动物营养学报 >

2016 , Vol. 28 >Issue 10: 3199 - 3206

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.10.023

研究简报 Short Communications

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

  • 钟伟 ,
  • 罗靖 ,
  • 张婷 ,
  • 孙伟丽 ,
  • 刘晗璐 ,
  • 孙旭阳 ,
  • 李光玉
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  • 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

收稿日期: 2016-04-05

  网络出版日期: 2016-10-17

基金资助

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

收起

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

  • ZHONG Wei ,
  • LUO Jing ,
  • ZHANG Ting ,
  • SUN Weili ,
  • LIU Hanlu ,
  • SUN Xuyang ,
  • LI Guangyu
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  • State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Science, Chinese Academy of Agriculture Sciences, Changchun 130112, China

Received date: 2016-04-05

  Online published: 2016-10-17

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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。

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

本文引用格式

钟伟 , 罗靖 , 张婷 , 孙伟丽 , 刘晗璐 , 孙旭阳 , 李光玉 . 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[J]. 动物营养学报, 2016 , 28(10) : 3199 -3206 . DOI: 10.3969/j.issn.1006-267x.2016.10.023

Abstract

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 effects on carbohydrate digestibility (P>0.05). 3) The intake of nitrogen of groups Ⅰ and Ⅲ was significantly higher than that of groups Ⅱ and Ⅳ (P<0.01), the fecal nitrogen content of groups Ⅳ was significantly lower than that of groups Ⅰ and Ⅱ (P<0.05). Dietary ratio of n-6/n-3 PUFA had no effects on urine nitrogen content, retention nitrogen, net protein utilization and biological value of protein (P>0.05). In conclusion, when dietary ratio of n-6/n-3 PUFA is 9.01 or 18.04, the blue fox can get better growth performance, however, considering feed cost and storage stability, the mixture of corn oil and soybean oil is more beneficial.

Key words： n-6/n-3; PUFA; blue fox; growth performance; digestibility; nitrogen metabolism

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