BETH CANNULAS MADE OF SILICONE FOR DIGESTA COLLECTION IN RUMINANTS

Abstract

Silicone 5 mm and 3 mm thick was prepared for making rumen fistula and intestinal T-Shaped cannulas. Silicone was pressed and then shaped into forms using materials such as ceramic, metal and bamboo. The forms coated with silicone were placed in an autoclave at pressure 15 1bs / sq, in. for 2 hrs. After removing from the forms, the cannulas then were transfered to an oven at 200° C for 2 hrs.

The bamboo form was more easily prepared than using metal and ceramic, respectively. Thickness stability, absence of water and air sacs in the silicone played an important role in the durability of the cannulas.

Cannulas made of silicone can be easily made in Thailand. The main advantage of this type of cannula is the minimal adverse effect produced if the animal lays on it or the animal catches the barrel or some object in the pen Futhermore, damaged silicone-made cannulas can be replaced quickly without subjecting the animal to another surgical operation.