Uji Tantang Aeromonas hydrophila pada Ikan Nila (Oreochromis niloticus) dengan Beberapa Bakteri Probiotik

Abstract

Probiotics are defined as beneficial microorganisms which, when used in appropriate amounts, have a positive effect on the health of the host. Some of the benefits of probiotics include being able to provide nutrition and enzymatic digestion that can increase metabolism and growth, stimulate beneficial microflora in the gastrointestinal tract, compete with harmful bacteria to inhibit the growth of pathogenic microorganisms and increase fish immunity against pathogenic infections. Oreochromis niloticus or tilapia is the second most common cultured fish in the world because it is easy to cultivate and has high selling power. In tilapia cultivation, there are problems that hinder its development, one of which is a disease that attacks tilapia caused by the pathogenic bacteria Aeromonas hydrophila which results in huge economic losses in the tilapia aquaculture industry. A. hydrophila causes fish to lose their appetite, red discoloration of the anus and base of the fins, bleeding eyes, gills, internal organs, and muscle septicemia, causing death. This review presents information about the results of the challenge of A. hydrophila on tilapia with several probiotic bacteria, including Paenibacillus ehimensis NPUSTI1, Rummeliibacillus stabekisii, Bifidobacterium sp. L-137, Bacillus sp., B. amyloliquefaciens, B. amyloliquefaciens R8, B. methylotrophicus, Enterococcus faecium, Lactobacillus acidophilus, and Staphylococcus sp. seen through parameters of weight gain, survival, and blood (hematocrit, hemoglobin, leukocytes, lymphocytes, and monocytes).