{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T19:44:38Z","timestamp":1788551078804,"version":"build-2803163510"},"reference-count":61,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T00:00:00Z","timestamp":1737504000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003664","name":"Forest Science Technology R&amp;D Program","doi-asserted-by":"publisher","award":["2020193C10-2022-BA01"],"award-info":[{"award-number":["2020193C10-2022-BA01"]}],"id":[{"id":"10.13039\/501100003664","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003664","name":"Forest Science Technology R&amp;D Program","doi-asserted-by":"publisher","award":["RS-2024-00350745"],"award-info":[{"award-number":["RS-2024-00350745"]}],"id":[{"id":"10.13039\/501100003664","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Research Foundation (NRF) of the Korean government","award":["2020193C10-2022-BA01"],"award-info":[{"award-number":["2020193C10-2022-BA01"]}]},{"name":"National Research Foundation (NRF) of the Korean government","award":["RS-2024-00350745"],"award-info":[{"award-number":["RS-2024-00350745"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Reducing the detrimental effects of heat stress (HS) in poultry is essential to minimize production losses. The present study evaluates the effects of dietary polyphenols prepared from underutilized wood byproducts on the growth, gut health, and cecal microbiota in broilers subjected to acute heat stress (AHS). One hundred eight one-day-old Indian River broilers were fed with 0%, 0.5%, or 1% polyphenols from shredded, steam-exploded pine particles (PSPP) in their diet. On the 37th day, forty birds were equally distributed among four groups containing either a control diet at thermoneutral temperatures (NT0%) or AHS temperatures with 0% (AHS0%), 0.5% (AHS0.5%), and 1% (AHS1%) PSPP-supplemented diets. The temperature in the NT room was maintained at 21.0 \u00b0C, while, in the AHS room, it was increased to 31 \u00b0C. AHS negatively influenced performance parameters and increased rectal temperature (RT) in broilers. The AHS0% group showed a higher expression of NOX4, HSP-70, and HSP-90 genes, while the expression was lower in PSPP-supplemented birds. In the jejunum, mRNA expression of SOD was increased in all the birds under AHS compared to NT. The expression of the CLDN1 and ZO2 genes was increased in AHS0%, while that of the ZO1 and MUC2 genes was increased in PSPP-supplemented birds. HS tends to increase TLR2 and TLR4 gene expression in chickens. The significantly modified genera were Bariatricus, Sporobacter, Sporanaerobacter, and Natranaerovirga. Concludingly, AHS negatively influences the performance parameters, RT, stress, gut-health-related genes, and pathogenic penetration, but PSPP supplementation reduces its bad impact by overcoming the stress and gut-health-related genes, increasing favorable bacterial abundance and reducing pathogenic penetration in chickens.<\/jats:p>","DOI":"10.3390\/microorganisms13020235","type":"journal-article","created":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T07:55:32Z","timestamp":1737532532000},"page":"235","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Alleviation of Acute Heat Stress in Broiler Chickens by Dietary Supplementation of Polyphenols from Shredded, Steam-Exploded Pine Particles"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3598-7872","authenticated-orcid":false,"given":"Akshat","family":"Goel","sequence":"first","affiliation":[{"name":"Division of Animal Science, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chris-Major","family":"Ncho","sequence":"additional","affiliation":[{"name":"Division of Animal Science, Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chae-Mi","family":"Jeong","sequence":"additional","affiliation":[{"name":"Division of Animal Science, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Division of Applied Life Sciences (BK21 Four Program), Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7335-5246","authenticated-orcid":false,"given":"Vaishali","family":"Gupta","sequence":"additional","affiliation":[{"name":"Division of Animal Science, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Division of Applied Life Sciences (BK21 Four Program), Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji-Young","family":"Jung","sequence":"additional","affiliation":[{"name":"Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Department of Environmental Materials Science, Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2832-5830","authenticated-orcid":false,"given":"Si-Young","family":"Ha","sequence":"additional","affiliation":[{"name":"Department of Environmental Materials Science, Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jae-Kyung","family":"Yang","sequence":"additional","affiliation":[{"name":"Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Department of Environmental Materials Science, Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang-Ho","family":"Choi","sequence":"additional","affiliation":[{"name":"Division of Animal Science, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea"},{"name":"Division of Applied Life Sciences (BK21 Four Program), Gyeongsang National University, Jinju 52828, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Ncho, C.M., Goel, A., Gupta, V., Jeong, C.M., and Choi, Y.H. 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