检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]怀化学院生物工程系,湖南怀化418000 [2]湖南农业大学动物科技学院,湖南长沙410128
出 处:《怀化学院学报》2005年第5期92-95,共4页Journal of Huaihua University
摘 要:为国内地方鸡营养研究,特别是雪峰乌骨鸡的营养研究填补空白,笔者用500羽1日龄的雪峰乌骨鸡研究其生长前期蛋氨酸的适宜水平.在满足其他营养素的条件下,在基础日粮(玉米-豆粕型)中分别添加合成蛋氨酸0.00%,0.06%,0.12%,0.18%,0.24%,配成5组饲粮,分别饲养五组试鸡.测定生长性能指标和血清尿素氮、蛋氨酸、天冬氨酸、谷氨酸含量.其结果表明,饲粮蛋氨酸水平对雪峰乌骨鸡累计生长、相对生长率、日增重、饲料效率有显著影响;对血清尿素氮含量以及血清蛋氨酸、天冬氨酸、谷氨酸含量有显著影响.因此在代谢能为12.32 MJ/kg、粗蛋白质为21.00%的营养水平下,建议雪峰乌骨鸡生长前期蛋氨酸适宜水平为0.48%.For local chickens especial Xuefeng black-bone chickens nutritional research pad blank,a total of 500 Xuefeng black-bone chickens (1 day-old) were used to investigated the methionine requirement. Meeting the other nutrients requirement other than methionine, the diets (meal-corn) supplemented with different level of methionine (0. 00%, 0.06%,0.12%,0.18%,0.24%) were assigned to feed the treetment birds. Mensurate performance traits and serum urea nitrogen and serum methionine and serum aspartic acid and serum glutamic acid, the main results were as follow. The diets supplemented with different level of methionine had significant effect on accumulative growth and relative growth ratio and daily gain and feed efficiency and serum urea nitrogen and serum methionine and serum aspartic acid and serum glutamic acid.Under ME: 12.32MJ/kg and CP: 21.00%, it is suggested that optimum methionine level in Xueteng black-bone chickens is 0.48% for the early growth period.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:52.15.133.37