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本研究开展三项大捆装青贮料饲养试验,目的是为了观测能否在不同食物调制和不同投给方式条件下,重新证实以前确认的多花黑麦草栽培品种干草间进食量差异。连续两年用同一种大田作物调制青贮料并饲喂各组黄牛。第二年用青贮料舍饲绵羊,参试家畜都采取随意采食方式,并且记录每组黄牛和每只绵羊的自由采食量。同时记录每组绵羊的咀嚼活动。由此提出,进食量差异与靠咀嚼进行分类的饲料物理抗性有关,与消化率无关。这些差异取决于植物的结构性与茎叶比和耐酸纤维含量有关,而不受饲料保存方法和投给方式的影响。
Three large-bale silage rearing trials were conducted in this study to see if we could re-validate the differences in feed intake among previously confirmed ryegrass cultivars under different dietary conditions and with different feeding regimes. For two consecutive years, the same type of field crop was used to prepare silage and fed each group of cattle. In the second year, sheep were silaged with ensiling material. The test animals adopted free feeding mode, and the free feed intake of each group of cattle and each sheep was recorded. At the same time, the chewing activity of each group of sheep was recorded. It is thus suggested that the differences in food intake are related to the physical resistance to feed classified by chewing and not to digestibility. These differences depend on the plant’s structure and stem and leaf ratio and acid-resistant fiber content, regardless of feed preservation methods and feeding methods.