Table 2.

Heritability¹, genetic², and phenotypic³ correlations of production, productive life and type traits at first three lactations

Parity	Traits	PL	Milk4	Prot5	Fat6	SCS
1	PL	0.06±0.01	0.11	0.05	0.02	−0.17
	Milk	0.08	0.2±0.01	0.80	0.39	0.31
	Prot	0.07	0.91	0.15±0.01	0.56	0.28
	Fat	0.06	0.66	0.73	0.14±0.01	0.14
	SCS	−0.04	−0.04	−0.02	−0.02	0.22±0.02
2	PL	0.13±0.02	0.35	0.06	0.03	−0.22
	Milk	0.16	0.12±0.01	0.51	0.81	−0.12
	Prot	0.14	0.66	0.13±0.01	0.68	−0.22
	Fat	0.16	0.91	0.73	0.14±0.02	−0.12
	SCS	−0.03	−0.07	−0.06	−0.0635	0.19±0.03
3	PL	0.11±0.03	0.04	0.15	0.18	−0.26
	Milk	0.16	0.08±0.01	0.74	0.78	0.37
	Prot	0.16	0.91	0.08±0.02	0.52	0.34
	Fat	0.15	0.65	0.73	0.09±0.01	0.46
	SCS	−0.03	−0.10	−0.09	−0.08	0.11±0.02

PL, productive life; SCS, somatic cell score.

¹Diagonal (heritability and standard error).

²Above diagonal.

³Below diagonal.

⁴Milk = 305 d milk yield.

⁵Prot = 305 d protein yield.

⁶Fat = 305 d fat yield.