Experimental Animals
Online ISSN : 1881-7122
Print ISSN : 0007-5124
Early Detection of Pregnancy of the Rat by Palpation
Yoshio AGEMATSUHiroshi IKADAIHiromi AMAO
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JOURNAL FREE ACCESS

1983 Volume 32 Issue 4 Pages 209-212

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Abstract
A manual palpation method has been devised for early detection of pregnancy of the rat. One hand gently restrains the animal by holding it from behind in the usual manner. The thumb of the other hand is placed on the posterior abdomen and the first three fingers on the ventral midline. The three fingers were pressed gently upward and laterally. The embryos can then be palpated through the abdominal wall between the thumb and the three fingers. The number of fetuses was not affected by this palpation method. Using this technique, pregnancy was detected on the 5 th day of gestation with an accuracy rate of 80% and between the 6 th and 9 th days with a 100% accuracy.
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© Japanese Association for Laboratory Animal Science
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