不同水平脂肪对冬毛期蓝狐生产性能及消化代谢的影响  

Effect of Different Fat Levels on the Performance and Digestive Metabolism of the Furring Blue Fox

作　　者：刘佰阳[1] 李光玉[1] 张海华[1] 李丹丽[1] 钟伟[1] 王凯英[1] 常忠娟[1] 

机构地区：[1]中国农业科学院特产研究所,吉林132109

出　　处：《经济动物学报》2008年第3期131-137,共7页Journal of Economic Animal

基　　金：吉林省杰出青年项目(20060108);吉林省农业重点项目(20060214)

摘　　要：采用单因素随机试验设计,选择冬毛期蓝狐72只,随机分成4组(Ⅰ、Ⅱ、Ⅲ、Ⅳ组),公母各半,分别饲喂在基础日粮中添加1%、4%、7%和10%豆油的4种试验饲粮,以探讨不同水平脂肪对冬毛期蓝狐生产性能和消化代谢的影响。结果表明:不同水平脂肪对日采食量和干物质消化率影响差异不显著(P>0.05);Ⅱ组的日增重高于其他组,Ⅱ组公狐的日增重显著高于Ⅲ组(P<0.05);Ⅱ组的料肉比低于其他组,其中Ⅱ组母狐的料肉比显著低于其他组(P<0.05)。公狐Ⅱ组的日食入氮显著高于Ⅰ组(P<0.05);日粪氮排出量各组间差异不显著(P>0.05);Ⅳ组公狐和母狐的日尿氮排出量分别显著(P<0.05)和极显著(P<0.01)高于其他组;Ⅱ组的日沉积氮、氮沉积率、氮表观消化率和氮生物学效价高于其他组,并且日沉积氮、氮沉积率和氮生物学效价显著(P<0.05)或者极显著(P<0.01)高于Ⅳ组。随着脂肪添加量的增加,蓝狐的食入脂肪量、脂肪消化率和可消化脂肪量也随之增加,达到了显著(P<0.05)或者极显著(P<0.01)的差异。母狐Ⅰ组的总胆固醇极显著地低于Ⅱ组和Ⅲ组(P<0.01);甘油三酯以Ⅲ组最低,公狐Ⅲ组的甘油三酯显著低于Ⅰ组和Ⅳ组(P<0.05),母狐Ⅲ组极显著低于其他组(P<0.01);对高密度脂蛋白胆固醇无影响(P>0.05);随着脂肪水平的提高,血清总蛋白呈现先升后降,公狐以Ⅱ组最高,Ⅰ组最低,两组之间差异极显著(P<0.01)。不同水平脂肪对冬毛期蓝狐的体长、干皮长、针毛长度和针毛直径的影响差异不显著(P>0.05),母狐Ⅱ组的绒毛长度极显著地高于Ⅳ组(P<0.01),公狐Ⅰ组的绒毛直径显著地高于Ⅲ组(P<0.05)。综合各项试验指标,冬毛期蓝狐日粮中添加4%的豆油效果较好。One factor experimental design was used in this study. 72 healthy furring blue foxes were randomly divided into four groups（group Ⅰ ,group Ⅱ ,group Ⅲ and group Ⅳ ） which the number of male and female were equal. Different groups were respectively provided with diets supplementing 1% ,4% ,7% andl0% soybean oil. The results showed that the different fat levels had no significant effect on feed intake and DM digestibility （ P 〉 0.05）. Body daily gain of group Ⅱ was lower than that of other three groups and body weight gain of male foxes was significantly hi.gher than that of group Ⅲ （ P 〈 0.05）. Feed conversion rate of group Ⅱ was lower than that of other three groups , especially female foxes in this group （ P 〈 0.05）. Daily N intake of male foxes in group Ⅱ was significant higher than that in group Ⅰ （ P 〈 0.05）. Daily feces nitrogen was not significant different between groups above （ P 〉 0.05）. Daily urine nitrogen in groupⅣ of male and female were significantly （p 〈 0.05） or very significantly （p 〈 0.01） higher than that in other groups separately. Daily N retention, N retention rate, N apparent digestibility and biologieal value of nitrogen were significantly higher （ p 〈 0.05） or very significantly （ p 〈 0.01 ） higher than that in groupⅣ. With supplement fat increasing, fat intake, fat digestibility and digestive fat increased significantly （ p 〈 0.05） or very significantly （ p 〈 0.01 ）. Total cholesterol of male fox in group Ⅰ was very significantly lower than that one in group Ⅱ and goup Ⅲ （P 〈 0.05）in different groups. Triaeylglyceerol in group Ⅲ was lower than that one in other groups and the male foxes in this group of it was significantly lower than that one in group Ⅰ and Ⅳ, the female in group Ⅲ of it was very signifiantly lower than that one in other groups. HDL was not significant as different level fat supplementing（ p 〉 0.05）. With fat supplement increasing, serum total pro

关 键 词：蓝狐 豆油 生产性能 消化代谢 

分 类 号：S864.4[农业科学—野生动物驯养]