Abstract:

The effect of nutrition on ruminant milk fat yield and composition has largely been investigated in cows and goats,but the mechanism involving was largely unknown. This article reviews the present knowledge on the main lipogenic genes (LPL,ACACA,FASN and SCD), especially those of fat supplementation, on ruminant mammary lipogenic gene expression,together with milk fat content and FA composition. In addition, the molecular mechanisms underlying these regulations of SRBP and PPAR was present in detail.