APHRODITE and Tiffany were left to starve after their owner only provided them with one or two biscuits of hay each day for almost a year.
The severe underfeeding was despite RSPCA efforts to ensure the horses' owner, Bianca Jayne Wogandt, knew the correct care and amount of feed to give the mares.
Wogandt was found guilty in Maryborough Magistrates Court on Tuesday of breaching her duty of care to an animal.
The court was told Wogandt was warned a number of times by the RSPCA that the horses needed to be fed more and given expert advice about correct feeding after the horses were inspected in March, 2013.
Sixteen complaints were received from members of the general public about the neglect of the horses, which were stabled at Wogandt's mother's place at Dundathu.
The horses were still underfed when the RSPCA seized the mares in December, 2014.
It took three months for the RSPCA to return the horses to a healthy weight.
Magistrate Graeme Tatnell said he was satisfied Wogandt did not provide enough food for the horses.
"I also take into account that you certainly did have the horses' welfare at heart but for financial reasons you could not provide them with enough feed,'' he said.
Mr Tatnell fined Wogandt $3000 and ordered she not own a horse for three years.
Wogandt intends to fight the almost $12,000 in costs of caring for the horses claimed by the RSPCA.