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Position: Home > Articles > Effects of Dietary Zinc Supplementation as Zinc Sulfate on Rumen Fermentation in Steers Chinese Agricultural Science Bulletin 2008,24 (12) 20-24

肉牛日粮补饲硫酸锌对瘤胃发酵代谢的影响

作  者：
王峰;莫放;黄应祥;王茂荣;苗朝华;陈瑶
单  位：
山西农业大学动物科技学院;中国农业大学动物营养学国家重点实验室
关键词：
肉牛;锌;VFA
摘  要：
选用4头装有永久性瘤胃瘘管的西门塔尔杂交肉牛,采用4×4拉丁方设计,研究日粮补饲不同无机锌(源于硫酸锌,水平为0、25、50和100mg/kg干物质(DM))对瘤胃氨氮和挥发性脂肪酸(VFA)浓度的影响。试验结果表明,日粮补饲锌对瘤胃VFA浓度(产生量)有明显影响(P<0.05),与对照组相比,50、100mg/kgDM的补饲明显提高乙酸、和总VFA的浓度(P<0.05),而日粮中锌的补饲对瘤胃页氨氮浓度和瘤胃VFA摩尔比例没有显著影响(P>0.05),每千克日粮补饲50和100mg/kgDM无机锌可明显促进瘤胃的发酵。
译  名：
Effects of Dietary Zinc Supplementation as Zinc Sulfate on Rumen Fermentation in Steers
作  者：
Wang Feng1,2,Mo Fang1,Huang Yingxiang2,Wang Maorong1,2,Miao Chaohua1,2,Chen Yao1(1State Key Laboratory of Animal Nutrition,China Agricultural University,Beijing 10094;2College of Animal Science and Technology,Shanxi Agricultural University,TaiguShanxi 030801)
关键词：
steer,Zn,VFA
摘  要：
An experiment was conducted to determine the effect of supplemental Zn(as Zn sulfate)on rumen fermentation in steers.Four ruminally cannulated steers were fed,in a 4×4 Latin square design,2.8 kg/d concentrate and 4.2 kg/d rice straw as a basic dietary.Treatments consisted of the following:control(no supplemental Zn)and 25 or 50 or 100 mg Zn/kg DM(on DM basis of dietary)from Zn sulfate.Rumen samples were collected at days 22,23 and 24 of experiment period.There were significant effects of supplementation of Zn on concentrate of acetate,propionate,and total VFA(P< 0.05).The concentrate of ruminal NH3-N and the VFA molar proportions were not affected by the addition of Zn to diets(P>0.05).However,for comparing control(no supplementation),the concentrate of acetate and total VFA were higher with supplementation of 50 or 100 mg/kgDM Zn(P< 0.05).These results indicated that Zn-supplemented at 50 or 100 mg/kg DM improved rumen fermentation in steers.

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