Document Type
Thesis - Open Access
Award Date
1969
Degree Name
Master of Science (MS)
Department / School
Wildlife and Fisheries Science
Abstract
A study of the ovulated follicle technique for determining egg production in pheasants was conducted during 1967 - 1969. Evidence indicated collection of wild hens for follicle counts should be between 5 and 14 weeks after cessation of laying. Questionable follicles encountered should be considered ovulated follicles and included in the counts. Most questionable follicles were believed to originate from ovulated atretic follicles that were harder to identify because of their particular stage of regression. The influence of freezing on atretic follicle counts was studied, and no adverse effects were found. A technique was developed for selectively staining atretic follicles. Faded or obscure atretic follicles were more easily identified when stained. Counts of ovulated atretic follicles from stained material were significantly more accurate than counts from unstained material. The accuracy of the technique 1'/as sufficiently demonstrated to justify its use for the prediction of mean egg production. Variability between counts of different investigators was not significant.
Library of Congress Subject Headings
Pheasants--Eggs--Counting
Pheasants--Fertility
Description
Includes bibliographical references (page 40)
Format
application/pdf
Number of Pages
51
Publisher
South Dakota State University
Rights
No Copyright - Non-Commercial Use Only
http://rightsstatements.org/vocab/NoC-NC/1.0/
Recommended Citation
Allen, C. Denis, "Evaluation of the Ovulated Follicle Technique as a means of Determining Pheasant Production" (1969). Electronic Theses and Dissertations. 7.
https://openprairie.sdstate.edu/etd/7