Realimentation of nutrient restricted pregnant beef cows impacts proteomes of foetal muscular and adipose tissues

摘要

Producing meat animals with adequate muscular and adipose masses (i.e. lean-to-fat ratio) is an economic challenge for the beef industry. The lean-to-fat ratio is the result of a dynamic balance between the number and size of muscular and adipose cells partly set during the foetal life because the number of muscle fibres is fixed before the end of gestation in bovine. Maternal nutrition as a lever of foetal lean-to-fat ratio has been rarely addressed in bovine (Bonnet et al., 2010). We aimed to evaluate the effects of nutrient restriction during early gestation followed or not by realimentation to mid-gestation both on the molecular events related to adipose tissue (AT) and on muscle growth.