饲粮粗蛋白质水平对麝鼠泌香性能的影响  

Effects of Dietary Crude Protein Levels on Secretion Performance in Muskrats

作　　者：马茹月 方远晶 王颖 杨钦麟 曾德军 竭航 宋代军[1] MA Ruyue;FANG Yuanjing;WANG Ying;YANG Qinlin;ZENG Dejun;JIE Hang;SONG Daijun(College of Animal Science and Technology,Southwest University,Chongqing 400716,China;Chongqing Institute of Medicinal Plant Cultivation,Chongqing 408435,China)

机构地区：[1]西南大学动物科学技术学院,重庆400716 [2]重庆药物种植研究所,重庆408435

出　　处：《动物营养学报》2023年第12期8001-8012,共12页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：重庆市技术创新与应用发展专项(cstc2019jscx-dxwtBX0021)。

摘　　要：为探究饲粮不同粗蛋白质(CP)水平对麝鼠泌香性能的影响,试验选取1周岁健康麝鼠60只,随机分为5组(每组6个重复,每个重复雌、雄麝鼠各1只,仅对雄性麝鼠取样),分别饲喂CP水平为16%、18%、20%、22%和24%的饲粮。预试期10 d,正试期73 d。结果表明:1)试验第12天取香时,22%组麝鼠泌香量最高,24%组麝鼠泌香量最低,且显著低于18%、20%和22%组(P<0.05);试验第36、63天取香时,22%组麝鼠泌香量显著高于其他组(P<0.05),其他各组之间差异不显著(P>0.05)。随着饲粮CP水平的提高,18%和20%组麝鼠总泌香量有所上升,22%组麝鼠总泌香量最高,且显著高于其他组(P<0.05);当饲粮CP水平进一步提高到24%时,麝鼠总泌香量开始下降且低于其他试验组,但差异不显著(P>0.05)。2)各组香液水分含量差异不显著(P>0.05),22%组香液中环十五烷酮含量显著高于其他组(P<0.05),24%组香液中环十五烷酮含量最低。3)血液中睾酮(T)和雌二醇(E2)的含量随饲粮CP水平提高有上升趋势,且20%、22%、24%组血清T和E2的含量显著高于16%组(P<0.05)。4)16%组麝鼠血清中尿素氮(UN)的含量最低且显著低于其他组(P<0.05),22%组麝鼠血清中UN的含量最高,显著高于20%组(P<0.05);血清总蛋白(TP)含量在24%组最低,显著低于其他组(P<0.05);血清白蛋白(ALB)含量在16%组最低,显著低于其他组(P<0.05),20%组最高且显著高于16%和24%组(P<0.05)。由此可见,饲粮CP水平会影响麝鼠的泌香性能,当饲粮CP水平为22%时,麝鼠的泌香量最多、产香品质较好。To investigate the effects of different CP levels on the secretion performance of muskrats,60 one-year-old muskrats were randomly divided into 5 groups(6 replicates per group,1 male and 1 female muskrat per replicate,only male muskrats were sampled),fed diets with CP levels of 16%,18%,20%,22%and 24%,for a pre-feeding period of 10 days and a trial period of 73 days.The results showed as follows:1)on the 12th day of the experiment,the fragrance production of muskrat in 22%group was the highest,and the fragrance production of muskrat in 24%group was the lowest,and it was significantly lower than that in 18%,20%and 22%groups(P<0.05).On the 36th and 63rd day of the experiment,the fragrance production of muskrat in 22%group was significantly higher than that in other groups(P<0.05),but there was no significant difference among other groups(P>0.05).With the increase of dietary CP level,the total fragrance production of muskrats in 18%and 20%groups was increased,and the total fragrance production of muskrats in 22%group was the highest,and significantly higher than that in other groups(P<0.05).When dietary CP level was further increased to 24%,the total fragrance production of muskrats began to decrease and was lower than that in other experimental groups,but the difference was not significant(P>0.05).2)There was no significant difference in moisture content of fragrance liquid between groups(P>0.05),but the content of cyclopentadecanone in fragrance liquid in 22%group was significantly higher than that in other groups(P<0.05),the lowest content was in 24%group.3)The contents of blood testosterone and estradiol showed an upward trend with increasing dietary CP level,and the contents of testosterone and estradiol in 20%,22%and 24%groups were significantly higher than those in 16%group(P<0.05).4)The serum urea nitrogen(UN)content in 16%group was the lowest and significantly lower than that in other groups(P<0.05),and the serum UN content in 22%group was the highest,and significantly higher than that in 20%group(P<0.05).The

关 键 词：麝鼠 泌香性能 性激素 蛋白质代谢 

分 类 号：S816[农业科学—饲料科学]