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SOME OBSERVATIONS ON OVIPOSITION IN THE FOWL
Author(s) -
Sykes A. H.
Publication year - 1953
Publication title -
quarterly journal of experimental physiology and cognate medical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0033-5541
DOI - 10.1113/expphysiol.1953.sp001013
Subject(s) - uterus , fowl , ovulation , anatomy , vagina , laparotomy , peristalsis , biology , abdominal muscles , medicine , surgery , endocrinology , hormone , ecology
1. Six out of nine hens were able to lay their eggs after spinal transections, but the process took much longer than normal. 2. Ovulation was almost completely inhibited in the spinal birds. 3. Observations at laparotomy show that during oviposition the uterus is not everted as claimed by Wickmann, but that the egg passes from the uterus into the vagina and from there is laid by peristaltic action of the vaginal muscles. 4. The observations suggest that the abdominal muscles are used in normal laying.