J. Anim Sci.
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J. Anim Sci. 1987. 64:226-230.
© 1987 American Society of Animal Science
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Comparison of Surface Diameters and Dissected Diameters of Bovine Ovarian Follicles1

L. J. Spicer2, H. A. Tucker3, E. M. Convey4 and S. E. Echternkamp5

Michigan State University,5, East Lansing 48824 and U.S. Department of Agriculture,6, Clay Center, NE 68933

Abstract

Comparisons were made between diameters of 54 bovine follicles greater than 5.9 mm from 32 pairs of ovaries measured on the ovarian surface and diameters of the same follicles subsequently dissected from the ovaries. Seventy-eight percent of follicles measured on the ovarian surface were within 1.9 mm of the size measured after dissection. The remaining 22% of follicles measured on the surface had diameters recorded that were 2.0 to 3.9 mm different than their diameter after dissection. Surface diameter tended to underestimate dissected diameter for small follicles (<8.0 mm) and to overestimate dissected diameter for large (>= 12.0 mm) follicles. The correlation coefficient between surface and dissected follicular diameters was .83. We conclude that measuring the diameter of the largest follicles on the ovarian surface and after dissection yield approximately equivalent results.

Footnotes

1 Michigan Agr. Exp. Sta. Journal Article No. 11957.

2 Present address: The Milton S. Hershey Med. Center, The Pennsylvania State Univ., Hershey, PA 17033.

3 Address reprint requests to this author.

4 Present address: Merck, Sharp and Dohme Res. Lab., Merck and Co., Inc., Rahway, NJ 07065

5 Dept. of Anim. Sci.

6 Roman L. Hruska U. S. Meat Anim. Res. Center.






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Copyright © 1987 by the American Society of Animal Science.