{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T17:49:03Z","timestamp":1787161743059,"version":"build-2736575974"},"reference-count":68,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T00:00:00Z","timestamp":1656374400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The aim of the present study was to evaluate seasonal changes in testes size, serum testosterone (T) levels and sperm production characteristics of 24 adult (2\u20133\u2009years old) rams of meat breeds: Charollais (\n                    <jats:italic>n<\/jats:italic>\n                    \u00a0=\u00a06), Ile de France (\n                    <jats:italic>n<\/jats:italic>\n                    \u00a0=\u00a06), Dorset (Polled) (\n                    <jats:italic>n<\/jats:italic>\n                    \u00a0=\u00a05) and Dorper (Dorper,\n                    <jats:italic>n<\/jats:italic>\n                    \u00a0=\u00a07). Semen was collected with artificial vagina using a female in spontaneous oestrus (September\u2013November, breeding season, BS) or a female with induced oestrus (March\u2013July, non\u2010breeding season, NBS). A total of 672 ejaculates were examined. Jugular vein blood was collected to determine testosterone levels during BS and NBS, and serum was extracted. Results of the present study indicate that there was no significant change in parameters such as body weight (kg) and testes length, both right and left, during BS and NBS, irrespective of the breed. The remaining metrics of testes differ in varying degrees between breeds of rams (with the exception of the Dorper breed) between BS and NBS. No significant variation in these parameters was found in Dorper rams. For all breeds, season had a statistically significant effect on important parameters such as total sperm count and progressive sperm motility after thawing. There was also significant seasonal variation in ejaculate volume across the three breeds, excluding il\u2010de\u2010France rams. The most constant was the sperm concentration, which was unchanged in BS and NBS in the three breeds, excluding Dorset rams, which showed a slightly significant decrease in this indicator in the non\u2010breeding season. The serum content of the major male hormone testosterone (T) in rams of all breeds showed significant changes between BS and NBS, decreasing by a highly significant amount in the non\u2010breeding season.\n                  <\/jats:p>","DOI":"10.1111\/rda.14183","type":"journal-article","created":{"date-parts":[[2022,6,15]],"date-time":"2022-06-15T00:19:27Z","timestamp":1655252367000},"page":"1125-1135","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Seasonal changes in testis size, testosterone levels and sperm production quality in meat rams"],"prefix":"10.1111","volume":"57","author":[{"given":"Magomet","family":"Aibazov","sequence":"first","affiliation":[{"name":"Russian State Agrarian University Timiryazevskaya Agricultural Academy  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vladimir","family":"Trukhachev","sequence":"additional","affiliation":[{"name":"Russian State Agrarian University Timiryazevskaya Agricultural Academy  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marina","family":"Selionova","sequence":"additional","affiliation":[{"name":"Russian State Agrarian University Timiryazevskaya Agricultural Academy  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9033-7552","authenticated-orcid":false,"given":"Viktor","family":"Malorodov","sequence":"additional","affiliation":[{"name":"Russian State Agrarian University Timiryazevskaya Agricultural Academy  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,6,28]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0921-4488(00)00137-1"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0007-1935(96)80076-5"},{"issue":"9","key":"e_1_2_9_4_1","article-title":"Dorper and dorper\u2009\u00d7\u2009Pelibuey ewes do not show season effect on reproductive activity under subhumid tropical conditions","volume":"31","author":"Ak\u00e9\u2010L\u00f3pez J. 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