牧草叶作为饲料原料的营养价值分析  

Nutrition Value of Leaves of Forage Grasses as Feedstuffs

作　　者：刘远[1] 吴贤锋 陈鑫珠[1] 高承芳[1] 张晓佩[1] 李文杨[1] Liu Yuan;Wu Xianfeng;Chen Xinzhu;Gao Chengfang;Zhang Xiaopei;Li Wenyang(Animal Husbandry and Veterinary Institution,Fujian Academy of Agricultural Sciences,Fuzhou 350013)

机构地区：[1]福建省农业科学院畜牧兽医研究所,福州350013

出　　处：《中国农学通报》2018年第17期135-139,共5页Chinese Agricultural Science Bulletin

基　　金：福建省省属公益类科研院所基本科研专项"羔羊早期断奶育肥应用研究"(2014R1023-8);福建省农业科学院科技创新团队"福建地方山羊品种优化保护综合技术研究中心"(2016PI-12);福建省科技厅星火项目"肉羊优良品系繁育与配套标准化健康养殖技术研究与示范"(2016S0014)

摘　　要：研究旨在测定5种牧草叶片的主要营养成分,分析、评价其氨基酸的营养价值,以期为牧草叶型饲料的开发利用提供科学依据。各样品的粗蛋白、氨基酸、粗脂肪、钙、磷含量采用常规方法测定,中性洗涤纤维和酸性洗涤纤维含量采用滤袋法测定;采用必需氨基酸的氨基酸评分及化学评分评价各样品氨基酸营养价值。结果表明:(1)5种牧草叶片中CP、Ca、NDF和ADF含量的差异较大,其中CP、Ca、NDF含量差异均达到显著水平(P<0.05);水葫芦CP含量最高;2种豆科牧草叶片的CP含量显著高于禾本科牧草叶片,ADF含量则显著低于禾本科牧草叶片。(2)5种牧草叶片氨基酸种类齐全,总氨基酸、必需氨基酸含量丰富;蛋氨酸是5种牧草叶片的共同第一限制性氨基酸。可得出结论:(1)水葫芦、紫花苜蓿、葛藤叶片的CP含量较高,可以作为蛋白饲料原料开发利用。(2)多花黑麦草和杂交狼尾草叶可以作为优质粗饲料进行开发利用。(3)利用5种牧草叶片配制牧草叶型畜禽全价饲料应适当添加蛋氨酸或补充富含蛋氨酸的原料。To study the nutrient composition of leaves from five kinds of forage grasses,evaluate the nutritionvalue of amino acid,and provide a scientific basis for the development and utilization of forage grasses fodder,crude protein,amino acid,crude fat,Ca and P were measured by conventional method,neutral detergent fiberand acid detergent fiber were measured by filter-bag method,the nutrition value of amino acid was evaluatedby essential amino-acid scoring and chemistry scoring.The results indicated that：（1） the contents of CP,Ca,NDF and ADF were significantly different,the content of CP of water hyacinth was the highest,and CPcontents in two kinds of leguminous forages grasses were significantly higher than that in gramineous foragegrasses,while ADF contents in leguminous forages grasses were significantly lower than that in gramineousforage grasses;（2） there were amino acids of full range in the forages grasses,the contents of total amino acidsand essential amino-acids were rich,methionine was the limiting amino acid in forages grasses.Theconclusion showed that（1） CP content in water hyacinth,alfalfa and kudzu were higher,which could be used asfeedstuff;（2） Italian rye and hybrid wolftail could be developed as coarse fodder;（3） methionine or methionine-rich raw material should be added when producing complete formula feed for animals with the five kinds offorage grasses.

关 键 词：叶蛋白 牧草 饲料原料 氨基酸组成 营养价值评价 

分 类 号：S816.51[农业科学—饲料科学]