蛋氨酸锌螯合物中的锌在山羊体内代谢规律的研究

应用生态学报 ›› 1999, Vol. 10 ›› Issue (4): 467-470.

蛋氨酸锌螯合物中的锌在山羊体内代谢规律的研究

李丽立¹, 张彬², 黄见良², 李海屏³, 邓世林⁴

1. 中国科学院长沙农业现代化研究所, 长沙 410125;
2. 湖南农业大学, 长沙 410128;
3. 湖南省化工研究院, 长沙 410006;
4. 湖南医科大学, 长沙 410078

收稿日期:1999-02-26 修回日期:1999-04-22 出版日期:1999-07-25 发布日期:1999-07-25
通讯作者: 李丽立,女,43岁,副研究员,从事动物营养研究工作,发表论文30余篇.E-mail:lili@ms.csiam.ac.cn E-mail:lili@ms.csiam.ac.cn
基金资助:
国家自然科学基金资助项目(39470524).

Metabolism of zinc from ZnMet by goats

Li Lili¹, Zhang Bin², Huang Jianliang²

1. Changsha Institute of Agricultural Modernization, Academia Sinica, Changsha 410125;
2. Hunan Agricultural University, Changsha 410128

Received:1999-02-26 Revised:1999-04-22 Online:1999-07-25 Published:1999-07-25

摘要/Abstract

摘要： 将10头体重为9kg左右的健康浏阳黑公山羊分成两组,在代谢笼内个体饲喂,分别喂以含⁶⁵Zn蛋氨酸Zn(⁶⁵ZnMet)和⁶⁵Zn硫酸锌(⁶⁵ZnSO₄)的饲粮,以比较研究蛋氨酸锌螯合物中的Zn在山羊体内的代谢规律。结果表明,⁶⁵ZnMet组在粪中排出⁶⁵Zn的浓度低于⁶⁵ZnSO₄组,在饲喂⁶⁵ZnMet螯合物3d期间Zn的表观吸收率为49.12%,显着地(α<0.05)高于⁶⁵ZnSO₄(38.91%)组,52h达到排泄高峰。⁶⁵ZnMet组与⁶⁵ZnSO₄组⁶⁵Zn在体内的存留率分别为40.38%与29.52%,差异显着(α<0.05);停止饲喂⁶⁵Zn后的第3d,两组体内存留趋于平衡,⁶⁵ZnMet组与⁶⁵ZnSO₄分别为4.88与4.74mg;在组织器官中Zn的分布规律两组几乎相同,单位含量均以肝、脾、胰含量高,骨、蹄含量低.

关键词: ⁶⁵ZnMet, ⁶⁵ZnSO₄, 山羊, 代谢规律

Abstract: An experiment was conducted to compare the metabolism of zinc from zinc methionine (ZnMet) chelate by 10 healthy goats which were divided into two groups fed with basal diet plus ⁶⁵ZnMet and ⁶⁵ZnSO₄,respectively.The results showed that the ⁶⁵Zn concentration in feces was lower in⁶⁵ZnMet group than in⁶⁵ZnSO₄ group.The absorption of zinc from ⁶⁵ZnMet was 49.12%,significantly (p<0.05). higher than that from ⁶⁵ZnSO₄(38.91%) The excretion of zinc came to a climax after 52 hours in ⁶⁵ZnMet group,18 hours later than that in ⁶⁵ZnSO₄ group. The remaining rates of ⁶⁵Zn in goat bodies were 40.38% in⁶⁵ZnMet group and 29.52% in ⁶⁵ZnSO₄ group. There was no significant difference in remaining rates between the two groups after stopping ⁶⁵Zn feed for 3 days. In whole experimental period and in both groups,the zinc content in unit gram of liver,spleen and pancreas was higher than that in other tissues and organs,and the lowest was found in unit gram of bone and hoof.

Key words: ZnMet, ⁶⁵ZnSO₄, Goat, Metabolism

李丽立, 张彬, 黄见良, 李海屏, 邓世林. 蛋氨酸锌螯合物中的锌在山羊体内代谢规律的研究[J]. 应用生态学报, 1999, 10(4): 467-470.

Li Lili, Zhang Bin, Huang Jianliang. Metabolism of zinc from ZnMet by goats[J]. Chinese Journal of Applied Ecology, 1999, 10(4): 467-470.

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