贵州白山羊对4种牧草的消化及其对石漠化治理的启示  

The Digestion of Guizhou White Goat on the Four Forages and its Enlightenment on Rocky Desertification Control

作　　者：张俞[1,2] 熊康宁[1,2] 张锦华[3] 王元素[1,2] 池永宽 

机构地区：[1]贵州师范大学中国南方喀斯特研究院,贵阳550001 [2]国家喀斯特石漠化防治工程技术研究中心,贵阳550001 [3]贵州省畜牧兽医研究所,贵阳550005

出　　处：《中国畜牧兽医》2015年第7期1724-1731,共8页China Animal Husbandry & Veterinary Medicine

基　　金：国家"十二五"科技支撑计划重大项目"喀斯特高原峡谷石漠化综合治理技术与示范"(2011BAC09B01);贵州省科技计划重大专项"国家喀斯特石漠化防治工程中心关键技术研发与示范"(黔科合重大专项字[2014]6007号)

摘　　要：为了解决白山羊饲料缺乏营养价值参数的问题,更好地了解贵州白山羊对牧草的代谢规律,为石漠化治理中草地营养优化配置与白山羊健康养殖提供参考。试验选取6只安装有永久性瘤胃瘘管去势贵州白山羊,以喀斯特地区紫花苜蓿(Medicago sativa)、白三叶(Trifolium repens)、多年生黑麦草(Lolium perenne)、扁穗雀麦(Bromus catharticus)4种牧草为研究对象,采用尼龙袋法测定4种牧草的干物质(DM)、粗蛋白质(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)瘤胃降解动态及降解模型参数。结果表明,4种牧草DM的72h降解率与有效降解率为白三叶最高(P<0.05),依次降低为紫花苜蓿、扁穗雀麦、多年生黑麦草;4种牧草CP的72h降解率与有效降解率为紫花苜蓿最高(P<0.05),其次为白三叶、扁穗雀麦、多年生黑麦草;4种牧草NDF与ADF的72h降解率与有效降解率表现最好的为扁穗雀麦和紫花苜蓿,白三叶和多年生黑麦草则表现次之。综上所述,白山羊对4种牧草的营养吸收利用状况良好,其中紫花苜蓿的表现最为优越,能够促进喀斯特地区草地畜牧业的发展。In order to solve the problem of the lack of nutritional value parameter of White goats, better understand the metabolism rule in White goats fed pasture,and provide a reference to the optimization allocation of grassland nutrition and healthful aquaculture of white goats in rocky de- sertification control in Guizhou province. Six healthy Guizhou White goats with tureen cannulas were selected, taking Medicago sativa , Trifolium repens , Lolium perenne and Bromus catharticus four kinds of forages in Karst areas as the research object,nylon bag technique was used to deter- mine the degradability dynamics and degradation model parameters of DM, CP, NDF and ADF. The results showed that among four kinds of forages at 72 h,the highest degradation rate and ef- fective degradability rate of DM was white clover （P〈0. 05）, the decrease in the seauenee were alfalfa,rescuegrass and perennial ryegrass;The highest degradation rate and effective degradabili- ty rate of CP was alfalfa （P〈0.05）, followed by were white clover, rescuegrass and perennial ryegrass;While the rescuegrass and alfalfa showed the best for NDF and ADF, white clover and perennial ryegrass came second. The analysis showed that the four kinds of nutrients were ab- sorbed well by White goat, and the alfalfa performance was the most superior which could pro- mote the development of grassland animal husbandry in Karst areas.

关 键 词：喀斯特 牧草 白山羊 消化规律 

分 类 号：S827[农业科学—畜牧学]