饲粮n-6/n-3多不饱和脂肪酸配比对育成期雄性蓝狐生长性能、营养物质消化率及氮代谢的影响  

Dietary Ratio of n-6/n-3 Polyunsaturated Fatty Acid Affects Growing Performance,Nutrient Digestibility and Nitrogen Metabolism of Male Blue Foxes during Growth Period

作　　者：钟伟[1] 罗靖[1] 张婷[1] 孙伟丽[1] 刘晗璐[1] 孙旭阳[1] 李光玉[1] 

机构地区：[1]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实验室,长春130112

出　　处：《动物营养学报》2016年第10期3199-3206,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：吉林省自然科学基金项目(20140101033JC);中国农业科学院创新工程项目

摘　　要：本试验旨在研究饲粮n-6/n-3多不饱和脂肪酸配比对育成期雄性蓝狐生长性能、营养物质消化率及氮代谢的影响。试验选取48只102日龄、平均体重为（2 370±24）g的健康雄性蓝狐,随机分成4组,每组12个重复,每个重复1只蓝狐。各组饲粮除油脂组成不同外,其他原料均一致。Ⅰ组饲粮中添加鱼油和豆油,n-6/n-3为3.00;Ⅱ组饲粮中添加鱼油和玉米油,n-6/n-3为6.03;Ⅲ组饲粮中添加鱼油和玉米油,n-6/n-3为9.01;Ⅳ组饲粮中添加玉米油和豆油,n-6/n-3为18.04。试验预试期7 d,试验期46 d。结果表明：1）Ⅲ组和Ⅳ组125日龄体重显著高于Ⅱ组（P〈0.05）,Ⅰ组、Ⅲ组和Ⅳ组102-125日龄平均日增重均极显著高于Ⅱ组（P〈0.01）,Ⅰ组、Ⅲ组和Ⅳ组102-125日龄料重比均显著低于Ⅱ组（P〈0.05）。饲粮n-6/n-3 PUFA配比对126-147日龄生长性能无显著影响（P〉0.05）。2）Ⅰ组和Ⅲ组干物质采食量显著高于Ⅱ组（P〈0.05）,Ⅰ组、Ⅲ组和Ⅳ组干物质消化率显著高于Ⅱ组（P〈0.05）,Ⅲ组和Ⅳ组粗蛋白质消化率极显著高于Ⅱ组（P〈0.01）,Ⅲ组和Ⅳ组总能消化率显著高于Ⅱ组（P〈0.05）,Ⅲ组粗脂肪消化率显著高于Ⅱ组（P〈0.05）。饲粮n-6/n-3 PUFA配比对碳水化合物消化率无显著影响（P〉0.05）。3）Ⅰ组和Ⅲ组氮采食量极显著高于Ⅱ组和Ⅳ组（P〈0.01）,Ⅳ组粪氮含量显著低于Ⅰ组和Ⅱ组（P〈0.05）。饲粮n-6/n-3 PUFA配比对尿氮含量、氮沉积、净蛋白质利用率和蛋白质生物学价值无显著影响（P〉0.05）。综上所述,当饲粮n-6/n-3 PUFA配比为9.01或18.04时,蓝狐可获得较优的生长性能,但从饲料成本和贮存稳定性考虑,玉米油与豆油混合组更佳。The aim of this trial was to investigate the effects of dietary ratio of n-6/n-3 polyunsaturated fatty acid（PUFA） on growing performance,nutrient digestibility and nitrogen metabolism of male blue foxes during growth period.Forty-eight 102-day-old male blue foxes with average body weight of（2 370 ± 24） g were selected and assigned into 4 groups with 12 replicates in each group and 1 blue fox in each replicate.Except the composition and proportion of oil,the other ingredients in diets were the same.Diet of group Ⅰ supplemented with fish oil and soybean oil,n-6/n-3 = 3.00; diet of group Ⅱ supplemented with fish oil and corn oil,n-6/n-3 = 6.03; diet of group Ⅲ supplemented with fish oil and corn oil,n-6/n-3 = 9.01; diet of group Ⅳ supplemented with soybean oil and corn oil,n-6/n-3 = 18.04.The adjustment period lasted for 7 days,and the experimental period lasted for 46 days.The results showed as follows： 1） the body weight of groups Ⅲ and Ⅳ at 125 days of age was significantly higher than that of group Ⅱ（P〈0.05）,the average daily gain of groups Ⅰ,Ⅲ and Ⅳ at 102 to 125 days of age was significantly higher than that of group Ⅱ（P〈0.01）,the ratio of feed to gain of groups Ⅰ,Ⅲ and Ⅳ at 102 to 125 days of age was significantly lower than that of group Ⅱ（P〈0.05）.Dietary ratio of n-6/n-3 PUFA had no effects on growth performance at 126 to 147 days of age（P〉0.05）.2） The dry matter intake of groups Ⅰ and Ⅲ was significantly higher than that of group Ⅱ（P〈0.05）,the dry matter digestibility of groups Ⅰ,Ⅲ and Ⅳ was significantly higher than that of group Ⅱ（P〈0.05）,the crude protein digestibility of groups Ⅲ and Ⅳ was significantly higher than that of group Ⅱ（P〈0.01）,the gross energy digestibility of groups Ⅲ and Ⅳ was significantly higher than that of group Ⅱ（P〈0.05）,the ether extract digestibility of group Ⅲ was significantly higher than that of group Ⅱ（P〈0.05）.Dietary ratio of n-6/n-3 PUFA had no effe

关 键 词：n-6/n-3 多不饱和脂肪酸 蓝狐 生长性能 消化率 氮代谢 

分 类 号：S865.23[农业科学—野生动物驯养]