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Effects of Dietary Arginine Supplemental Level on Performance, Nutrient Digestibility and Nitrogen Metabolism of Female Blue Foxes during Fur Development Period

  • SUN Haoran ,
  • ZHANG Tietao ,
  • WANG Xiaoxu ,
  • LIU Zhi ,
  • FAN Yanyan ,
  • ZHANG Ting ,
  • LI Guangyu
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  • 1. State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Sciences, Chinese Academy of Agriculture Sciences, Changchun 130112, China;
    2. Institute of Feed Research, Chinese Academy of Agriculture Sciences, Beijing 100081, China

Received date: 2015-11-04

  Online published: 2016-04-11

Abstract

This experiment was conducted to investigate the effects of dietary arginine supplemental level on performance, nutrient digestibility and nitrogen metabolism of female blue foxes in fur development period. Sixty female blue foxes aged 120 days with similar body weight were randomly divided into 6 groups with 10 replicates per group and 1 fox per replicate. Six groups were fed basic diets supplemented with 0(group Ⅰ), 0.2%(group Ⅱ), 0.4%(group Ⅲ), 0.6%(group Ⅳ), 0.8%(group Ⅴ) and 1.0%(group Ⅵ) arginine, respectively. The pretest period lasted for 7 days and the trial period lasted for 80 days. The results showed as follows:1) the average daily gain of blue foxes in group Ⅳ was significantly higher than that in other groups(P<0.01), the body length and fur length in group Ⅳ were increased 1.42% and 1.26% compared with group Ⅰ(P>0.05), the feed to gain in group Ⅳ was significantly lower than that in group Ⅰ(P<0.01). The average daily feed intake of blue foxes in group Ⅲ was significantly lower than that in group Ⅰ(P<0.05). 2) Dietary arginine supplemental level had significant effect on fat digestibility of blue foxes(P<0.01), and the fat digestibility was increased with the increasing of dietary supplemental level. The dry matter digestibility in group Ⅳ was significantly higher than that in groups Ⅰ, Ⅱ and Ⅲ(P<0.01). Dietary arginine supplemental level had no effects on protein digestibility and carbohydrate digestibility(P>0.05). 3) The nitrogen intake of blue foxes in group Ⅲ was significantly lower than that in other groups except group Ⅳ(P<0.05). The content of fecal nitrogen and urea nitrogen in group Ⅳ was the lowest, however, the nitrogen retention, net protein utilization, biological value of protein and protein efficiency ratio in group Ⅳ were the highest. It is included that diet supplemented with 0.6% arginine(dietary total arginine level is 2.04%) can promote average daily gain and reduce feed to gain for female blue foxes during fur development period.

Cite this article

SUN Haoran , ZHANG Tietao , WANG Xiaoxu , LIU Zhi , FAN Yanyan , ZHANG Ting , LI Guangyu . Effects of Dietary Arginine Supplemental Level on Performance, Nutrient Digestibility and Nitrogen Metabolism of Female Blue Foxes during Fur Development Period[J]. Chinese Journal of Animal Nutrition, 2016 , 28(4) : 1267 -1273 . DOI: 10.3969/j.issn.1006-267x.2016.04.039

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