The details of three more charges faced by Ewen Macdonald can now be revealed, including the violent killing of a herd of calves.

The charges relate to the killing of 19 calves belonging to a Feilding farmer, the destruction of 16,000 litres of milk and damage to a building.

The jury in Macdonald's month-long trial on the charge of murdering his brother-in-law Scott Guy did not hear about the three charges that Macdonald faced jointly with Callum Boe, who had worked at the Guy family farm. Suppression has lapsed.

Macdonald was found not guilty of the murder of Scott Guy by shooting him early on the morning of July 8, 2010.

The charges the jury did not know about were that Macdonald destroyed 16,000 litres of milk in August 2007, intentionally destroyed calves to cause loss to Paul Barber between August 9, 2007 and August 10, 2007 and damaged a building known as the whare between March 21, 2008 and March 22, 2008 at Foxton.

Boe, who had an alibi for the time Scott Guy was killed and did not give evidence at Macdonald's trial, was jailed for two years on September 5 last year.

Macdonald is still in custody and any jail sentence he received would take into account the 15 months he had been in prison on remand.

Many details of the charges were suppressed to ensure Macdonald received a fair trial.

Boe had worked at the Feilding farm only later leaving to live in Queenstown with his brother in April 2010.

It was when he was spoken to by police about the offending with Macdonald that the investigation into Scott Guy's murder turned to focus on Macdonald.

During Boe's sentencing it was revealed that the calves were killed by blows to the head.

The overall loss of the calves, milk and property was valued at between $500,000 and $600,000.

Judge Kevin Phillips said the victim impact statements were alarming, children were upset and farms and businesses lost income.

Victims had been horrified by the killing of the calves.

He said aggravating factors were the extent of the damage, the number of charges over time, the premeditation, the carrying of firearms and taking fuel to the whare.

Judge Phillips called Boe immature and vulnerable to intimidation.

''It's difficult to assess the degree of influence Ewen Macdonald may have had over you.''

The murder trial jury did hear Macdonald had pleaded guilty to three other charges of vandalising Scott and Kylie Guy's new home, arson of an old house on their property and killing of two deer on neighbour Craig Hocken's property.

Part of the trial evidence was how Macdonald and Boe called their trips ''missions'' and would talk about going to do a ''mission.''

Macdonald's wife Anna told the jury about the two men going on their ''missions.''

Macdonald is due to be sentenced on all six charges in the High Court at Wellington on September 14.

- © Fairfax NZ News