The Effect of Production Level on Feed Intake, Milk Yield, and Endocrine Responses to Two Fatty Acid Supplements in Lactating Cows^*

Relationship between milk yield over the 4 d before the beginning of the trial (pretrial FCM) and the response (saturated −unsaturated) in milk protein concentration to the unsaturated fatty acid treatment (y = −0.38 + 0.0092x; P = 0.02, R² = 0.18).

Relationship between milk yield over the 4 d before the beginning of the trial (pretrial FCM) and the response (saturated−unsaturated) in milk protein yield to the unsaturated fatty acid treatment (y = −0.204 + 0.006x; P = 0.048, R² = 0.46).