ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (8): 1557-1564.doi: 10.11843/j.issn.0366-6964.2017.08.022

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Effects of Dietary Iron Levels on Production Performance,Blood Serum Biochemical Parameters and Organ Index of Mink

ZHANG Hai-hua, WANG Shi-yong, NAN Wei-xiao, SI Hua-zhe, LI Guang-yu*   

  1. Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
  • Received:2017-02-28 Online:2017-08-23 Published:2017-08-23

Abstract:

The experiment was conducted to study the effect of dietary iron levels on production performance, blood serum biochemical parameters and organ index in male mink. Seventy-five healthy male minks with one hundred and forty-five days of age and similar body weight were randomly divided into 5 groups with 15 minks in each group. 0(Fe0), 100(Fe100), 200(Fe200), 300(Fe300) and 400 mg·kg-1(Fe400) of iron levels were added in basic diet. The trial lasted for 60 d. Production performance, nitrogen metabolism indices, proteins indices, serum iron, enzymes activity of serum and organ index were determined. The results showed that:1)When the diet supplemented with 300 mg·kg-1 iron, the body weight and body length of minks at the end of experiment were significantly higher than that in Fe0 and Fe100 groups (P<0.05), GLOB were the highest in Fe300 group, TP of Fe300 group was higher than that of group Fe0, Fe100 and Fe200 groups(P<0.05), but it was similar with Fe400 group. 2)No significant differences among all groups in IgG and IgM(P>0.05), but IgA in Fe300 group was higher than that in Fe0 and Fe200 groups (P<0.05). 3)The iron levels in mink's serum was significantly increased with dietary iron levels increasing (P<0.05), dietary iron levels had no significant effects on AST, LDH and ALP in serum of minks (P>0.05). 4)The liver index of Fe300 group was higher than that of Fe0, Fe100 and Fe400 groups (P<0.05), but it was similar with Fe200 group (P>0.05). The kidney index and spleen index were similar among all groups (P<0.05).In conclusion, under this experimental conditions, when the diet supplementation with 300 mg·kg-1 iron, the total iron was 401 mg·kg-1 in the diet, it could improve the production performance, promote protein metabolism and improve the level of humoral immunity of minks, and it also could improve the liver index of mink.

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