Effect of olive oil in dairy cow diets on the fatty acid profile and sensory characteristics of cheese

Abstract

Effect of olive oil in dairy cow diets on the fatty acid profile and sensory characteristics of cheese

Effects of Dietary Vegetable Oils on Mammary Lipid-Related Genes in Holstein Dairy Cows

“…Similarly, Bernard et al [23] fed dairy goats with soybeans and did not observe changes in abundance of ACACA at both mammary gland and adipose tissue levels. Stable abundance of ACACA in this study, could partly explain, the lack of differences observed in the proportions of C4:0, C6:0, and C16:0 in milk reported in our companion paper [1]. Synthesis of short-chain FA and palmitic acid is mainly regulated by the action of this enzyme, which would be a critical point in the de novo synthesis [24,25].…”

“…C18:1 trans-10 has been reported to affect (anti-lipogenic effect) the abundance of genes involved in lipid metabolism at the mammary gland level [18]. This trans isomer was found in milk from OO, therefore, results in plasma FA partly explain the decrease in milk fat yield observed with OO reported previously [1].…”

“…Milk yield for the 3 groups averaged 33.8 ± 3.5, 32.9 ± 3.5, and 32.5 ± 3.5 kg/d. Details of diets and management are presented in a companion paper [1]. Briefly, during 63 days all cows received a basal diet (65% forage and 35% concentrate) distributed as a total mixed ration ( Table 1).…”

“…Details on production parameters, milk composition and milk FA profile were previously reported [1]. Briefly, compared with control and HVO, OO increased milk yield and decrease milk fat yield.…”

“…Vegetable oils have been used in dairy diets to increase energy density of rations or to alter milk fatty acid (FA) profiles [1]. Dietary oil supplements affect mammary lipid metabolism partly through changes in lipogenic gene abundance.…”