Where is super sized dung in monster hunter 3 tri

When the Moga Forecast states that Herbivore breeding the super-sized Aptonoth will appear, when this happens you need to kill them to get a chance of receiving the super-sized dung.

This is also the time you can get Blue Kelbi horns by K'Oing the Kelbi with large horns, the best way to do it is with a Sword and shield and use the shield bash.