Table 4.

Results of the milk yield and quality traits from ANOVA (F-value and significance) for fixed effects (diet, period and their interaction) and RMS for random effects (animal and residuals).

Traits	F-Value of Fixed Effects			Random Effects (RMS)
	Diet #	Period †	D × P ‡	Animal	Residuals
Yield (kg/day)	35.6 *	28.1 *	1.85	4.9	3.6
Fat (%)	0.8	8.5 *	1.55	0.6	0.4
Lactose (%)	0.9	0.9	1.80	1.1	0.9
Protein (%)	1.1	0.6	1.61	0.6	0.5
Casein (%)	0.9	0.7	0.98	0.4	0.2
Urea (mg/dL)	1.8	10.1 **	1.34	3.5	2.8
SCC § log10/mL	2.1	0.9	1.15	0.5	0.3

^# Diet: CTR group: milk produced by dairy cows fed concentrate without olive cake supplements; OC group: milk produced by dairy cows fed concentrate with olive cake supplements. ^† period: From May to September. ^‡ D × P: interaction diet × period ^§ Somatic Cell Count. * p < 0.05; ** p < 0.01.