The Effect of Coconut Shell Liquid Smoke in Commercial Feed Towards Total Pseudomonasaeruginosa Bacteria on Gastrointestinal Tract Tilapia (Oreochromis Niloticus)

Bacteria Pseudomonas aeruginosa is one of the pathogenic bacteria that can be found in the gastrointestinal tract of fish and can affect cultivation. Bacterial disease in fish can be overcome by antibiotics, but antibiotics cause negative effects. The use of coconut shell liquid smoke in the feed is needed to decrease the growth of harmful bacteria, the liquid coconut shell contains compounds such as phenols and acids that can be used as antibacterials. Result of research of total bacterium of Pseudomonas aeruginosa on gastrointestinal tract of tilapia fish have an effect significantly different (P <0,05) to decrease of total bacteria Pseudomonas aeruginosa on gastrointestinal tract tilapia (Oreochromis niloticus). The use of coconut shell liquid smoke in the feed is most effective for decrease Pseudomonas aeruginosa bacteria in the gastrointestinal tract of tilapia (Oreochromis niloticus) in treatment with a concentration of 1.5% ie 2,11 x 10⁵ CFU/g.