|
|
||||||||
Kansas State University, Manhattan 66502
Abstract
CHARACTERISTICS of abnormal sexual development, functional aspects of reproductive failures and many environmental, physiological and nutritional factors associated with reproductive efficiency have been investigated. However, after continuous failure to solve the problems of reproductive disorders investigators have attempted to determine more adequately the normal development and functional processes involved.
Investigations on embryonic differentiation of the mammalian ovary have been reviewed by Young (1961), Witschi (1963) and Gier and Marion (1969). Unfortunately, much early work Felix (1912) was based on undated embryonic material and in some cases abnormal tissues, resulting in lack of agreement among authors as to time sequences and processes involved in developmental anatomy.
A similar situation exists in studies of the embryonic differentiation of the uterus reviewed by Allan (1958), Witschi (1959) and Call (1967). Variations in embryonic development of the bovine uterus that result in growth abnormalities frequently have been reported (Chapin, 1917; Bissonnette, 1924; Fincher and Williams, 1926; Gregory, Regan and Mead, 1945; Spriggs, 1946; Roberts, 1950).
1 Contribution number 756, Department of Dairy and Poultry Science, and 1063, Division of Biology, Kansas Agricultural Experiment Station, Manhattan, 66502.
2 Appreciation is expressed especially to Drs. E. P. Call, J. B. Choudary, B. H. Erickson, E. B. Krehbiel, L. L. Larson, P. N. Rao and Francisco Cuevas-Correa, for their research efforts that were responsible for much of the information included in this paper. We also gratefully acknowledge the assistance of P. N. Rao, Marjorie Davis and Kit Poling in the preparation of this manuscript.
3 Present address: Department of Animal Industries, Southern Illinois University, Carbondale.
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |