蛋氨酸锌螯合物中的锌在山羊体内代谢规律的研究  

Metabolism of zinc from ZnMet by goats.

作　　者：李丽立[1] 张彬[2] 黄见良[2] 李海屏[3] 邓世林[4] 

机构地区：[1]中国科学院长沙农业现代化研究所 [2]湖南农业大学 [3]湖南省化工研究院 [4]湖南医科大学

出　　处：《应用生态学报》1999年第4期467-470,共4页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金

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％，显著地（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％，差异显著（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。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 65 ZnMet and 65 ZnSO 4,respectively.The results showed that the 65 Zn concentration in feces was lower in 65 ZnMet group than in 65 ZnSO 4 group.The absorption of zinc from 65 ZnMet was 49.12%,significantly (p<0.05). higher than that from 65 ZnSO 4(38.91%) The excretion of zinc came to a climax after 52 hours in 65 ZnMet group,18 hours later than that in 65 ZnSO 4 group. The remaining rates of 65 Zn in goat bodies were 40.38% in 65 ZnMet group and 29.52% in 65 ZnSO 4 group. There was no significant difference in remaining rates between the two groups after stopping 65 Zn 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.

关 键 词：山羊 代谢规律 蛋氨酸锌螯合物 锌 

分 类 号：Q591.7[生物学—生物化学] S827.1[农业科学—畜牧学]