ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (7): 1416-1422.doi: 10.11843/j.issn.0366-6964.2018.07.010

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Effects of Dietary Calcium and Vitamin D3 Levels on Growth Performance, Tibia Development and Viscera Indices of Growing-furring Blue Foxes(male)

XU Yi-nan1, ZHANG Hai-hua1, WANG Jing1, HUO Zi-shuang2, XU Yuan2, WEN Bin2, BAI Xiu-juan2, LI Guang-yu1*   

  1. 1. Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China;
    2. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
  • Received:2017-11-10 Online:2018-07-23 Published:2018-07-19

Abstract:

The aim of this study was to investigate the effects of dietary Ca and vitamin D3levels on growth performance, tibia development and viscera indices of growing-furring blue foxes under the condition of a fixed 1.4/1 ratio of Ca to P. One hundred and thirty-five male blue foxes of 120-day-old were randomly allocated into 9 groups, with 15 blue foxes per group. The 9 treatment diets were supplemented with 0%, 0.4% and 0.8% Ca, and they were supplemented with 1 000, 2 000 and 4 000 IU·kg-1 VD3. The experiment was conducted with a 3×3 factorial design using a basic diet that contained 0.8% Ca and 327 IU·kg-1VD3. The treatment diets contained 0.8%Ca and 1 327 IU·kg-1VD3, 0.8%Ca and 2 327 IU·kg-1VD3, 0.8%Ca and 4 327 IU·kg-1VD3, 1.2%Ca and 1 327 IU·kg-1VD3, 1.2%Ca and 2 327 IU·kg-1VD3, 1.2%Ca and 4 327 IU·kg-1VD3, 1.6%Ca and 1 327 IU·kg-1VD3, 1.6%Ca and 2 327 IU·kg-1VD3, 1.6%Ca and 4 327 IU·kg-1VD3. The test period lasted for 87 days. The growth performance, ingredient percent of tibia and viscera weight were measured, respectively and then we calculated the tibia development parameters and viscera indices of growing-furring blue foxes. The results showed that:1) The final BW and body length of blue foxes significantly decreased with increasing Ca levels(P<0.05). The maximum final BW and body length were in 0%-Ca group. There was no significant difference in final BW, body length and pelt length of blue foxes among different VD3 levels(P>0.05). 2) The Ca dosage added had a linear effect on Ca percent of the tibia(P<0.05). The maximum Ca percent of tibia was in 0.8%-Ca group. The dietary VD3 level had a significant effect on ash percent of tibia(P<0.05). 3) The heart and liver indices of blue foxes linearly decreased with increasing Ca levels(P<0.05). In conclusion,the results of this research indicated that the diet supplementation with 0%Ca and 1 000 IU·kg-1VD3(the diet contained 0.8% Ca and 1 327 IU·kg-1 VD3) could improve the growth performance, body length, and regulate the tibia development and viscera indices of growing-furring blue foxes.

Key words: calcium, vitamin D3, blue fox, growth performance, tibia, viscera index

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