The Northern Victorian Livestock Exchange at Barnawartha has turned to mud under pressure.

Charolais were the star of AgGrow today at the annual bull sale, with both the top and second top priced bulls.

Buyers local to the Colac, Geelong and Camperdown districts stuck strongly by sellers at Colac's monthly store cattle sale when volume feed buyers failed to attend.

A select group of Wagyu vendors from Queensland and New South Wales presented 69 lots for auction at the sale including 40 bulls, 17 females, 5 semen and 7 embryo packages during Beef Australia 2018.