ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (5): 986-995.doi: 10.11843/j.issn.0366-6964.2018.05.013

Previous Articles     Next Articles

Effects of Dietary Vitamin D and Calcium Levels on Production Performance, Serum Biochemical Parameters and Organ Indexes of Male Standard Mink during Winter Fur-growing Period

WANG Jing, ZHANG Hai-hua, XU Yi-nan, LI Ren-de, ZHANG Xue-lei, CAI Xi-heng, LI Guang-yu*   

  1. Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences of Chinese Academy of Agricultural Sciences, Changchun 130112, China
  • Received:2017-10-25 Online:2018-05-23 Published:2018-05-23

Abstract:

The aim of this study was to investigate the effects of dietary vitamin D and calcium levels on production performance, serum biochemical parameters and organ indexes of male mink under the fixed ratio of calcium to phosphorus. One hundred and seventeen healthy male minks with (135±5) day-old with similar body weight were randomly divided into 9 groups with 13 replicates per group and 1 mink per replicate. The experiment was conducted with a 3×3 factorial design using a basal diet containing 2 300 IU·kg-1 vitamin D and 2.0% Ca. The dietary ratio of calcium to phosphorus was fixed to 1.7. Nine kinds of diets were prepared in the experiment. The supplementary vitamin D levels were 0, 2 000 and 4 000 IU·kg-1 of the diets, respectively, while supplementary Ca levels were 0%, 0.4%, 0.8%, respectively. Calcium and vitamin D levels were 2.0% versus 2 300 IU·kg-1, 2.0% versus 4 300 IU·kg-1, 2.0% versus 6 300 IU·kg-1, 2.4% versus 2 300 IU·kg-1, 2.4% versus 4 300 IU·kg-1, 2.4% versus 6 300 IU·kg-1, 2.8% versus 2 300 IU·kg-1, 2.8% versus 4 300 IU·kg-1, 2.8% versus 6 300 IU·kg-1. The test lasted for 60 days. Production performance, serum nitrogen metabolism indexes and fat metabolism indexes were measured, and organ index was calculated. The results showed that:1) When the calcium supplementation level was 0%, the skin length of mink significantly increased (P<0.05). The vitamin D and calcium levels had no significant effect on the body weight, body length and fur quality of mink (P>0.05). 2)The serum TP concentration significantly increased(P<0.05) and serum TG concentration significantly decreased (P<0.05) when the addtion level of vitamin D was 2 000 IU·kg-1. When the supplementary level of calcium was 0.8%, the serum HDL concentration of mink significantly increased (P<0.05), and the concentration of LDL significantly decreased (P<0.01).3) 0.8% calcium supplementation significantly increased mink heart index, liver index and spleen index(P<0.05), vitamin D supplementation in 0-2 000 IU·kg-1 significantly increased mink kidney index(P<0.01). In conclusion,under the conditions of this experiment, when the dietary supplementation is 0-2 000 IU·kg-1 vitamin D (total 2 300-4 300 IU·kg-1 vitamin D in diet), protein metabolism and kidney index of mink can be promoted;when the dietary supplementation is 0.8% Ca(total 2.8% Ca in diet), heart index, liver index and spleen index of mink can be promoted.

Key words: vitamin D, calcium, phosphorus, mink, production performance, serum biochemical parameters, organ indexes

CLC Number: