Relationship between leptin content, metabolic hormones and fat deposition in three beef cattle breeds. The Veterinary Journal (2008) 177 273-278

Marie Daix, Cécile Pirotte, Jean-Loup Bister, Fabienne Wergifosse, C Cuvelier, JF Cabaraux, Nathalie Kirschvink, L Istasse, Raymond Paquay

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Résumé

The aim of the study was to determine if cattle breeds differing in their carcass characteristics also differ in the profiles of their leptin and metabolic hormones. Three breeds, Belgian Blue (BB) (n=12), Limousin (L) (n=12) and Aberdeen Angus (AA) (n=12) with varying ability to deposit fat and protein were compared. Blood, muscle and subcutaneous (SC) adipose tissue were sampled. Animal performance, carcass and meat characteristics were determined as well as plasma leptin concentration, leptin gene expression in SC adipose tissue, leptin-receptor gene expression in SC adipose tissue and plasma concentration of insulin, tri-iodothyronin (T3), thyroxin (T4) and cortisol. The BB bulls showed the lowest values of leptin gene expression (P
langue originaleAnglais
Etat de la publicationPublié - 2008

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