>A farmer who is accused of raping his wife and underage stepdaughter over two decades has also been charged with committing sexual acts with cows and calves.

The dairy farmer allegedly told his wife about having sex with his cows and made her watch as he made the calves perform sexual acts on him.

>The man, whose name cannot be reported to protect the identity of his accusers, is on trial in New Zealand where he faces 38 charges of sexual assault, including 15 of rape, one of bestiality involving cows and one of performing indecent acts on calves.

His stepdaughter said the offending began when she was under 10 years old and escalated to near-nightly rapes for the next decade, Whangārei District Court heard.

>She claims she was raped nearly 300 times, Crown Prosecutor Geraldine Kelly told the jury.

The victim said she felt relief when her stepfather got a vasectomy, The New Zealand Herald reported.

>Kelly said: 'Getting pregnant had been a concern for her before she was 12.'