Dietary Fat Levels Affect Growth Performance, Body Fat Deposition and Serum Biochemical Parameters of Growing Blue Foxes (Alopex lagopus)

GENG Yeye,ZHANG Tietao,ZHANG Zhiqiang,GAO Xiuhua,YANG Fuhe,XING Xiumei

doi:10.3969/j.issn.1006-267x.2011.09.025

2011 , Vol. 23 >Issue 09: 1637 - 1646

DOI: https://doi.org/10.3969/j.issn.1006-267x.2011.09.025

Short Communications

Dietary Fat Levels Affect Growth Performance, Body Fat Deposition and Serum Biochemical Parameters of Growing Blue Foxes (Alopex lagopus)

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(1. Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; 2. Institute of
Wild Economic Animals and Plants, Chinese Academy of Agricultural Sciences, Jilin 132109, China;
3. State Key Lab for Molecular Biology of Special Economic Animals, Jilin 132109, China）

Online published: 2011-09-28

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Abstract

The trial was conducted to evaluate the effect of dietary fat levels on growth, body fat deposition, and serum biochemical parameters of growing blue foxes (Alopex lagopus). Based on age and initial body weight, a total of 64 blue foxes were randomly assigned into 4 groups with 8 replicates per group and 2 foxes per replicate (half male and half female). Foxes in four groups were fed with experimental diets containing 12%, 26%, 40% or 54% fat, respectively. The experiment included an adaptation period for 10 days and a test period for 156 days. The results showed as follows: with the increasing dietary fat levels, daily gain weight of growing blue foxes was firstly increased and then decreased, while the contents of fat and glucose in serum and visceral fat percentage (VFP) were improved at different stages. When the dietary fat level was 54%, hepatic fat percentage (HFP) and hepatic somatic index (HSI) were significantly higher than those in other groups (P<0.05). The correlation between serum biochemical parameters and body fat deposition in females was higher than that in males. Serum triglyceride and high-density lipoprotein cholesterol (HDL-C) were positively correlated with LFP, HSI and VFP (P<0.05). On the basis of these results, it is concluded that blue foxes have higher tolerance to fat, but the dietary fat level of growing blue foxes should be less than 40%. Males fed diet with 26% fat level and females fed diet with 40% fat level have the greatest growth performance.［Chinese Journal of Animal Nutrition, 2011, 23（9）：1637 -1646］

Key words： blue foxes; dietary fat level; growth performance; fat deposition; serum biochemical parameters

Cite this article

GENG Yeye,ZHANG Tietao,ZHANG Zhiqiang,GAO Xiuhua,YANG Fuhe,XING Xiumei . Dietary Fat Levels Affect Growth Performance, Body Fat Deposition and Serum Biochemical Parameters of Growing Blue Foxes (Alopex lagopus)[J]. Chinese Journal of Animal Nutrition, 2011 , 23(09) : 1637 -1646 . DOI: 10.3969/j.issn.1006-267x.2011.09.025

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