{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/71329"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/71329","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Pathophysiology of Small Testes in Beef Bulls: Histopathological Features of Testes and Epididymides, Seminal Characteristics, and Endocrine Profiles (Testicular Hypoplasia, Degeneration, Breeding Soundness, Scrotal Circumference)","abstract":"Seventeen beef bulls (2 to 3 1/2 years of age) with a scrotal circumference (SC) ranging from 27 to 40.5 cm were used to study the pathophysiology of small testes. All four bulls having a SC of 30 cm) and azoospermic or oligospermic (and having a SC < 30 cm) bulls. However, in the latter group, the mean concentration of testosterone and the response to LH pulses, whether spontaneous or induced, were significantly lower. The fact that these bulls were not deficient in gonadotropins suggested that the impairment in Leydig cell structure and function was caused by local factors, either the factors that caused the tubular damage or those consequent to the tubular damage. Hence, Leydig cell failure in these bulls may not be the primary cause of germinal epithelial loss but an effect.","abstract_html":"Seventeen beef bulls (2 to 3 1/2 years of age) with a scrotal circumference (SC) ranging from 27 to 40.5 cm were used to study the pathophysiology of small testes. All four bulls having a SC of 30 cm) and azoospermic or oligospermic (and having a SC < 30 cm) bulls. However, in the latter group, the mean concentration of testosterone and the response to LH pulses, whether spontaneous or induced, were significantly lower. The fact that these bulls were not deficient in gonadotropins suggested that the impairment in Leydig cell structure and function was caused by local factors, either the factors that caused the tubular damage or those consequent to the tubular damage. Hence, Leydig cell failure in these bulls may not be the primary cause of germinal epithelial loss but an effect.","abstract_has_math":false,"creators":["Veeramachaneni, Durga Nageswara Rao"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Veterinary Medical Science","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-16T06:35:41Z","date_published":"2014-12-16T06:35:41Z","updated_at":"2026-07-22T22:26:04Z","subjects":["Biology, Veterinary Science"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8600336"],"render_values":[{"text":"(UMI)AAI8600336","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/71329","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Veeramachaneni, Durga Nageswara Rao"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-16T06:35:41Z","10000-01-01","1985"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Veterinary Medical Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biology, Veterinary Science"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/71329","(UMI)AAI8600336"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Seventeen beef bulls (2 to 3 1/2 years of age) with a scrotal circumference (SC) ranging from 27 to 40.5 cm were used to study the pathophysiology of small testes. All four bulls having a SC of 30 cm) and azoospermic or oligospermic (and having a SC < 30 cm) bulls. However, in the latter group, the mean concentration of testosterone and the response to LH pulses, whether spontaneous or induced, were significantly lower. The fact that these bulls were not deficient in gonadotropins suggested that the impairment in Leydig cell structure and function was caused by local factors, either the factors that caused the tubular damage or those consequent to the tubular damage. Hence, Leydig cell failure in these bulls may not be the primary cause of germinal epithelial loss but an effect.","These findings indicate that "small testes" in postpubertal beef bulls will very likely have severe lesions and that the primary cause of "small testes" is not a deficiency of peripheral gonadotropins or testosterone.","Made available in DSpace on 2014-12-16T06:35:41Z (GMT). No. of bitstreams: 1 8600336.pdf: 6863686 bytes, checksum: 018f482d003f99104a2c36bf862f265f (MD5) Previous issue date: 1985","Embargo set by: Seth Robbins for item 71495 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","158 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985."]},{"key":"dc:title","label":"Title","values":["Pathophysiology of Small Testes in Beef Bulls: Histopathological Features of Testes and Epididymides, Seminal Characteristics, and Endocrine Profiles (Testicular Hypoplasia, Degeneration, Breeding Soundness, Scrotal Circumference)"]}]}],"canonical_facts":{"dc:creator":["Veeramachaneni, Durga Nageswara Rao"],"dc:date":["2014-12-16T06:35:41Z","10000-01-01","1985"],"dc:description":["Seventeen beef bulls (2 to 3 1/2 years of age) with a scrotal circumference (SC) ranging from 27 to 40.5 cm were used to study the pathophysiology of small testes. All four bulls having a SC of 30 cm) and azoospermic or oligospermic (and having a SC < 30 cm) bulls. However, in the latter group, the mean concentration of testosterone and the response to LH pulses, whether spontaneous or induced, were significantly lower. The fact that these bulls were not deficient in gonadotropins suggested that the impairment in Leydig cell structure and function was caused by local factors, either the factors that caused the tubular damage or those consequent to the tubular damage. Hence, Leydig cell failure in these bulls may not be the primary cause of germinal epithelial loss but an effect.","These findings indicate that "small testes" in postpubertal beef bulls will very likely have severe lesions and that the primary cause of "small testes" is not a deficiency of peripheral gonadotropins or testosterone.","Made available in DSpace on 2014-12-16T06:35:41Z (GMT). No. of bitstreams: 1 8600336.pdf: 6863686 bytes, checksum: 018f482d003f99104a2c36bf862f265f (MD5) Previous issue date: 1985","Embargo set by: Seth Robbins for item 71495 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","158 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985."],"dc:identifier":["http://hdl.handle.net/2142/71329","(UMI)AAI8600336"],"dc:subject":["Biology, Veterinary Science"],"dc:title":["Pathophysiology of Small Testes in Beef Bulls: Histopathological Features of Testes and Epididymides, Seminal Characteristics, and Endocrine Profiles (Testicular Hypoplasia, Degeneration, Breeding Soundness, Scrotal Circumference)"],"dc:type":["text"],"thesis:degree_discipline":["Veterinary Medical Science"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:04Z"}