Table 2. Milk Yield and Milk Composition of the Cows^a.

	experimental periodsb
	BSL-free (AP1)	BSL-1	BSL-free (DP1)	BSL-2	BSL-free (DP2)	SEM	p-value period
milk yield (kg)	31.6c	31.4c,d	30.3c,d,e	29.9d,e	29.1e	1.04	0.002
fat (%)	3.85c,d	4.13c	3.91c,d	3.50d	3.77c,d	0.23	0.039
protein (%)	3.01	2.90	2.85	2.86	2.96	0.07	0.144
lactose (%)	4.83	4.84	4.84	4.81	4.66	0.08	0.136
urea (mg/L)	668	626	632	675	520	62.1	0.128

^aSEM, standard error of the mean.

^bBSL-free (AP1), Adaptation period, blue sweet lupin-free feeding; BSL-1, experimental period 1, blue sweet lupin seeds 1 kg; BSL-free (DP1), depuration period 1, blue sweet lupin-free feeding; BSL-2, experimental period 2, blue sweet lupin seeds 2 kg; BSL-free (DP2), depuration period 2, blue sweet lupin-free feeding.

^cMeans in the same row with different letters differ significantly.

^dMeans in the same row with different letters differ significantly.

^eMeans in the same row with different letters differ significantly.