| 3个品种柱花草的营养成分和产气特征 |
| |
| 引用本文： | 张亚格,李茂,周汉林,胡琳,李韦,徐铁山.3个品种柱花草的营养成分和产气特征[J].草业科学,2017,34(1). |
| |
| 作者姓名： | 张亚格 李茂 周汉林 胡琳 李韦 徐铁山 |
| |
| 作者单位： | 海南大学农学院,海南 海口 570100;中国热带农业科学院热带作物品种资源研究所,海南 儋州 571737;中国热带农业科学院热带作物品种资源研究所,海南 儋州,571737 |
| |
| 基金项目： | 海南省重大科技项目，国家重点基础研究发展计划课题，中国热带农业科学院基本科研业务费 |
| |
| 摘 要： | 为了研究品种和生育期对柱花草饲用价值的影响,本研究测定了热研2号(Stylosanthes guianensis cv.Reyan No.2)、20号(S.guianensis cv.Reyan No.20)和21号(S.guianensis cv.Reyan No.21)3个品种柱花草不同生育期的营养成分含量,采用体外产气法评价了3个品种柱花草体外发酵特征。结果表明,虽然在营养成分方面热研2号柱花草粗蛋白(CP)、粗脂肪(EE)含量显著高于20号和21号(P0.05),但3个品种的体外产气情况却较为接近,只有热研21号柱花草体外干物质消化率(IVDMD)和微生物蛋白(MCP)含量较低。不同生育期柱花草营养成分中CP、酸性洗涤纤维(ADF)、中性洗涤纤维(NDF)含量以及饲料相对值(RFV)随生育期呈现出较明显的规律性,CP含量先升高后降低,3个品种均是在初花期达到最高;ADF、NDF含量不断升高,RFV值不断降低。柱花草CP含量较高,纤维含量较低,是家畜生产所需的优质牧草。推荐营养期为利用柱花草饲喂动物的最佳时期。
|
| 关 键 词： | 柱花草 营养成分 体外产气 生育期 |
Influence of variety and growth period on the nutrient content and in vitro gas production characteristics of Stylosanthes |
| |
| Zhang Ya-ge,Li Mao,Zhou Han-lin,Hu Lin,Li Wei,Xu Tie-shan.Influence of variety and growth period on the nutrient content and in vitro gas production characteristics of Stylosanthes[J].Pratacultural Science,2017,34(1). |
| |
| Authors: | Zhang Ya-ge Li Mao Zhou Han-lin Hu Lin Li Wei Xu Tie-shan |
| |
| Abstract: | This experiment was conducted to investigate the influence of variety and growth period on the nutrient content of Stylosanthes guianensis cv.Reyan No.2,S.guianensis cv.Reyan No.20,and S.guianensis cv.Reyan No.21,and the in vitro gas production characteristics.The results showed that S.guianensis cv.Reyan No.2 had higher content of crude protein(CP)and crude fat(EE) than did S.guianensis cv.Reyan No.20 and S.guianensis cv.Reyan No.21 in terms of nutrients,but the in vitro gas production of the three varieties was similar,except for S.guianensis cv.Reyan No.21,which had lower in vitro dry matter digestibility(IVDMD) and microbial protein content(MCP).Content of some nutrients in Stylosanthes,such as crude protein,acid detergent fiber(ADF),neutral detergent fiber(NDF),and relative feed value(RFV),presented obvious regularity following the growth periods.The content of CP initially increased,subsequently decreased,and reached a maximum in the initial flowering stage.The content of ADF and NDF increased with growth,and RFV gradually decreased.It was concluded that Stylosanthes have a high content of CP and low fibre content,and are high-quality forage for domestic animals.It was also concluded that the vegetative stage was the proper growth period for animal feed. |
| |
| Keywords: | Stylosanthes nutrient composition in vitro gas production growth periods |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
