{"id":{"repo_id":"wvu","oai_identifier":"oai:researchrepository.wvu.edu:etd-2288"},"canonical_url":"https://search.dev.ndltd.org/etd/wvu/oai:researchrepository.wvu.edu:etd-2288","repository":{"repo_id":"wvu","name":"West Virginia University","base_url":"https://researchrepository.wvu.edu/do/oai/"},"display":{"title":"Effect of concentrations of progesterone on follicular development and fertility in beef cows","abstract":"The present study was performed to investigate the effects of low ascending concentrations of progesterone on fertility in lactating beef cattle. Cows on the low ascending progesterone treatment received PGF2alpha from days 3 to 4 after estrus. All cows received PGF2alpha on day 9, and estradiol benzoate on day 11. Cows were inseminated artificially 12 hours after estrus. Concentrations of progesterone were lower in treated versus control cows. Pregnancy rate did not differ between treated and control cows. Pregnancy rate was greater in cows that ovulated a follicle from the right (78%) versus left (52%) ovary (p < 0.01). Low ascending progesterone early in the estrous cycle did not decrease fertility to the same extent seen with extended periods of low progesterone.","abstract_html":"The present study was performed to investigate the effects of low ascending concentrations of progesterone on fertility in lactating beef cattle. Cows on the low ascending progesterone treatment received PGF2alpha from days 3 to 4 after estrus. All cows received PGF2alpha on day 9, and estradiol benzoate on day 11. Cows were inseminated artificially 12 hours after estrus. Concentrations of progesterone were lower in treated versus control cows. Pregnancy rate did not differ between treated and control cows. Pregnancy rate was greater in cows that ovulated a follicle from the right (78%) versus left (52%) ovary (p &lt; 0.01). Low ascending progesterone early in the estrous cycle did not decrease fertility to the same extent seen with extended periods of low progesterone.","abstract_has_math":false,"creators":["Candler, Jason Brian"],"institution":null,"degree_name":"MS","degree_level":"Thesis","degree_discipline":"Animal and Nutritional Sciences","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2001,"date_issued":"2001-08-01T07:00:00Z","date_published":"2001-08-01T07:00:00Z","updated_at":"2026-07-24T06:15:31Z","subjects":["Animal Physiology","Animal sciences"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://researchrepository.wvu.edu/etd/1285"],"render_values":[{"text":"https://researchrepository.wvu.edu/etd/1285","href":"https://researchrepository.wvu.edu/etd/1285","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.33915/etd.1285","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Candler, Jason Brian"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2019-01-17T08:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Animal and Nutritional Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["MS"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Animal Physiology","Animal sciences"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://doi.org/10.33915/etd.1285","https://researchrepository.wvu.edu/etd/1285"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The present study was performed to investigate the effects of low ascending concentrations of progesterone on fertility in lactating beef cattle. Cows on the low ascending progesterone treatment received PGF2alpha from days 3 to 4 after estrus. All cows received PGF2alpha on day 9, and estradiol benzoate on day 11. Cows were inseminated artificially 12 hours after estrus. Concentrations of progesterone were lower in treated versus control cows. Pregnancy rate did not differ between treated and control cows. Pregnancy rate was greater in cows that ovulated a follicle from the right (78%) versus left (52%) ovary (p < 0.01). Low ascending progesterone early in the estrous cycle did not decrease fertility to the same extent seen with extended periods of low progesterone."]},{"key":"dc:title","label":"Title","values":["Effect of concentrations of progesterone on follicular development and fertility in beef cows"]}]}],"canonical_facts":{"dc:creator":["Candler, Jason Brian"],"dc:date.available":["2019-01-17T08:00:00Z"],"dc:description.abstract":["The present study was performed to investigate the effects of low ascending concentrations of progesterone on fertility in lactating beef cattle. Cows on the low ascending progesterone treatment received PGF2alpha from days 3 to 4 after estrus. All cows received PGF2alpha on day 9, and estradiol benzoate on day 11. Cows were inseminated artificially 12 hours after estrus. Concentrations of progesterone were lower in treated versus control cows. Pregnancy rate did not differ between treated and control cows. Pregnancy rate was greater in cows that ovulated a follicle from the right (78%) versus left (52%) ovary (p < 0.01). Low ascending progesterone early in the estrous cycle did not decrease fertility to the same extent seen with extended periods of low progesterone."],"dc:identifier":["https://doi.org/10.33915/etd.1285","https://researchrepository.wvu.edu/etd/1285"],"dc:subject":["Animal Physiology","Animal sciences"],"dc:title":["Effect of concentrations of progesterone on follicular development and fertility in beef cows"],"thesis:degree_discipline":["Animal and Nutritional Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["MS"]},"updated_at":"2026-07-24T06:15:31Z"}