饲粮L-精氨酸添加水平对育成期水貂生长性能、营养物质消化率及氮代谢的影响  

Effects of Dietary L-Arginine Supplemental Level on Growth Performance,Nutrient Digestibility and Nitrogen Metabolism of Mink during Growing Period

作　　者：万春孟 张铁涛[2] 吴学壮[1] 刘志[1] 郭俊刚[1] 高秀华[1] 杨福合[2] 邢秀梅[2] 岳志刚[2] 

机构地区：[1]中国农业科学院饲料研究所,北京100081 [2]中国农业科学院特产研究所吉林省特种经济动物分子生物学省部共建重点实验室,长春130112

出　　处：《动物营养学报》2015年第8期2607-2613,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家自然资源平台专项"特种经济动物种质资源共享平台"(2005DKA21102)

摘　　要：本试验旨在研究饲粮L-精氨酸添加水平对育成期水貂生长性能、营养物质消化率及氮代谢的影响。选取（60±3）日龄健康雌性水貂70只,随机分成7组,每组10个重复,每个重复1只水貂。7组水貂分别饲喂在基础饲粮（L-精氨酸含量为1.45%）基础上添加0（Ⅰ组）、0.2%（Ⅱ组）、0.4%（Ⅲ组）、0.6%（Ⅳ组）、0.8%（Ⅴ组）、1.0%（Ⅵ组）和1.2%（Ⅶ组）L-精氨酸的试验饲粮。预试期7 d,正试期60 d。结果表明：Ⅲ组的末重、平均日增重和料重比高于其他各组,但差异不显著（P〉0.05）。Ⅲ组的干物质采食量极显著高于Ⅰ组（P〈0.01）,显著高于Ⅱ组和Ⅵ组（P〈0.05）。Ⅲ组的干物质排出量显著高于Ⅰ组和Ⅳ组（P〈0.05）。Ⅳ组的干物质消化率高于其他各组,但差异不显著（P〉0.05）。Ⅳ组的蛋白质消化率显著高于Ⅰ组、Ⅱ组、Ⅲ组、Ⅴ组和Ⅶ组（P〈0.05）。Ⅳ组的脂肪消化率显著高于Ⅴ组、Ⅵ组和Ⅶ组（P〈0.05）。Ⅲ组的食入氮极显著高于Ⅰ组和Ⅱ组（P〈0.01）,显著高于Ⅴ组和Ⅵ组（P〈0.05）。Ⅲ组的粪氮极显著高于Ⅰ组和Ⅳ组（P〈0.01）。Ⅲ组的氮沉积极显著高于Ⅰ组和Ⅵ组（P〈0.01）,显著高于Ⅱ组和Ⅴ组（P〈0.05）。Ⅲ组和Ⅳ组的净蛋白质利用率显著高于Ⅰ组（P〈0.05）。Ⅲ组和Ⅳ组的蛋白质生物学价值显著高于Ⅰ组（P〈0.05）。由此得出,饲粮L-精氨酸添加水平为0.4%~0.6%（L-精氨酸总含量为1.85%~2.05%）时,育成期水貂的生长性能、营养物质消化率、氮沉积、净蛋白质利用率及蛋白质生物学价值较为理想。This study was conducted to study the effects of dietary L-arginine（L-Arg） supplemental level on growth performance,nutrient digestibility and nitrogen metabolism of growing mink.Seventy healthy female mink at the age of 60-day were randomly divided into 7 groups with 10 replicates each and 1 mink per replicate.The mink in 7 groups were fed the basal diet（L-Arg content was 1.45%） supplemented with 0（group Ⅰ）,0.2%（group Ⅱ）,0.4%（group Ⅲ）,0.6%（group Ⅳ）,0.8%（group Ⅴ）,1.0%（group Ⅵ） and 1.2%（group Ⅶ） L-Arg,respectively.The pre-test period lasted for 7 days and the trial lasted for 60 days.The results showed as follows： the final weight,average daily gain and feed/gain of the group Ⅲ were higher than those of the other groups,but the differences were not significant（P〈0.05）.The dry matter（DM） intake of the groupⅢ was extremely significantly higher than that of the group Ⅰ（P〈0.01） and it was significantly higher than that of groups Ⅱ and Ⅵ（P〈0.05）.The DMoutput of the group Ⅲ was significantly higher than that of groups Ⅰ and Ⅳ（P〈0.05）.The DMdigestibility of the group Ⅳ was higher than that of the other groups,but the difference was not significant（P〈0.05）.The protein digestibility of the group Ⅳ was significantly higher than that of groups Ⅰ,Ⅱ,Ⅲ,Ⅴ and Ⅶ（P〈0.05）.The fat digestibility of the group Ⅳ was significantly higher than that of groups Ⅴ,Ⅵ and Ⅶ（P〈0.05）.Nitrogen intake of the group Ⅲ was extremely significantly higher than that of groups Ⅰ and Ⅱ（P〈0.01） and it was significantly higher than that of groups Ⅴand Ⅵ（P〈0.05）.The fecal nitrogen of the group Ⅲ was extremely significantly higher than that of groups Ⅰand Ⅳ（P〈0.01）.The nitrogen deposition of the group Ⅲ was extremely significantly higher than that of groups Ⅰ and Ⅵ（P〈0.01） and it was significantly higher than that of groups Ⅱ and Ⅴ（P〈0.05）.Net protein utilization of grou

关 键 词：育成期 水貂 生长性能 营养物质消化率 氮代谢 

分 类 号：S816[农业科学—饲料科学]