安徽省野生芭茅草的生长性能及营养价值

Growth Performance and Nutritional Value of Wild Bamao Grass in Anhui Province

[目的]为研究安徽省芭茅草野外自然生长的性能及营养价值。[方法]试验2020年4—10月在安庆太湖地区,每隔30 d左右刈割1次,对试验地芭茅草的产量、生长速度和常规营养价值进行测定和检测。[结果]结果表明,野生芭茅草株高152.80~174.80 cm,1年刈割1次即可,鲜草产量24.68~28.22 t/hm^(2),干草产量6.85~11.10 t/hm^(2),4—7月生长速度快,6—7月最快可达5.15 cm/d,含水率55.20%~80.54%,以干物质为基础的粗蛋白含量(CP)7.50%~10.76%,粗纤维(CF)31.50%~42.90%,中性洗涤纤维(NDF)63.00%~74.40%,酸性洗涤纤维(ADF)35.40%~44.60%,粗灰分(Ash)6.40%~11.20%,粗脂肪(EE)、Ca、P含量低。[结论]芭茅草产量丰富,营养价值高于一般农作物秸秆,说明芭茅草可作为肉牛粗饲料推广使用。

[Objective]The objective was to study the natural growth performance and nutritional value of wild bamao grass in Anhui province.[Method]This experiment was carried out in Anqing Taihu area from April to October 2020.The bamao grass was cut about every 30 days,and the yield,growth rate and conventional nutritional value of bamao grass were measured and analyzed.[Result]The results showed that the plant height of wild bamao grass was 152.80~174.80 cm.It could be cut once a year.The yield of fresh grass was 24.68~28.22 t/hm^(2),hay was 6.85~11.10 t/hm^(2),the growth rate was fast from April to July and the fastest was 5.15 cm/d from June to July.The moisture content was 55.20%~80.54%.The crude protein content(CP)based on dry matter was 7.50%~10.76%,the crude fiber(CF)was 31.50%~42.90%,and the neutral detergent fiber(NDF)was 63.00%~74.40%,acid detergent fiber(ADF)was 35.40%~44.60%,and crude ash(Ash)was 6.40%~11.20%.But the contents of crude fat(EE),Ca and P were low.[Conclusion]The yield of bamao grass was rich and its nutritional value was higher than that of general crop straw,which indicated that bamao grass could be popularized as roughage for beef cattle.