{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T20:53:27Z","timestamp":1780520007655,"version":"3.54.1"},"reference-count":75,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2025,8,1]],"date-time":"2025-08-01T00:00:00Z","timestamp":1754006400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biology"],"abstract":"<jats:p>To achieve the goals of productivity and sustainability across diverse livestock systems, reproductive factors play a pivotal role. Historically, reproductive research has primarily focused on females, as they are responsible for maintaining pregnancy and delivering offspring following oocyte fertilization. However, since the early 2000s, the biological significance of sperm RNAs has been increasingly recognized in various livestock species. These RNAs contribute both genetically and epigenetically at the time of fertilization and during early embryonic development. Multiple types of sperm RNA have been identified in bovine, porcine, ovine, buffalo, and caprine spermatozoa. Notably, transcriptomic profiling has shown potential to differentiate between high- and low-fertility males, even when conventional semen quality values appear normal in both groups. This opens the possibility for more accurate identification of highly fertile sires. Nevertheless, a definitive marker or set of markers has yet to be established, likely due to the transcriptome\u2019s sensitivity to environmental conditions and to the variability in evaluation methodologies. Therefore, global scientific efforts should aim to establish standardized, robust protocols, as sperm RNA represents a promising avenue for enhancing the sustainability of animal production systems.<\/jats:p>","DOI":"10.3390\/biology14080969","type":"journal-article","created":{"date-parts":[[2025,8,7]],"date-time":"2025-08-07T10:58:26Z","timestamp":1754564306000},"page":"969","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Revisiting Male Fertility in Livestock: The Case of Bull Sperm RNA"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-3640-2366","authenticated-orcid":false,"given":"Rene A.","family":"Ram\u00edrez-Sosa","sequence":"first","affiliation":[{"name":"Facultad de Zootecnia y Ecolog\u00eda, Universidad Aut\u00f3noma de Chihuahua, Chihuahua 31000, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6562-5875","authenticated-orcid":false,"given":"Francisco J.","family":"Jahuey-Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Facultad de Zootecnia y Ecolog\u00eda, Universidad Aut\u00f3noma de Chihuahua, Chihuahua 31000, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6721-6987","authenticated-orcid":false,"given":"Monserrath","family":"Felix-Portillo","sequence":"additional","affiliation":[{"name":"Facultad de Zootecnia y Ecolog\u00eda, Universidad Aut\u00f3noma de Chihuahua, Chihuahua 31000, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6177-6513","authenticated-orcid":false,"given":"Jos\u00e9 A.","family":"Mart\u00ednez-Quintana","sequence":"additional","affiliation":[{"name":"Facultad de Zootecnia y Ecolog\u00eda, Universidad Aut\u00f3noma de Chihuahua, Chihuahua 31000, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,1]]},"reference":[{"key":"ref_1","first-page":"20","article-title":"Statistics of embryo production and transfer in domestic farm animals: The main trends for the world embryo industry still stand","volume":"41","author":"Viana","year":"2023","journal-title":"Embryo Technol. 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