ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (12): 1988-1994.doi: 10.11843/j.issn.0366-6964.2014.12.011

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Effects of Diets with Different Zinc Levels on the Selected Serum Biochemical Indexes and Organ Indexes of Minks during the Winter Hair Period

ZHOU Ning1,2,ZHANG Hai-hua1,LYU Zhi-chao3,ZHANG Ting1,HUANG Jian1,SUN Hao-ran1,YIN Yun-hou4,LI Guang-yu1*,YAN Chang-guo2*   

  1. (1.Institute of Special Animal and Plant Sciences,Chinese Academy of Agricultural Sciences,Changchun 130112,China;2.Agriculture College of Yanbian University,Yanji 133002,China;3.College of Animal Science and Technology,Jilin Agricultural University,Changchun 130118,China;4.Guizhou Minzu University,Guiyang 550025,China)
  • Received:2014-03-25 Online:2014-12-23 Published:2014-12-23

Abstract:

 This experiment was conducted to study the effects of different dietary zinc level on blood serum biochemical indexes and organ indexes during the winter hair period of mink.75 healthy male minks were randomly divided into 5 groups with 15 replicates per group and 1 mink per replicate.0(Ⅰ),50(Ⅱ),100(Ⅲ),300(Ⅳ),600 mg•kg-1(Ⅴ)of zinc level were added in basical diet.The trial lasted for 75 d with 7 d of pretrial.Organ indexes were calculated by body weight and organ weight.Proteins indices,nitrogen metabolism indices,enzymes,mineral elements of Serum were determined by biochemical kit.The results showed as follows,kidney index were not significantly affected by dietary Zn levels (P>0.05);liver index,spleen index and heart index of group Ⅲ and Ⅳ were significant higher than that of group Ⅰ and Ⅴ (P<0.05).The content of serum total protein and globulin of group Ⅳ were significantly higher than that of group Ⅰ (P<0.05),serum albumin were similar among all groups(P>0.05);The content of IgA in group Ⅳ was significantly higher than that in group Ⅰ and Ⅱ,IgG and IgM were similar among all groups(P>0.05).The content of serum AST in group Ⅲ were significantly higher than that in other groups (P<0.05 ),the content of serum ALT in group Ⅳ were significantly higher than that in group Ⅰ and Ⅱ (P<0.05);Serum UN were similar among all treatments(P>0.05);The contents of Serum ALP in group Ⅳ were significantly higher than those in group Ⅰ,Ⅱ and Ⅲ (P<0.05),and LDH were similar among other groups (P>0.05);Serum Zn increased with dietary zinc level increasing (P<0.05),serum Ca were similar among all groups(P>0.05),serum P in group Ⅴ were significantly higher than in other groups (P<0.05).In conclusion,supplementation of 100 and 300 mg•kg-1 Zn may enhance the organ index of minks .When the dietary Zn level come up to 300 mg•kg-1,the minks in growing period have the relatively higher immunity,protein synthesis rate and bioavailability of Zn.

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