Studies on the Cell Picture of Vaginal Smears Stained by Papanicolaou's Method in Pregnant Dairy Cows

Oh, Soo Kak; Choi, Hee In

Korean Journal of Veterinary Research 1973;13(1):79-83.

Soo Kak Oh, Hee In Choi

Department of Veterinary Medicine, College of Agriculture Seoul National University

임신월수(姙娠月數)에 따르는 유우(乳牛)의 질점액(膣粘液)에 함유된 세포성분(細胞成分)의 변화상(變化像)

오수각, 최희인

서울대학교 농과대학 수의학과

Abstract

Every month of pregnancy, vaginal smears were obtained from 42 dairy cows, and an attempt was made to correlate the cell picture with the stage of pregnancy. The results obtained in this work were summerized as follows: 1. At early pregnancy, most of the cells in the smears were the cells with normal nucleus and cytoplasm, and leucocytes. After the first month of pregnancy there was a progressive decrease in the rate of appearance of the cells with normal nucleus and cytoplasm, which dropped to the lowest value at the third month of pregnancy, thereafter, showing steady state. 2. After the first month of prgnancy the rate of appearance of the cells with karyolysis began to increase gradually, and reached a maximum at the fifth month of pregnancy, returning towards initial levels. 3. The rate of appearance of the cells with karyopyknosis was much lower at early pregnancy, but at the third month of pregnancy there was a rapid increase, thereafter, showing steady state (ranging from 20 to 50 percent). 4. The non-nucleated cornified cells, the cells with vacuolized cytoplasm, and the cells with swollen nucleus and cytoplasm were appeared much fewer or not, and significant changes were not recognized during pregnancy. 5. At early pregnancy there appeared many of leucocytes but dropped intensively at the third month of pregnancy, and, thereafter, appeared much fewer or not.