{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T18:13:48Z","timestamp":1783620828573,"version":"3.55.0"},"reference-count":80,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"name":"Multistate","award":["NEBG26-202\/W4112"],"award-info":[{"award-number":["NEBG26-202\/W4112"]}]},{"name":"UN Collaboration Research"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,1,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The effects of organic zinc supplementation on performance, whole blood parameters, and ovarian function of heat-stressed female Awassi lambs raised under high summer ambient temperature was determined. Twenty-four female lambs (\u223c10\u2009months of age; live weight\u2009=\u200927.7\u2009kg) were randomly assigned to one of two dietary treatments: 1) a control diet (including zinc oxide 10\u2009mg\/kg dry matter (DM); n\u2009=\u200912) or 2) a control diet supplemented with 30\u2009mg\/kg DM of organic zinc (n\u2009=\u200912) for 5\u2009weeks during natural summer conditions (ambient temperature range\u2009=\u200925\u201346\u00b0C and temperature humidity index (THI) range\u2009=\u200972.6\u201392.2%). Relative to control, organic zinc supplementation improved growth performance (higher final live weight, P\u2009=\u20090.01; greater weight gain, P\u2009\u2264\u20090.001) and carcass characteristics (increased carcass weight, P\u2009\u2264\u20090.001; higher dressing percentage, P\u2009\u2264\u20090.001), along with better thermoregulation (lower rectal temperature (RT) by 1.7\u00b0C, P\u2009\u2264\u20090.01). Whole blood analysis revealed that organic zinc supplementation increased red blood cell count (P\u2009=\u20090.02), concentration of hemoglobin (P\u2009=\u20090.01), albumin, total protein, and glucose (P\u2009\u2264\u20090.01) while decreasing white blood cells (P\u2009=\u20090.02) and lymphocyte counts (P\u2009=\u20090.02). The organic zinc supplementation group had 1.5-fold greater follicular fluid estradiol concentrations (P\u2009\u2264\u20090.001) and elevated mRNA expression of key genes (StAR, FSHR, CYP19A1, and FOS; P\u2009\u2264\u2009\u20090.001) involved in steroidogenesis. The organic zinc supplementation also enhanced follicle development, increasing surface antral follicle counts (P\u2009\u2264\u20090.001) and number of secondary (P\u2009\u2264\u20090.05). Additionally, it reduced ovarian fibrosis (P\u2009\u2264\u20090.001) and increased ovarian size (P\u2009=\u20090.01) and weight (P\u2009=\u20090.01). In summary, organic zinc supplementation effectively mitigated the high summer ambient temperature in Awassi female lambs by improving thermoregulation and ovarian function, thereby benefiting production and reproductive performance.<\/jats:p>","DOI":"10.1093\/jas\/skag191","type":"journal-article","created":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T11:42:34Z","timestamp":1781782954000},"source":"Crossref","is-referenced-by-count":0,"title":["Supplementing organic zinc enhances growth and blood parameters to preserve ovarian function of Awassi lambs raised in a high summer temperature environment"],"prefix":"10.1093","volume":"104","author":[{"given":"Mohamed A","family":"Abedal-Majed","sequence":"first","affiliation":[{"name":"Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohannad","family":"Abuajamieh","sequence":"additional","affiliation":[{"name":"Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hosam H","family":"Titi","sequence":"additional","affiliation":[{"name":"Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mufeed A","family":"Alnimer","sequence":"additional","affiliation":[{"name":"Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohmmad","family":"Al-Qaisi","sequence":"additional","affiliation":[{"name":"Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, 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