{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T00:47:01Z","timestamp":1769042821331,"version":"3.49.0"},"reference-count":28,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2013,11,18]],"date-time":"2013-11-18T00:00:00Z","timestamp":1384732800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["beva.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Equine Veterinary Journal"],"published-print":{"date-parts":[[2014,7]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Reasons for performing study<\/jats:title>\n                    <jats:p>Obesity and gastric ulceration are highly prevalent in horses. Management modifications for preventing squamous gastric ulceration include frequent feeding and free access to pasture; however, these practices may predispose horses to obesity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>\n                      To compare the percentage of hay consumed, intragastric\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      and horse activity between feeding from the ground and a hay grid feeder.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study design<\/jats:title>\n                    <jats:p>Crossover experimental study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      electrode was inserted into the stomach to record the intragastric\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      for 48\u2009h. Horses received 1% of their body weight in grass hay twice a day. Horses were assigned to be fed from the ground or a commercial hay grid feeder for 24\u2009h and then switched to the opposite protocol for an additional 24\u2009h. Horses were continuously video\u2010recorded and the percentage of time spent eating or drinking, walking or standing, and lying down were calculated. Two point data were compared by paired\n                      <jats:italic>t<\/jats:italic>\n                      test and\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      over time was compared by repeated measures\n                      <jats:styled-content style=\"fixed-case\">ANOVA<\/jats:styled-content>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Horses consumed significantly greater amounts of grass hay when fed on the ground compared with a hay grid feeder (n = 9; P&lt;0.001). There were no significant differences between the groups for mean intragastric\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      values (n = 6; P = 0.97), mean intragastric\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      over time (n = 6; P = 0.45) the length of time the\n                      <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\n                      was below 4.0 (n = 6; P = 0.54), and the percentage of time horses spent eating or drinking (n = 9; P = 0.52), walking or standing (n = 9; P = 0.3), or lying down (n = 9; P = 0.4). Within each group horses spent more time eating during the day compared with the night (n = 9; hay grid feeder P = 0.003; ground feeding P = 0.007).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The hay grid feeder studied may be used to reduce the amount of hay ingested by horses without reducing the time horses spend eating.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/evj.12175","type":"journal-article","created":{"date-parts":[[2013,9,2]],"date-time":"2013-09-02T04:30:53Z","timestamp":1378096253000},"page":"484-487","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["The effect of a hay grid feeder on feed consumption and measurement of the gastric\n                    <scp>pH<\/scp>\n                    using an intragastric electrode device in horses: A preliminary report"],"prefix":"10.1111","volume":"46","author":[{"given":"F.","family":"Aristizabal","sequence":"first","affiliation":[{"name":"The William R. Pritchard Veterinary Medical Teaching Hospital University of California  Davis USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Nieto","sequence":"additional","affiliation":[{"name":"Comparative Gastrointestinal Laboratory Department of Veterinary Surgical and Radiological Sciences University of California  Davis USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Yamout","sequence":"additional","affiliation":[{"name":"The William R. Pritchard Veterinary Medical Teaching Hospital University of California  Davis USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Snyder","sequence":"additional","affiliation":[{"name":"Comparative Gastrointestinal Laboratory Department of Veterinary Surgical and Radiological Sciences University of California  Davis USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2013,11,18]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/evj.12008"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1136\/vr.162.18.590"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.2746\/042516408X342975"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1177\/193229681200600307"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1177\/193229680900300119"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.2460\/javma.228.10.1538"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2042-3306.2011.00541.x"},{"key":"e_1_2_11_9_1","doi-asserted-by":"crossref","first-page":"1599","DOI":"10.2460\/ajvr.1996.57.11.1599","article-title":"Effects of intermittent feed deprivation, intermittent feed deprivation with ranitidine administration, and stall confinement with ad libitum access to hay on gastric ulceration in horses","volume":"57","author":"Murray M.J.","year":"1996","journal-title":"Am. 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