Animal carcasses found on the property of Robert William Pickton were not butchered in the same way human remains were dismembered on the farm, an expert witness testified Wednesday.

Toolmark and firearms examiner Brian McConaghy told the court he was asked to examine 35 carcasses seized by police and to look for any tool marks or cuts similar to those found on human remains he had already examined. 

"You came up short in comparing the pig carcasses to the human remains?" defence lawyer Marilyn Sandford asked. 

"Yes, there was no particular pattern of agreement at all with pigs and the human body parts found," McConaghy said.

The trial, in B.C. Supreme Court in New Westminster, began in late January. Pickton has been charged in the deaths of Sereena Abotsway, Mona Wilson, Andrea Joesbury, Brenda Wolfe, Marnie Frey and Georgina Papin, all women who went missing from Vancouver's Downtown Eastside.

In all, Pickton is accused in the deaths of 26 women. He has pleaded not guilty to all the charges. Another trial on 20 other counts will be held later.

In its opening, the Crown alleged Pickton murdered and butchered the women and that he had the "expertise and equipment for the task, he had the means of transportation available and the means for the disposal of the remains."  

McConaghy also testified that saw marks found on the skulls of Abotsway, Wilson and Joesbury were consistent with those found on a skull found in Mission, B.C., in 1995. The identity of the skull has never been identified.