Sunflower-seed oil, rapidly-degradable starch, and adiposity up-regulate leptin gene expression in lactating goats
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2009
- handle: 10670/1.w3u69h
- hal: hal-02653529
- doi: 10.1016/j.domaniend.2009.03.002
- PRODINRA: 28699
- WOS: 000267735700004
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.domaniend.2009.03.002
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Muriel Bonnet et al., « Sunflower-seed oil, rapidly-degradable starch, and adiposity up-regulate leptin gene expression in lactating goats », HALSHS : archive ouverte en Sciences de l’Homme et de la Société, ID : 10.1016/j.domaniend.2009.03.002
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Résumé
We conducted experiments to evaluate the effects of lipid supplementation and the nature of starchy concentrate on the regulation of leptin synthesis in lactating goats. Multiparous goats in mid- to late lactation received diets based on different forages and containing plant oil or seeds rich in either 18:1c9, 18:2n-6 or 18:3n-3 corresponding to 3%-7% dry matter (DM) as lipid supplements, or diets based on concentrate as either rapidly or slowly degradable starch. The isoenergetic replacement of a part of the concentrate by either oleic sunflower-seed oil, formaldehyde-treated linseeds, or linseed oil did not modify leptinemia and the leptin mRNA concentration in adipose tissues, suggesting a lack of effect of 18:1c9, 18:3n-3, or their biohydrogenation products. Conversely, leptinemia and the leptin mRNA abundance were increased (by 20% and 140%, respectively, P