饲粮锰水平对育成期乌苏里貉生长性能、营养物质消化率及氮代谢的影响  

Effects of Dietary Manganese Level on Growth Performance,Nutrient Digestibility and Nitrogen Metabolism of Growing Wusuli Raccoon Dog (Nyctereutes procyonoides)

作　　者：鲍坤[1] 李光玉[1] 刘佰阳[1] 徐超[1] 岳志刚[1] 赵家平[1] 

机构地区：[1]中国农业科学院特产研究所,特种经济动物分子生物学国家重点实验室,长春130112

出　　处：《动物营养学报》2014年第7期2003-2008,共6页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：中国农业科学院基本科研业务费(0032011028);吉林省科技支撑计划(20130206029NY)

摘　　要：本试验旨在研究饲粮锰水平对育成期乌苏里貉生长性能、营养物质消化率及氮代谢的影响。选择(60±2)日龄健康雄性乌苏里貉90只,随机分成6组,每组15个重复,每个重复1只貉。6组貉分别饲喂锰添加水平为0(Ⅰ组)、40(Ⅱ组)、80(Ⅲ组)、120(Ⅳ组)、200(Ⅴ组)和400 mg/kg(Ⅵ组)的试验饲粮。预试期5 d,正试期62 d。结果表明:1)Ⅱ组的末重和平均日增重均显著高于Ⅰ组(P<0.05);Ⅱ组的料重比显著低于Ⅰ组(P<0.05)。2)Ⅱ、Ⅳ和Ⅴ组的干物质消化率显著高于Ⅰ组(P<0.05);Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组的粗蛋白质消化率均高于Ⅰ组(P>0.05);Ⅴ组的粗脂肪消化率显著高于Ⅰ组(P<0.05)。3)Ⅱ、Ⅲ、Ⅳ组的食入氮显著高于Ⅰ组(P<0.05);Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组氮沉积、净蛋白质利用率及蛋白质生物学价值均高于Ⅰ组(P>0.05)。综合本试验育成期貉的生长性能、营养物质消化率及氮代谢情况,建议育成期貉饲粮锰添加水平为40 mg/kg(饲粮总锰水平为62.23 mg/kg)。This experiment was conducted to study the effects of dietary manganese level on growth performance,nutrient digestibility and nitrogen metabolism of growing Wusuli raccoon dog （Nyctereutes procyonoides）.Ninety healthy male raccoon dogs at the age of （60±2） days were randomly divided into 6 groups with 15 replicates per group and 1 raccoon dog per replicate.The raccoon dogs in the 6 groups were fed experimental diets with manganese supplemental levels of 0 （group Ⅰ）,40 （group Ⅱ）,80 （group Ⅲ）,120 （group Ⅳ）,200 （group Ⅴ） and 400 mg/kg （group Ⅵ）,respectively.The pre-test period lasted for 5 days and the trial period lasted for 62 days.The results showed as follows：1） the final weight and average daily gain in group Ⅱ were significantly higher than those in group Ⅰ （P＜0.05）,while the ratio of feed to gain in group Ⅱ was significantly lower than that in group Ⅰ （P＜0.05）.2） The dry matter intake in the groups Ⅱ,Ⅳ and Ⅴ was significantly higher than that in group Ⅰ （P＜0.05）.The crude protein digestibility in groups Ⅱ,Ⅲ,Ⅳ,Ⅴ and Ⅵ was higher than that in group Ⅰ （P＞0.05）.The ether extract digestibility in group Ⅴ was significantly higher than that in group Ⅰ （P＜0.05）.3） The nitrogen intake in groups Ⅱ,Ⅲ and Ⅳ was significantly higher than that in group Ⅰ （P＜0.05）.The nitrogen deposition,net protein utilization and biological value of protein in groups Ⅱ,Ⅲ,Ⅳ,Ⅴ and Ⅵ were higher than those in group Ⅰ （P＞0.05）.Under this study condition,based on comprehensive consideration of the growth performance,nutrient digestibility and nitrogen metabolism of growing raccoon dog,it is suggested that the optimal supplemental level of manganese in the basal diet is 40 mg/kg for growing raccoon dog,total level of manganese in the diet is 62.23 mg/kg.

关 键 词：育成期 貉 锰 生长性能 营养物质消化率 氮代谢 

分 类 号：S816.71[农业科学—饲料科学]