Kudlác E, Simoník I
Klinik für Geburtshilfe und Gynäkologie, Vet. Med. Hochschule in Brno, CSFR.
Dtsch Tierarztl Wochenschr. 1990 Oct;97(10):396-8.
The content of heavy metals (Cd, Hg, Pb, Cr, Cu and Zn) has been determined by atomic absorption spectrophotometry in parts of genital organs of cows with and without reproductive disorders, in blood, in placenta, in colostrum, and in the calf blood. The samples were collected in an industrially polluted area and in a relatively non-polluted area. It has been proven in the group of 99 cows that the biological quality of the oestrous cervical mucus is also influenced by toxic elements. The best conception rate after the artificial insemination (80.0%) has been found in cows with the cervical mucus without spermiotoxic properties. The genital organs of 49 cows culled because of reproductive disorders were examined. No significant differences in the content of heavy metals have been found in the separate parts of genital organs. There were also no differences between the cows with and without reproductive disorders. Toxic elements in blood have been found in cows after parturition and in newborn calves both in the polluted and the non-polluted areas. However, significant differences (p less than 0.01) were determined only in the content of Cd and Zn. The average content of all determined toxic elements in the samples of placenta in pluriparous and primiparous cows from the polluted and non-polluted areas was approximately at the same level. The content of Zn was 4.3 times higher than the hygienic standard in the colostrum of cows from the polluted area. The content of Zn exceeded the hygienic standard also in the non-polluted area, and the content of Cd and Hg was close to the hygienic standard there.
采用原子吸收分光光度法测定了有生殖障碍和无生殖障碍奶牛的部分生殖器官、血液、胎盘、初乳及犊牛血液中的重金属（镉、汞、铅、铬、铜和锌）含量。样本采集于工业污染区和相对无污染区。在99头奶牛群体中已证实，有毒元素也会影响发情期宫颈黏液的生物学质量。人工授精后受孕率最高（80.0%）的是宫颈黏液无精子毒性的奶牛。对因生殖障碍而淘汰的49头奶牛的生殖器官进行了检查。在生殖器官的各个部位，重金属含量未发现显著差异。有生殖障碍和无生殖障碍的奶牛之间也没有差异。在污染区和非污染区，产后奶牛和新生犊牛的血液中均发现了有毒元素。然而，仅在镉和锌的含量上确定了显著差异（p小于0.01）。来自污染区和非污染区的经产奶牛和初产奶牛胎盘样本中所有测定的有毒元素的平均含量大致处于同一水平。污染区奶牛初乳中锌的含量比卫生标准高4.3倍。在非污染区，锌的含量也超过了卫生标准，镉和汞的含量接近那里的卫生标准。
