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Studies on selective separation of highly motile bovine sperm
1984
Kim, M.C. (Yonsei Univ., Seoul (Korea R.). Inst. of Agricultural Development)
As a fundamental study to increase the reproductive efficiency in cattle, highly motile sperm were separated and collected from raw semen, extended semen and frozen semen by different methods using various concentrations of bovine serum albumin or Tyrode's solution. Various characteristics and light microscopic and electron microscopic morphology of sperm separated by different methods were compared
Показать больше [+] Меньше [-]Sensitivity of repeat tuberculin test with bovine PPD, seibert's fraction A(SFA) and avian PPD tuberculins in visible and non-visible lesion reactor cattle to HCSM tuberculin
1984
Choi, C.S. | Kim, J.H. | Yoon, Y.D. (Institute of Veterinary Research, Dept. of Bacteriology)
To investigate the sensitivity of repeat tuberculin test with bovine PPD, seibert's fraction A(SFA) and avian PPD tuberculins in visible and non-visible lesion reactor cattle to HCSM tuberculin. The comparative test, under the condition of this experiment, was entirely unsatisfactory to differentiate between visible and non-visible lesion cases, the high frequency distribution of the skin fold thickness greater than 10mm to SFA tuberculin appeared in visible lesion cases, whereas the skin reaction 1 less than 4mm to the SFA tuberculin appeared in NVL cases
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