A husband and wife who normalised the sexual abuse of their daughter into a regular family "game" for a large part of her childhood have been jailed for a combined 22½ years, for shocking crimes a judge labelled "an egregious breach of trust".

At least once a month for seven years the parents had their daughter lie on their bed as the mother whispered comforting words in her ear while her father sexually abused her, the County Court heard on Friday. The parents also regularly had sex in the girl's presence.

The run of abuse lasted from when the girl was five until she was 12, and also included the father repeatedly sexually abusing her while his wife was out of their Melbourne home.

The father was on Friday jailed for 14½ years after a jury had earlier found him guilty of four counts of incest and four of committing an indecent act. The charges represent a course of conduct rather than specific acts.

The mother was jailed for eight years after being found guilty of incest and two counts of committing an indecent act.