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对牧草营养价值的评定,目前国内多限于各种营养成分的分析和测定,但有关牧草消化率的资料很少。为了获得适于我省栽培的优良牧草红豆草、苜蓿、无芒雀麦各种营养成分的消化率及消化能,评定它们的营养价值,我们于1989年5～7月进行了试验。一、材料和方法 1.试验动物选用24只品种相同(杂种),年龄(1.5岁左右)和体重(3.64±4.2公斤)相近的健康去势公绵羊,分作3组。试羊在试验开始之前进行驱虫,并于试验开始与结束时空腹称重。 2.供试牧草红豆草、苜蓿和无芒雀麦系本所试验地和繁殖地牧草,于初花期和抽穗期刈割饲喂。前一天下午准备饲草(用铡刀切断,称重记量,装入塑料袋内,以备第二天饲喂),同时采取分析样品500克,测定初水分。试验结束后,将每天所采饲草分析样品混合,用连续划分法取得饲草平均样品,相继分析饲草各种养分的含量,测定饲
The evaluation of the nutritional value of forage grass is currently limited to the analysis and determination of various nutrients, but there is very little information on forage digestibility. In order to obtain the digestibility and digestibility of different nutrients of fine forage grass, alfalfa and broccoli cultivated in our province, we evaluated their nutritional value. We conducted the experiment from May to July 1989. MATERIALS AND METHODS 1. A total of 24 healthy ovariectants of the same breed (hybrid), aged (1.5 years old) and body weight (3.64 ± 4.2 kilograms) were selected as experimental animals and divided into 3 groups. The test sheep was de-wormed before the start of the test and weighed fast on the start and end of the test. 2. The tested forage grass, alfalfa and bromegrass tested and breeding forage grass, early flowering and heading cutting mow feeding. The day before yesterday afternoon, forage grass (trowel cut off, weighed amount, filled into plastic bags for feeding the next day), while taking an analysis of 500 grams of samples, determination of initial moisture. After the end of the experiment, the daily analysis of forage grass samples were mixed with continuous division obtained forage average samples were analyzed forage various nutrients, feed