. Control of ovulation; proceedings of the conference held at Endicott House, Dedham, Massachusetts, 1960. Ovulation -- Regulation. OVULATION IN THE DOMESTIC FOWL Richard M. Fraps Agricultural Research Service, Department of Agriculture Beltsville, Maryland Observations and experiments on many species have contributed much to our knowledge of various aspects of ovarian development and ovulation in birds. The common domestic fowl is, however, the only avian species for which we have today any fairly substantial and coherent perspective—incom- plete though this may be in many respects—of pr
. Control of ovulation; proceedings of the conference held at Endicott House, Dedham, Massachusetts, 1960. Ovulation -- Regulation. OVULATION IN THE DOMESTIC FOWL Richard M. Fraps Agricultural Research Service, Department of Agriculture Beltsville, Maryland Observations and experiments on many species have contributed much to our knowledge of various aspects of ovarian development and ovulation in birds. The common domestic fowl is, however, the only avian species for which we have today any fairly substantial and coherent perspective—incom- plete though this may be in many respects—of processes directly and in- directly involved in ovulation. A number of arguments might be advanced for the seemingly dispropor- tionate concern with ovulation in the fowl, including such things as this bird's ready availability, adaptability to experimental conditions and procedures, and possession of convenient external indices of gonadal function (65). But in addition to these obviously desirable attributes, the domesticated hen continues to ovulate over much of the year, she does so in definite patterns so arrayed as to constitute recurring cycles of considerable experimental significance and, not least in importance, the time of most ovulations may be predicted with a high degree of accuracy. With good cause the hen thus deserves its favored position in the study of ovulation in birds. Nevertheless, a sound knowledge of the physiology of ovulation in birds can scarcely be based on any single species, and it is regrettable that so Httle is known regarding these complex and undoubtedly diversified phenomena among other species, and more particularly in wild birds exhibiting restricted breeding seasons. This broader comparative know- ledge seems all the more desirable in view of the suspicion that the domestic hen has been so highly selected for egg production that her reproductive processes can no longer be regarded as representative of birds generally and of wild birds mor
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