and after ensiling, but a simpler model, which involved only the sum of water‐soluble carbohydrate (fWSC) and hemicellulose (fHemi) concentrations in the dry matter of fresh forage, was considered to more usable. It had an acceptable coefficient of determination (0.51). The higher amount of WSC and Hemi in fresh sorghum linearly decreased the difference between IVDMD before and after the ensiling process. A WSC concentration of 125.4 g/kg DM in fresh sorghum is recommended for an ideal silage fermentation when considering pH and lactic acid levels, although ethanol levels continued to increase.

中文翻译：

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化学营养因素决定的高粱青贮品质

高粱[高粱（L.）Moench]是一种可耕作的热带植物，在降雨量少的地区被称为玉米作物的良好替代品。该试验的目的是获得基于高粱青贮饲料发酵的营养成分和终产物的预测模型，该模型与青贮之前新鲜植物的干物质组成有关。使用了11个不同的高粱品种（包括青贮，花序和甜型）。在生长80至120天之间收获了25个高粱地块。五十个塑料桶用作实验性微型料仓，并在60至90天的存储时间内打开。统计模型用于创建预测方程，该方程可解释新鲜高粱组成对其青贮饲料化学和营养成分的影响。通过逐步多元回归检测到一个复杂的模型，以预测在贴片之前和之后体外干物质消化率（IVDMD）的差异，但是一个更简单的模型仅涉及水溶性碳水化合物（fWSC）和半纤维素（fHemi）的总和。 ）在新鲜饲料干物质中的浓度，被认为更有用。它的测定系数为可接受的（0.51）。新鲜高粱中WSC和Hemi的含量较高，线性降低了贴花前后IVDMD之间的差异。考虑到pH和乳酸水平，尽管乙醇水平持续增加，但建议将新鲜高粱中的WSC浓度为125.4 g / kg DM进行理想的青贮发酵。它仅涉及新鲜饲料干物质中水溶性碳水化合物（fWSC）和半纤维素（fHemi）浓度之和，被认为更有用。它的测定系数为可接受的（0.51）。新鲜高粱中WSC和Hemi的含量较高，线性降低了贴花前后IVDMD之间的差异。考虑到pH和乳酸含量，尽管乙醇含量持续增加，建议将新鲜高粱中的WSC浓度为125.4 g / kg DM进行理想的青贮发酵。它仅涉及新鲜饲料干物质中水溶性碳水化合物（fWSC）和半纤维素（fHemi）浓度之和，被认为更有用。它的测定系数为可接受的（0.51）。新鲜高粱中较高的WSC和Hemi含量线性降低了贴花之前和之后IVDMD之间的差异。考虑到pH和乳酸水平，尽管乙醇水平持续增加，但建议将新鲜高粱中的WSC浓度为125.4 g / kg DM进行理想的青贮发酵。新鲜高粱中WSC和Hemi的含量较高，线性降低了贴花前后IVDMD之间的差异。考虑到pH和乳酸水平，尽管乙醇水平持续增加，但建议将新鲜高粱中的WSC浓度为125.4 g / kg DM进行理想的青贮发酵。新鲜高粱中WSC和Hemi的含量较高，线性降低了贴花前后IVDMD之间的差异。考虑到pH和乳酸水平，尽管乙醇水平持续增加，但建议将新鲜高粱中的WSC浓度为125.4 g / kg DM进行理想的青贮发酵。