Milk production and composition in Danish Holstein, Danish Red, and Danish Jersey cows supplemented with saturated or unsaturated fat

In conclusion, SFA caused a lower protein:fat ratio in milk for all breeds, while UFA only reduced protein:fat ratio for DJ. The minor increased (DH), and the tendency to decreased (DR, DJ) milk yield response to feeding SFA was unexpected, and may be due to a general negative effect of feeding fat in early lactation.