秸秆在肉牛饲养中的利用及其纤维表观消化率

Utilization and Fiber Apparent Digestibility of Crop Straw in Feeding Process of Beef Cattle

纤维素是世界上最丰富的可再生资源,将含纤维素丰富的秸秆处理作为饲料,对农业可持续发展和缓解秸秆焚烧压力有重要现实意义。本试验选择20头夏洛莱肉牛随机分成4组,测定肉牛对中性洗涤纤维和酸性洗涤纤维的表观消化率及体重。试验结果表明,不同处理组肉牛的采食及排泄中性洗涤纤维和酸性洗涤纤维均差异显著。微储鲜秸秆配合花生糠处理组中性洗涤纤维和酸性洗涤纤维的表观消化率均最高,分别为63.13%和45.35%,且肉牛的累计体重增加最大,7个月增加的体重平均为228 kg。

Fiber is the most plentiful renewable resources all over the world. It is available to process them into high - quality feed for the agricultural sustainable development and relieving pressure of burning crop straw. In the experiment, 20 beef cattle were selected and separated into 4 groups at random, then their weight gain and apparent digestibility of neutral detergent fiber （NDF） and acid detergent fiber （ADF） were measured. The results showed that the differences of intake and excretion of NDF and ADF were significant among different treatment groups. The highest apparent digesting rate of NDF and ADF were 63. 13% and 45.35% respectively noted in cattle fed with micro -deposited flesh crop straw and peanut bran together with the largest weight gain of 228 kg.