on insufficient pasture at York Stud at Bowenville, about 60 kilometres north-west of Toowoomba.

He was forced to sign an "animal welfare agreement" in which he promised to provide for the nutritional needs of his stock.

But less than two years later, investigators found debilitated horses and cattle left with completely inadequate feed on the same property.

Last month, animal welfare experts were outraged after at least 22 horses, including seven former racehorses starved to death at the property. ( ABC News: Elly Bradfield )

One horse was found lame with a gaping untreated wound and a swollen leg, while another was at risk of dying with no access to quality, digestible food.

On another property, called Kenmore, investigators found stock in such poor health they were seized from Mr Oberle.

One two-year-old heiferthat could not rise, even with help, after being left lying on the ground for two and a half days, had to be put down.

Investigators found other adult cattle were in only slightly better condition.

Mr Oberle told the ABC: "Those cattle were moved from a drought area, brought into there, in an attempt to save them — it didn't work."

But Mr Oberle said he "wasn't satisfied" with the handling of the investigation, which resulted in enforcement action including "animal welfare directions" in June 2004.

He said that "of course I'm unhappy" about the horses' deaths but "it hasn't happened before".

The ABC on Monday found a freshly dug mass grave where dead horses had been left for weeks. ( ABC News: Elly Bradfield )

"There was a period where they slipped