J. Anim Sci.
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J. Anim Sci. 1965. 24:955-958.
© 1965 American Society of Animal Science
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Alkaline and Acid Phosphatase Activity in the Endometrium and Ovary of Swine1

L. Goode2, A. C. Warnick and H. D. Wallace

Florida Agricultural Experiment Station, Gainesville3

Abstract

The levels of activity and the distribution of alkaline and acid phosphatase in the ovary and endometrium of gilts slaughtered at various stages of the estrous cycle and early pregnancy were determined by biochemical and histochemical methods.

Alkaline phosphatase activity in the endometrium varied markedly, ranging from an average of 9.30 units 3 days after breeding to 0.46 units 25 days after breeding. Differences between periods were highly significant. Changes in the distribution of the enzyme were also observed. At 3 days after breeding alkaline phosphatase was concentrated in the surface and upper glandular epithelium. By 25 days after breeding the enzyme was largely confined to the glandular epithelium.

Acid phosphatase activity in the endometrium increased from an average of 1.03 units during estrus to 5.71 units 25 days after breeding. Differences between periods were highly significant. The enzyme was confined to epithelial cells and was most prominent in the basal endometrium.

In the ovary alkaline phosphatase was found in the theca interna at all periods studied. The granulosa cells did not show activity. Activity was generally low in the corpus luteum, but increased from estrus to 25 days after breeding. Acid phosphatase activity was low in all parts of the ovary and did not appear to fluctuate with stage of cycle or pregnancy.

Footnotes

1 Florida Agricultural Experiment Station Journal Series No. 1906.

2 Present address: Animal Science Department, North Carolina State University, Raleigh, North Carolina.

3 Department of Animal Science.






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Copyright © 1965 by the American Society of Animal Science.