{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T03:18:49Z","timestamp":1779333529207,"version":"3.51.4"},"reference-count":29,"publisher":"Oxford University Press (OUP)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In experiment 1, 150 calf-fed Holstein steers (119\u00a0\u00b1\u00a06\u00a0kg) were used to evaluate the effects of level of supplemental condensed tannin (0, 14, and 28\u00a0g\/kg diet DM) in a conventional steam-flaked corn-based growing-finishing diet on feedlot growth performance. There were no treatment effects on growth performance during the initial 56-d period. However, during the subsequent 56-d period, supplemental condensed tannin tended to increase average daily gain (ADG; linear effect, P = 0.09). The increase in ADG was consistent with the tendency for increased dry matter intake (DMI; linear effect, P = 0.08). Hence, differences in gain efficiency during the second 56-d period were not appreciably affected (P = 0.80). Supplemental condensed tannin did not affect overall (112-d) ADG, DMI, gain efficiency, or dietary NE. In a second experiment, six Holstein steers (179.4\u00a0\u00b1\u00a07.9\u00a0kg) with cannulas in the rumen and proximal duodenum were used in a replicated 3\u00a0\u00d7\u00a03 Latin square design to evaluate treatment effects on characteristics of ruminal and total tract digestion. Treatments were the same as in Trial 1. Tannin supplementation decreased (linear effect, P = 0.03) ruminal OM digestion and tended to decrease (linear effect, P = 0.06) ruminal feed N degradation. Tannin supplementation decreased (linear effect, P = 0.03) ruminal pH, but did not affect (P &amp;gt; 0.20) ruminal molar proportions of volatile fatty acids and estimated methane production. In current study, supplemental tannin had marginal effects on overall growth performance of calf-fed Holstein steers, but reduced ruminal, postruminal, and total tract nitrogen digestion.<\/jats:p>","DOI":"10.1093\/tas\/txac024","type":"journal-article","created":{"date-parts":[[2022,2,9]],"date-time":"2022-02-09T07:01:22Z","timestamp":1644390082000},"source":"Crossref","is-referenced-by-count":6,"title":["Influence of supplemental condensed tannins on initial 112-d feedlot growth-performance and characteristics of digestion of calf-fed Holstein steers"],"prefix":"10.1093","volume":"6","author":[{"given":"Martin F","family":"Montano","sequence":"first","affiliation":[{"name":"Department of Nutrition and Biotechnology of Ruminants, Instituto de Investigaciones en Ciencias Veterinarias-UABC, Mexicali, Baja California 21100, M\u00e9xico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1620-6831","authenticated-orcid":false,"given":"Pedro H V","family":"Carvalho","sequence":"additional","affiliation":[{"name":"Department of Animal Science, University of California, Davis, CA 95616, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan O","family":"Chirino-Romero","sequence":"additional","affiliation":[{"name":"Department of Nutrition and Biotechnology of Ruminants, Instituto de Investigaciones en Ciencias Veterinarias-UABC, Mexicali, Baja California 21100, M\u00e9xico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brooke C","family":"Latack","sequence":"additional","affiliation":[{"name":"Cooperative Extension, Division of Agriculture and Natural Resources, University of California, Holtville, CA 92250, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaime","family":"Salinas-Chavira","sequence":"additional","affiliation":[{"name":"Department of Animal Nutrition, Facultad de Medicina Veterinaria y Zootecnia, Universidad Aut\u00f3noma de Tamaulipas, Cd. 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