{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T15:03:46Z","timestamp":1781967826399,"version":"3.54.5"},"reference-count":108,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2023,12,4]],"date-time":"2023-12-04T00:00:00Z","timestamp":1701648000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Institut Fran\u00e7ais du Cheval et de l\u2019Equitation","award":["49400"],"award-info":[{"award-number":["49400"]}]},{"name":"Institut Fran\u00e7ais du Cheval et de l\u2019Equitation","award":["75009"],"award-info":[{"award-number":["75009"]}]},{"name":"Fonds Eperon","award":["49400"],"award-info":[{"award-number":["49400"]}]},{"name":"Fonds Eperon","award":["75009"],"award-info":[{"award-number":["75009"]}]},{"name":"FOETALIM","award":["49400"],"award-info":[{"award-number":["49400"]}]},{"name":"FOETALIM","award":["75009"],"award-info":[{"award-number":["75009"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Sciences"],"abstract":"<jats:p>In horses, the prevalence of obesity is high and associated with serious metabolic pathologies. Being a broodmare has been identified as a risk factor for obesity. In other species, maternal obesity is known to affect the development of the offspring. This article is a follow-up study of previous work showing that Obese mares (O, n = 10, body condition score &gt; 4.25 at insemination) were more insulin resistant and presented increased systemic inflammation during pregnancy compared to Normal mares (N, n = 14, body condition score &lt; 4 at insemination). Foals born to O mares were more insulin-resistant, presented increased systemic inflammation, and were more affected by osteoarticular lesions. The objective of the present study was to investigate the effect of maternal obesity on placental structure and function, as well as the fatty acid profile in the plasma of mares and foals, colostrum, and milk until 90 days of lactation, which, to our knowledge, has been poorly studied in the horse. Mares from both groups were fed the same diet during pregnancy and lactation. During lactation, mares were housed in pasture. A strong heat wave, followed by a drought, occurred during their 2nd and 3rd months of lactation (summer of 2016 in the Limousin region, France). In the present article, term placental morphometry, structure (stereology), and gene expression (RT-qPCR, genes involved in nutrient transport, growth, and development, as well as vascularization) were studied. Plasma of mares and their foals, as well as colostrum and milk, were sampled at birth, 30 days, and 90 days of lactation. The fatty acid composition of these samples was measured using gas chromatography. No differences between the N and O groups were observed for term placental morphometry, structure, or gene expression. No difference in plasma fatty acid composition was observed between groups in mares. The plasma fatty acid profile of O foals was more pro-inflammatory and indicated an altered placental lipid metabolism between birth and 90 days of age. These results are in line with the increased systemic inflammation and altered glucose metabolism observed until 18 months of age in this group. The colostrum fatty acid profile of O mares was more pro-inflammatory and indicated an increased transfer and\/or desaturation of long-chain fatty acids. Moreover, O foals received a colostrum poorer in medium-chain saturated fatty acid, a source of immediate energy for the newborn that can also play a role in immunity and gut microbiota development. Differences in milk fatty acid composition indicated a decreased ability to adapt to heat stress in O mares, which could have further affected the metabolic development of their foals. In conclusion, maternal obesity affected the fatty acid composition of milk, thus also influencing the foal\u2019s plasma fatty acid composition and likely participating in the developmental programming observed in growing foals.<\/jats:p>","DOI":"10.3390\/vetsci10120691","type":"journal-article","created":{"date-parts":[[2023,12,4]],"date-time":"2023-12-04T12:15:14Z","timestamp":1701692114000},"page":"691","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Obesity during Pregnancy in the Horse: Effect on Term Placental Structure and Gene Expression, as Well as Colostrum and Milk Fatty Acid Concentration"],"prefix":"10.3390","volume":"10","author":[{"given":"Morgane","family":"Robles","sequence":"first","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"},{"name":"Institut Polytechnique Unilasalle, 76130 Mont-Saint-Aignan, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Delphine","family":"Rousseau-Ralliard","sequence":"additional","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C\u00e9dric","family":"Dubois","sequence":"additional","affiliation":[{"name":"Institut Fran\u00e7ais du Cheval et de l\u2019Equitation, Station Exp\u00e9rimentale de la Valade, 19370 Chamberet, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tiphanie","family":"Josse","sequence":"additional","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c9milie","family":"Nouveau","sequence":"additional","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michele","family":"Dahirel","sequence":"additional","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laurence","family":"Wimel","sequence":"additional","affiliation":[{"name":"Institut Fran\u00e7ais du Cheval et de l\u2019Equitation, Station Exp\u00e9rimentale de la Valade, 19370 Chamberet, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1559-5476","authenticated-orcid":false,"given":"Anne","family":"Couturier-Tarrade","sequence":"additional","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4581-6092","authenticated-orcid":false,"given":"Pascale","family":"Chavatte-Palmer","sequence":"additional","affiliation":[{"name":"BREED, Domaine de Vilvert, Universit\u00e9 Paris Saclay, UVSQ, INRAE, 78350 Jouy en Josas, France"},{"name":"BREED, Ecole Nationale V\u00e9t\u00e9rinaire d\u2019Alfort, 94700 Maisons-Alfort, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1016\/j.theriogenology.2016.01.028","article-title":"Management of the Pregnant Mare and Long-Term Consequences on the Offspring","volume":"86","author":"Peugnet","year":"2016","journal-title":"Theriogenology"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1016\/j.cveq.2021.01.001","article-title":"Nutrition of Broodmares","volume":"37","author":"Robles","year":"2021","journal-title":"Vet. 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