{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T07:11:30Z","timestamp":1789542690298,"version":"build-2803163510"},"reference-count":32,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2021,9,13]],"date-time":"2021-09-13T00:00:00Z","timestamp":1631491200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005881","name":"ministry of human capacities","doi-asserted-by":"crossref","award":["EFOP-3.6.3-VEKOP-16-2017-00005"],"award-info":[{"award-number":["EFOP-3.6.3-VEKOP-16-2017-00005"]}],"id":[{"id":"10.13039\/501100005881","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>There are several mathematical models and measurements to determine the efficiency of the digestibility of different feedstuffs. However, there is lack of information regarding the direct methods or measurement techniques used to analyse the physical response of the different parts of the gastrointestinal tract (GIT) of growing pigs to different diets. Smooth muscle electromyography (SMEMG) is a non-invasive method for the measurement of gastrointestinal myoelectrical activity. In the present study, SMEMG methodology has been adapted from laboratory rats to pigs, and the effects of feedstuffs with control (CTR) or experimentally increased (EXP) amounts of fibre were investigated on gastrointestinal tract motility. Nine barrow pigs ((Danish Landrace \u00d7 Danish Yorkshire) \u00d7 Danish Duroc) were used (30 \u00b1 3 kg), and their CTR and EXP feedstuffs contained 29 and 49 g\/kg crude fibre (CF), respectively. Myoelectric activities of the stomach, ileum and caecum were detected in the awake pigs by a pair of electrodes. The recorded myoelectric signals were analysed with fast Fourier transformation (FFT), and the spectra were expressed in GIT section-specific cycles per minutes (cpm) values and the maximum power spectrum density (PsD<jats:sub>max<\/jats:sub>). A significant increase (<jats:italic>P<\/jats:italic> &lt; 0.001) was observed in the value of the PsD<jats:sub>max<\/jats:sub> of the small intestine (20\u201325 cpm) as a consequence of the EXP diet. The PsDmax values of the stomach (3\u20135 cpm) and large intestine (1\u20133 cpm) did not show any significant change in pigs fed the EXP diet. As a direct and non-invasive method, SMEMG is suitable for the rapid evaluation of the effects of diets with different fibre contents on the GIT of non-anaesthetised, free-moving pigs.<\/jats:p>","DOI":"10.1371\/journal.pone.0257311","type":"journal-article","created":{"date-parts":[[2021,9,13]],"date-time":"2021-09-13T17:22:52Z","timestamp":1631553772000},"page":"e0257311","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":6,"title":["Non-invasive smooth muscle electromyography (SMEMG) as a novel monitoring technology of the gastrointestinal tract of awake, free-moving pigs\u2014A pilot study"],"prefix":"10.1371","volume":"16","author":[{"given":"Katalin","family":"Nagy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hedvig","family":"F\u00e9bel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9829-4366","authenticated-orcid":true,"given":"George","family":"Bazar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gy\u00f6rgy","family":"Grosz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R\u00f3bert","family":"G\u00e1sp\u00e1r","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5878-4691","authenticated-orcid":true,"given":"K\u00e1lm\u00e1n","family":"Ferenc Sz\u0171cs","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tam\u00e1s","family":"T\u00f3th","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2021,9,13]]},"reference":[{"key":"pone.0257311.ref001","doi-asserted-by":"crossref","first-page":"2418","DOI":"10.2527\/2001.7992418x","article-title":"Comparative total tract digestibility of dietary energy and nutrients in growing pigs and adult sows","volume":"79","author":"G Le Goff","year":"2001","journal-title":"J Anim Sci"},{"key":"pone.0257311.ref002","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1016\/j.anifeedsci.2003.07.005","article-title":"Technological processes of feed manufacturing affect protein endogenous losses and amino acid availability for body protein deposition in pigs","volume":"113","author":"L Lahaye","year":"2004","journal-title":"Anim Feed Sci Technol"},{"key":"pone.0257311.ref003","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1016\/0301-6226(94)90126-0","article-title":"Effect of body weight on digestive utilization of energy and nutrients of ingredients and diets in pigs","volume":"37","author":"J Noblet","year":"1994","journal-title":"Livest Prod Sci"},{"key":"pone.0257311.ref004","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1016\/j.livsci.2010.06.027","article-title":"Role of dietary fibre source and meal size on the ileal transit of digesta in growing pigs","volume":"133","author":"D Sol\u00e0-Oriol","year":"2010","journal-title":"Livest Sci"},{"key":"pone.0257311.ref005","first-page":"217","article-title":"Systematic modelling in nutrition","volume":"32","author":"D. 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