摘要
利用尼龙袋法对狍常用饲料的营养价值进行了初步评定,测定了2个细度、4种有代表性饲料的瘤胃外流速度(kp)和8种饲料在狍瘤胃中的干物质有效降解率(DMD)、蛋白质有效降解率(CPD)、有机物有效降解率(OMD)。试验结果表明:不同种类饲料通过狍瘤胃的速度不同,但性状、粒度相近的饲料外流速度相近,饲料颗粒加大时,瘤胃外流速度减慢。豆粕、玉米面、柞树叶、玉米青贮瘤胃外流速度分别为3.40,2.68,2.25,2.18%/h。精饲料和优质牧草在狍瘤胃的降解率高于粗饲料,表明狍对这些粗饲料的利用率较低,生产实践中应限量饲喂。玉米面、豆粕、紫花苜蓿、玉米青贮、菊芋叶、高粱、青柞叶、草木樨的DMD分别为62.15%,58.21%,57.22%,26.29%,54.23%,61.98%,40.75%,55.89%;CPD分别为67.28%,68.24%,66.15%,34.23%,65.23%,40.09%,37.13%,54.47%;OMD分别为70.01%,70.14%,66.49%,34.47%,67.57%,58.53%,40.41%,57.55%。
This paper reports the preliminary evaluation of the nutritive value of commonly used feeds for roe deer, using the nylon bag technique. The outflow rate（kp）from rumen was measured for 2 grain degree of 4 kinds of representative feeds. The 8 kinds of commonly used feeds were analyzed for their dry matter（DMD）, protein（CPD）and organic matter （OMD）degradability in the rumen of roe deer. The results show that： The outflow rate from rumen of different feeds and different grain degrees of feeds is different. The outflow rate from rumen of the similar character and similar grain of different feeds is similar. The bigger the grain, the slower the outflow rate from rumen of the same feed. The outflow rate from rumen of bean cake, corn, oak leaf, corn silage is 3.40,2.68,2.25,2.18 %/h respectively. The degradability of the cereal and nice herbages in the rumen of roe deer is higher than fodders. It shows that roe deer cannot fully utilize fodders. So the quantity of fodders should be limited in practice. The DMD of corn, bean cake, alfalfa, corn silage,jerusalem artichoke leaf, sorghum, oak leaf and melilot is 62.15 % , 58.21% ,57.22% ,26.29% ,54.23% ,61.98% ,40.75 % ,55.89% respectively, the CPD is 67.28%, 68.24%, 66.15%, 34.23%, 65.23%, 40.09%, 37.13%, 54.47% respectively, the OMD is 70.01% ,70.14% ,66.49% ,34.47% ,67.57 % ,58.53% ,40.41% ,57.55% respectively.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2010年第1期95-99,共5页
Journal of Jilin Agricultural University
基金
吉林省科技发展计划项目(20010230)
关键词
狍
饲料
瘤胃外流速度
瘤胃降解率
roe deer
feeds
outflow rate from rumen
degradability in the rumen
