饲粮铁水平对冬毛期水貂生产性能、血清生化指标和脏器指数的影响

doi:10.11843/j.issn.0366-6964.2017.08.022

摘要/Abstract

摘要：

旨在探讨饲粮不同铁水平对雄性水貂生产性能、血清生化指标及脏器指数的影响。选取145日龄健康、体重相近的雄性水貂75只，随机分为5组，每组15只水貂，分别饲喂在基础日粮中添加0（Fe0）、100（Fe100）、200（Fe200）、300（Fe300）、400 mg·kg^-1（Fe400）铁的试验饲粮。试验期60 d，分别测定水貂生产性能指标，血清中氮代谢指标、蛋白质指标及血清铁和相关酶指标，并计算脏器指数。结果表明：1）当饲粮中添加300 mg·kg^-1铁时能够显著提高试验结束时水貂体重和体长（P<0.05），并且Fe300组水貂血清中GLOB显著高于其他各组（P<0.05），Fe300组TP显著高于Fe0、Fe100和Fe200组（P<0.05），但与Fe400组差异不显著。2）水貂血清中IgG和IgM的水平各组间差异不显著（P>0.05），但Fe300组IgA含量显著高于Fe0和Fe200组（P<0.05）。3）水貂血清中铁的含量随着日粮铁水平的提高呈显著的升高（P<0.05），日粮铁水平对水貂血清中AST、LDH、ALP影响不显著（P>0.05）。4）Fe300组水貂肝脏指数显著高于Fe0、Fe100和Fe400组（P<0.05），与Fe200组差异不显著（P>0.05）。水貂脾脏指数和肾脏指数各组间差异不显著（P>0.05）。综合以上指标，在本试验条件下，得出当水貂饲粮中添加300 mg·kg^-1铁，饲粮中总铁含量为401 mg·kg^-1时，能够提高水貂生产性能，同时能够促进蛋白质代谢和提高水貂体液免疫水平，提高水貂肝脏指数。

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.

中图分类号:

张海华, 王士勇, 南韦肖, 司华哲, 李光玉. 饲粮铁水平对冬毛期水貂生产性能、血清生化指标和脏器指数的影响[J]. 畜牧兽医学报, 2017, 48(8): 1557-1564.

ZHANG Hai-hua, WANG Shi-yong, NAN Wei-xiao, SI Hua-zhe, LI Guang-yu. Effects of Dietary Iron Levels on Production Performance,Blood Serum Biochemical Parameters and Organ Index of Mink[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2017, 48(8): 1557-1564.

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