Spontaneous motility was studied in different segments of the oviduct in anesthetized laying hens. Recording balloons were introduced into the lumen of the fimbria, magnum, isthmus and uterus. The frequency (waves/mm) and amplitude of contractions (mm Hg) found are: for the infundibulum,2.0 ± 0.8 and 2.5 ± 0.3; for the magnum, 3.5 ± 0.9 and 2.6 ± 0,6; for the isthmus, 8.
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