北京黑白花乳牛蹄底角质中25种元素含量的研究

本实验采用电感耦合等离子体原子发射光谱仪,在1987年春、秋两季对北京某牛场的黑白花成年乳牛蹄底角质中25种元素(K、Na、S、Ca、P、Mg、Mn、Mo、Cu、Zn、Fe、I、Se、Co、Cd、Cr、Ni、B、Al、Si、Ti、Ba、Ph、As、Hg)进行了测定,并对春、秋季正形蹄与变形蹄、正形蹄与病变蹄,以及春秋正形蹄、变形蹄之间做了对比,还测定了饲料地的土壤、水和饲料中25种元素的含量,与国内外有关资料的结果进行了对比,初步探讨了某牛场成乳牛中正形蹄蹄底角质中25种元素的含量,指出春秋两季正形蹄蹄底角质中25种元素的含量是有差异的,春季正形蹄与变形蹄相比各元素差异均不显著;秋季变形蹄含Mg量显著高于正形蹄,含Ca、Al、Cd和Ti量显著低于正形蹄;春季病变蹄含K、Fe、Mn、Cu、Mg、Al、Ti、Se、I、Pb、Hg量显著高于正形蹄。本文首次提出北京黑白花乳牛正形蹄蹄底角质中Ca、P比值,春季是5.822/1,秋季是6.253/1。此牛场乳牛饮水中Hg含量过高是环境污染的结果。本文为今后进一步研究北京黑白花乳牛蹄角质与元素的关系提供了临床参考的依据。

DETERMINATION OF TWENTY-FIVE COMMON AND TRACE ELEMENTS IN THE SOLE STRATUM CORNEUM IN BEIJING BLACK AND WHITE COWS

In this experiment twenty-five common and trace elements including K, Na, Ca, P, S, Mg, Mn, Cu, Zn, Fe, I, Se, Co, Cr, Cd, Mo, Si, Ni, B, Al, Ti, Ba, Pb, As, and Hg, in the sole stratum corneum of the normal, abnormal and diseased hooves in Beijing Black and White cows on a farm were measured by using Inductively Coupled Plasma Atomic Essission Spectroscopy in spring and autumn 1987. The result showed that the contents of some elements in the sole stratum corneum of normal hooves varied significantly in the 456 adult cows in spring and autumn in a year. Comparing the normal with the abnormal hooves in spring, there was no significant difference in content of these elements. The abnormal hooves had more Mg, but less Co, Cd,Al, and Ti than normal hooves in autumn, the difference was significant. In spring, the diseased hooves had more K, Fe, Mn, Cu, Mg, Al, Ti, Se, I, Pb and Hg than the normal hooves, the difference was significant, too. The paper first shows the ratio of Ca and P in the sole stratum corneum of the normal, abnormal and diseased hooves in Beijing Black and White cows, the ratios in the normal hooves were 5.822 : 1 in spring and 6.253 : 1 in autumn. The content of Hg in water was very high, that was the result of Hg pollution in the environment around the farm. The paper provides some clinical data for further research about the relationship between the elements and the hoof horn in Beijing Black and White cows.