文献类型： 外文期刊

作者： Liu, Jiayu ¹ ; Du, Zhiheng ¹ ; Li, Ting ¹ ; Xu, Yinan ¹ ; Lv, Jing ¹ ; Bai, Xiujuan ¹ ; Xu, Yuan ¹ ; Li, Guangyu ³ ;

作者机构： 1.Northeast Agr Univ, Coll Anim Sci & Technol, Harbin 150030, Peoples R China

2.Heilongjiang Acad Agr Sci, Branch Anim Husb & Vet, Qiqihar 161005, Peoples R China

3.Qingdao Agr Univ, Coll Anim Sci & Technol, Qingdao 266109, Peoples R China

关键词： blue fox; calcium; growth performance; phosphorus; vitamin D-3

期刊名称：ANIMALS （ 影响因子：3.231； 五年影响因子：3.312 ）

ISSN： 2076-2615

年卷期： 2022 年 12 卷 14 期

页码：

收录情况： SCI

摘要： Simple Summary Nutrient requirements have previously been established for minks and foxes, but not specifically for blue foxes. Over the past thirty years, an increase in body size was observed in the farmed blue fox because of the development of modern breeding technology. Hence, it is necessary to study the interaction mechanisms and requirements of calcium (Ca) and vitamin D-3 (VD3) according to the body weights and conditions of farmed blue foxes to guide modern farms. The objective of the present study was to study the influence of dietary Ca and VD3 supplemental levels on the nutrient digestibility, growth performance, and serum biochemical indices of growing blue foxes. The results indicated that the Ca and VD3 doses showed promising effects on growth performance and nutrient digestibility in growing blue foxes and could reduce fecal nitrogen (N) and phosphorus (P) via improvement in protein and P utilization. Based on the randomized design, a 3 x 3 factorial experiment was designed to examine the effects of dietary calcium (Ca), phosphorus (P), and vitamin D-3 (VD3) supplemental levels with a fixed 1.5/1 ratio of Ca to P on the growth performance, nutrient digestibility, and serum biochemical indices blue foxes' growth. In total, 135 male blue foxes with the age of 60 days were randomly divided into 9 groups each with 15 blue foxes. The blue foxes belonging to the nine treatment groups were fed Ca supplementation (0%, 0.4%, or 0.8%) and VD3 supplementation (1000, 2000, or 4000 IU/kg DM). The base diet contained 0.8% Ca and 327 IU/kg VD3. The dosage of VD3 in blue foxes showed a significant impact on their growth performance (p < 0.05). The Ca dosage had a linear effect on the digestibility of the CP and carbohydrates (CHO) (p < 0.05). In conclusion, the results indicated that the Ca and VD3 doses showed promising effects on growth performance and nutrient digestibility in growing blue foxes and could reduce fecal N and P via improvement in protein and P utilization.