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PubMed · 1237507

Bovine vaginal circulation: changes during estrous cycle.

R M Abrams·W W Thatcher·J R Chenault·C J Wilcox
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Abstract

Vaginal thermal conductance was measured in 12 heifers and 7 cows with a gradient layer heat flow probe. Values rose for 4 to 5 days prior to day of behavioral estrus (day 0), with a peak on days --2 and --1, and then declined from day 0 to +5. Curves for heifers were higher than those for cows although there was no evidence that they were not parallel. Changes during the cycle appear to result from estrogen-induced alterations in blood flow rate in vaginal tissues.

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Age FactorsAnimalsBlood CirculationBlood Flow VelocityCattleEstrogensEstrusFemaleHyperemiaPregnancyThermal ConductivityVaginaJournal Article

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R M Abrams, W W Thatcher, J R Chenault, C J Wilcox. 1975. Bovine vaginal circulation: changes during estrous cycle.. https://doi.org/10.3168/jds.s0022-0302(75)84747-3

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