Effects of Probiotics Additives on Growth Performance, Nutrient Digestibility and Pelt Quality of Blue Foxes during Winter Hair Period

GUO Jungang, GONG Xiao, ZHANG Tietao, WU Xuezhuang, LIU Zhi, GUO Qiang, GAO Xiuhua, YANG Fuhe, XING Xiumei

doi:10.3969/j.issn.1006-267x.2014.08.026

2014 , Vol. 26 >Issue 8: 2232 - 2239

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.08.026

Special Economic Animal Nutrition

Effects of Probiotics Additives on Growth Performance, Nutrient Digestibility and Pelt Quality of Blue Foxes during Winter Hair Period

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1. Institute of Feed Research, Chinese Academy of Agriculture Sciences, Beijing 100081, China;
2. Institute of Economic Animal and Plant Science, State Key Laboratory for Molecular Biology of Special Economic Animals, Chinese Academy of Agriculture Sciences, Changchun 130112, China

Received date: 2014-02-27

Online published: 2014-08-13

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Abstract

This experiment was conducted to study the effects of probiotics (Bacillus subtilis or Enterococcus faecium) additives on growth performance, nutrient digestibility and pelt quality of blue foxes during winter hair period. Eighty-four healthy female blue foxes at the age of 25 weeks were randomly assigned into 7 groups with 12 replicates per group and 1 fox per replicate. The foxes in group Ⅰ (control group) were fed a basal diet, while those in groups Ⅱ, Ⅲ and Ⅳ were fed the basal diets supplemented with 1×10⁸, 1×10⁹ and 1×10¹⁰ CFU/kg Bacillus subtilis, and those in groups Ⅴ, Ⅵ and Ⅶ were fed the basal diets supplemented with 1×10⁷, 1×10⁸ and 1×10⁹ CFU/kg Enterococcus faecium, respectively. The adaptation period lasted for 7 days and the formal trial period lasted for 56 days. The results showed as follows: the final body weight in the group Ⅳ was significantly higher than that in the groups Ⅰ and Ⅶ (P<0.05), and the average daily gain in the groups Ⅳ and Ⅴ were significantly higher than that in the groups Ⅰ, Ⅲ and Ⅶ (P<0.05), while there were no significant differences in other indexes of growth performance among all groups (P>0.05). The digestibility of dry matter in the group Ⅶ was significantly lower than that in the other groups (P<0.01), meanwhile, the digestibility of dry matter in the group Ⅳ was significantly higher than that in the group Ⅰ (P<0.05). In addition, the digestibility of crude protein in the group Ⅳ was significantly higher than that in the groups Ⅰ, Ⅱ and Ⅶ (P<0.05), the digestibility of ether extract in the groups Ⅴ and Ⅵ were significantly higher than that in the groups Ⅰ, Ⅱ and Ⅲ (P<0.05), the nitrogen deposition in the group Ⅳ was significantly higher than that in the groups Ⅰ, Ⅱ and Ⅶ (P<0.05), and the pile fur length in the groups Ⅳ and Ⅴwas significantly longer than that in the group Ⅰ (P<0.05). In conclusion, considering all measured indices of this experiment, adding 1×10¹⁰ CFU/kg Bacillus subtilis or 1×10⁷ CFU/kg Enterococcus faecium in diets for blue foxes during winter hair period can improve the average daily gain and final body weight, and increase the digestibility of crude protein and ether extract, it also can reduce the nitrogen excretion, and increase the nitrogen deposition, meanwhile, the blue foxes can obtain the better pelt quality as well.

Key words： probiotics; blue foxes; winter hair period; growth performance; nutrient digestibility; pelt quality

Cite this article

GUO Jungang, GONG Xiao, ZHANG Tietao, WU Xuezhuang, LIU Zhi, GUO Qiang, GAO Xiuhua, YANG Fuhe, XING Xiumei . Effects of Probiotics Additives on Growth Performance, Nutrient Digestibility and Pelt Quality of Blue Foxes during Winter Hair Period[J]. Chinese Journal of Animal Nutrition, 2014 , 26(8) : 2232 -2239 . DOI: 10.3969/j.issn.1006-267x.2014.08.026

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