{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T21:48:25Z","timestamp":1791668905930,"version":"4.3.4"},"reference-count":78,"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":"Probiotech International Inc"}],"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 study objectives were to determine whether a phytogenic supplement reduced physiological stress in heat-stressed (HS) gestating sows and to evaluate how HS alters maternal growth responses and postweaning growth and stress responses in their piglets. Twenty-six pregnant Large White\u2009\u00d7\u2009Landrace sows (parity = 2.0\u2009\u00b1\u20091.2) were exposed to thermoneutral (TN; 20.72\u2009\u00b1\u20090.97\u2009\u00b0C) or cyclical HS (26 to 36\u2009\u00b0C) from gestation d 5 to 58, then maintained at TN until farrowing. Sows received ad libitum water (C) or ad libitum water with a phytogenic supplement (P; 0.2\u2009mL\/L) from gestation d 5 to 58 yielding treatments: TNC (n\u2009=\u20095), TNP (n\u2009=\u20096), HSC (n\u2009=\u20099), HSP (n\u2009=\u20096). During gestation, respiration rates (RR) and ear (Tear), shoulder (Tshoulder), rump (Trump), and tail (Ttail) temperatures were measured daily (0800, 1200, 1600, 2000\u2009h). Vaginal temperatures were measured in 10-min intervals. Sow body weight (BW) was measured weekly to calculate average daily gain (ADG). All sows consumed the full daily feed allotment (2.72\u2009kg\/d) and feed efficiency (G:F) was calculated using ADG: 2.72\u2009kg\/d. Sow back fat was assessed on gestation d 4 and 58. Piglets were weaned and transported on d 19.6\u2009\u00b1\u20091.2 of age then allotted into nursery pens (n\u2009=\u20094 pigs\/pen; n\u2009=\u20099 TNC, 7 TNP, 10 HSC, and 10 HSP pens). Blood samples were obtained (n\u2009=\u20092 pigs\/pen) pre- and post-transport, and on d 1, 3, 7, 14, 21, and 28 post-weaning for cortisol analyses. Piglet BW and feed intake were assessed weekly. Sow, litter, pen, or piglets were the experimental units. Sow RR was reduced (P\u2009&amp;lt;\u20090.01; 16.1%) in HSP versus HSC sows, and sow Tear, Tshoulder, Trump, and Ttail were reduced (P\u2009&amp;lt;\u20090.01; \u22120.53, \u22120.42, \u22120.56, and \u22120.30\u00b0C, respectively) in HSP versus HSC sows. Sow BW, ADG, G:F, and back fat were greater (P\u2009&amp;lt;\u20090.01; 3.41, 26.8, 28.6, and 292.9%, respectively) in HS versus TN sows. More piglets were weaned (P\u2009&amp;lt;\u20090.01; 27.0%) in HSP versus HSC, TNC, and TNP litters. Cortisol was reduced (P\u2009=\u20090.03; 6.65%) in HSP versus HSC litters but similar in TNC and TNP litters. Nursery ADG was greater (P\u2009=\u20090.05) for in utero (IU) TNC versus IUHSC (+60\u2009g\/d), IUHSP (+100\u2009g\/d), and IUTNP (+90\u2009g\/d) piglets, and IUHSC piglet ADG was greater than IUTNP (+30\u2009g\/d) and IUHSP (+40\u2009g\/d) piglets. In conclusion, HS increased sow growth rate, while P reduced sow RR and skin temperature but had limited effects on stress biomarkers in sows or IUHS offspring, with only marginal improvement in piglet cortisol and no growth benefit.<\/jats:p>","DOI":"10.1093\/jas\/skag295","type":"journal-article","created":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T13:27:01Z","timestamp":1789651621000},"source":"Crossref","is-referenced-by-count":0,"title":["Gestational heat stress and phytogenic supplementation influence sow growth, bioenergetics, thermoregulation, and subsequent offspring resilience"],"prefix":"10.1093","volume":"104","author":[{"given":"Mekenzie R","family":"Cecil","sequence":"first","affiliation":[{"name":"Department of Animal Sciences, Purdue University , West Lafayette, IN 47907,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian T","family":"Richert","sequence":"additional","affiliation":[{"name":"Department of Animal Sciences, Purdue University , West Lafayette, IN 47907,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caitlyn R","family":"Sullivan","sequence":"additional","affiliation":[{"name":"Division of Animal Sciences, University of Missouri , Columbia, MO 65211,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MaryKate H","family":"Byrd","sequence":"additional","affiliation":[{"name":"Department of Animal Sciences, Purdue University , West Lafayette, IN 47907,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amy L","family":"Petry","sequence":"additional","affiliation":[{"name":"Division of Animal Sciences, University of Missouri , Columbia, MO 65211,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5773-4142","authenticated-orcid":false,"given":"Jay 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