动物营养学报 >

2019 , Vol. 31 >Issue 12: 5655 - 5663

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.12.031

特种经济动物营养 Special economic animal nutrition

饲粮维生素A添加水平对育成期雄性蓝狐生长性能、营养物质消化率、氮代谢及血清生化指标的影响

  • 杨雅涵 ,
  • 张婷 ,
  • 张铁涛 ,
  • 鲍坤 ,
  • 刘晗璐 ,
  • 王卓 ,
  • 王凯英 ,
  • 李光玉
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  • 中国农业科学院特产研究所, 长春 130112
杨雅涵(1987-),女,河北保定人,助理研究员,硕士,从事特种动物营养与饲养的研究。E-mail:yangyahan@caas.cn

收稿日期: 2019-05-23

  网络出版日期: 2019-12-13

基金资助

中国农业科学院科技创新工程（CAAS-ASTIP-2018-ISAPS）

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Effects of Dietary Vitamin A Supplemental Level on Growth Performance, Nutrient Digestibility, Nitrogen Metabolism and Serum Biochemical Indexes of Blue Foxes during Growing Period

  • YANG Yahan ,
  • ZHANG Ting ,
  • ZHANG Tietao ,
  • BAO Kun ,
  • LIU Hanlu ,
  • WANG Zhuo ,
  • WANG Kaiying ,
  • LI Guangyu
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  • Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China

Received date: 2019-05-23

  Online published: 2019-12-13

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摘要

本试验旨在探讨饲粮维生素A添加水平对育成期雄性蓝狐生长性能、营养物质消化率、氮代谢及血清生化指标的影响。采用单因素试验设计，选择90只健康雄性蓝狐，随机分成6组，每组15个重复，每个重复1只。各组饲粮以干物质基础的维生素A添加水平分别为0（Ⅰ组）、5 000（Ⅱ组）、10 000（Ⅲ组）、15 000（Ⅳ组）、20 000（Ⅴ组）和25 000 IU/kg （Ⅵ组）。预试期7 d，正试期60 d。结果表明：1）饲粮维生素A添加水平对蓝狐末重、平均日增重、平均日采食量和料重比均无显著影响（P>0.05）。2）饲粮维生素A添加水平对蓝狐干物质采食量、干物质排出量、干物质消化率和蛋白质消化率均无显著影响（P>0.05）。Ⅲ组脂肪消化率显著高于Ⅰ、Ⅳ、Ⅴ和Ⅵ组（P<0.05）。3）饲粮维生素A添加水平对蓝狐食入氮、粪氮、尿氮、氮沉积、净蛋白质利用率和蛋白质生物学价值均无显著影响（P>0.05）。Ⅴ组血清尿素氮含量显著低于Ⅰ、Ⅲ、Ⅳ和Ⅵ组（P<0.05）。4）饲粮维生素A添加水平对蓝狐血清维生素D含量和丙氨酸氨基转移酶活性无显著影响（P>0.05）。Ⅵ组血清维生素A含量显著高于其他各组（P<0.05），Ⅱ组血清天冬氨酸氨基转移酶活性显著高于Ⅲ和Ⅳ组（P<0.05），Ⅰ、Ⅱ、Ⅲ和Ⅳ组血清低密度脂蛋白含量显著低于Ⅴ和Ⅵ组（P<0.05），Ⅰ、Ⅱ、Ⅲ和Ⅳ组血清高密度脂蛋白含量显著高于Ⅵ组（P<0.05）。Ⅰ、Ⅱ、Ⅲ组血清甘油三酯含量显著高于Ⅳ组（P<0.05），显著低于Ⅴ和Ⅵ组（P<0.05）；Ⅰ组血清总胆固醇含量显著高于Ⅵ组（P<0.05），显著低于Ⅱ、Ⅲ和Ⅳ组（P<0.05）。由此可见，在本试验条件下，饲粮添加5 000 IU/kg以上的维生素A对育成期蓝狐生长性能无显著影响，饲粮添加10 000 IU/kg维生素A显著提高了脂肪消化率。饲粮维生素A添加水平对育成期蓝狐血清生化指标有一定的影响。

关键词： 蓝狐; 维生素A; 生长性能; 营养物质消化率; 血清生化指标

本文引用格式

杨雅涵 , 张婷 , 张铁涛 , 鲍坤 , 刘晗璐 , 王卓 , 王凯英 , 李光玉 . 饲粮维生素A添加水平对育成期雄性蓝狐生长性能、营养物质消化率、氮代谢及血清生化指标的影响[J]. 动物营养学报, 2019 , 31(12) : 5655 -5663 . DOI: 10.3969/j.issn.1006-267x.2019.12.031

Abstract

The aim of study was to investigate the effects of dietary vitamin A supplemental level on growth performance, nutrient digestibility, nitrogen metabolism and serum biochemical indexes of blue foxes during growing period. According to a single factor trial design, ninety healthy male blue foxes were randomly divided into 6 groups with 15 replicates in each group and 1 fox in each replicate. Foxes in the 6 groups were fed experimental diets which the vitamin A supplemental levels were 0 (group Ⅰ), 5 000 (group Ⅱ), 10 000 (group Ⅲ), 15 000 (group Ⅳ), 20 000 (group Ⅴ) and 25 000 IU/kg (group Ⅵ) based on dry matter, respectively. The experiment included 7 days adaptation period and 60 days test period. The results showed as follows:1) dietary vitamin A supplemental level had no significant effects on the final weight, average daily gain, average daily feed intake and feed to gain ratio of blue foxes (P>0.05). 2) Dietary vitamin A supplemental level had no significant effects on the dry matter intake, dry matter output, dry matter digestibility and protein digestibility of blue foxes (P>0.05). The fat digestibility of group Ⅲ was significantly higher than that of groups Ⅰ, Ⅳ, Ⅴ and Ⅵ (P<0.05). 3) Dietary vitamin A supplemental level had no significant effects on the nitrogen intake, fecal nitrogen, urine nitrogen, nitrogen deposition, net protein utilization and biological value of protein of blue foxes (P>0.05). The serum urea nitrogen content of group Ⅴ was significantly lower than that of groups Ⅰ, Ⅲ, Ⅳ and Ⅵ (P<0.05). 4) Dietary vitamin A supplemental level had no significant effects on the vitamin D content and alanine aminotransferase activity in serum of blue foxes (P>0.05). The serum vitamin A content of group Ⅵ was significantly higher than that of other groups (P<0.05), the serum aspartate aminotransferase activity of group Ⅱ was significantly higher than that of groups Ⅲ and Ⅳ (P<0.05), the serum low density lipoprotein content of groups Ⅰ, Ⅱ, Ⅲ and Ⅳ was significantly lower than that of groups Ⅴ and Ⅵ (P<0.05), and the serum high density lipoprotein content of groups Ⅰ, Ⅱ, Ⅲ and Ⅳ was significantly higher than that of group Ⅵ (P<0.05). The serum triglyceride content of groups Ⅰ, Ⅱ and Ⅲ was significantly higher than that of group Ⅳ (P<0.05), and significantly lower than that of groups Ⅴ and Ⅵ (P<0.05); the serum total cholesterol content of group Ⅰ was significantly higher than that of group Ⅵ (P<0.05), and significantly lower than that of groups Ⅱ, Ⅲ and Ⅳ (P<0.05). In conclusion, under this experimental conditions, dietary supplementation of vitamin A above 5 000 IU/kg have no significant effects on the growth performance of blue foxes during growing period, dietary supplementation of 10 000 IU/kg vitamin A significantly increase the fat digestibility. Dietary vitamin A supplemental level have a certain effect on serum biochemical indexes of blue foxes during growing period.

Key words： blue foxes; vitamin A; growth performance; nutrient digestibility; serum biochemical indexes

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