Table 3.

Significance level (p-value) for the farm, parity year and season and number of kid factors, determination coefficient (R²) and residual standard deviation (RSD) for the variables considered in the study.

	Farm	Parity Year	Number of Kids	Parity Season	R2	RSD
Total Milk Production, kg	<0.0001	<0.0001	<0.0001	<0.0001	31.40	125.740
Mean daily milk production, kg/day	<0.0001	<0.0001	<0.0001	<0.0001	33.10	0.456
Mean lactation length, days	<0.0001	<0.0001	<0.0001	<0.0001	27.00	24.650
Total Protein Production, kg	<0.0001	<0.0001	<0.0001	<0.0001	33.91	4.454
Total Fat Production, kg	<0.0001	<0.0001	<0.0001	<0.0001	33.56	6.400
Protein, %	<0.0001	<0.0001	0.2912	<0.0001	27.75	0.300
Fat, %	<0.0001	<0.0001	0.8533	<0.0001	23.31	0.700