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Nitrogen, Dry Matter and Inorganic Constituents in Ewe Oviduct Fluid¹

North Carolina State University, Raleigh

Abstract

Oviduct fluid collected during the estrous cycles of three Dorset ewes was analyzed for total nitrogen, dry matter, ash, sodium, potassium, calcium and phosphorus. Average concentrations, expressed as mg./lOO ml. of fluid, were: nitrogen, 613; dry matter, 4S8S; ash, 596; sodium, 186; potassium, 39; calcium, 37; phosphorus, 5.9. Differences between ewes were not significant for the respective constituents, and their concentrations did not vary significantly during the estrous cycle.

The average daily volume of fluid secreted by the oviduct averaged approximately 0.45 ml. prior to estrus, rose sharply with the onset of estrus and reached a peak of approximately 0.9 ml. 2 days after onset of estrus. From this point, volume declined rapidly to pre-estrus levels.

¹ Contribution from the Department of Animal Science, North Carolina Agricultural Experiment Station, Raleigh. Published with the Approval of the Director of Research as Paper No. 2355 of the Journal Series.

² Present Address: Assistant County Agent, Sparta, North Carolina.