Species independent efficacy of a specific composition of Monoglycerides of short and medium chain fatty acids in preventing EMS and controlling Vibrio parahaemolyticus,  Aeromonas spp., Streptococcus uberis, Flavobacterium spp.,  Yersinia Ruckery, Pseudomonas spp. and Bacillus Cereus affecting shrimps and other aquatic species.  

Manuela Parini (*), Yu Yu, Alessio Paoli, Rahul Gaddipati
 
SILO S.P.A - 20090 FLORENCE - ITALY
manuela.parini@silospa.com

A specific compositions of 1-Monoglycerides of Short and Medium Chain Fatty Acids (from C2 to C12), available on the market under the commercial name SILOhealth 108, proved to exert  a selective antibacterial action against pathogenic bacteria independently from the environmental pH, being antibacterial also at pH 7-8, that is in the conditions of the organs of aquatic species like gut, liver, hepatopancreas and other biological apparatuses. The MIC of the SILOhealth 108 at buffered pH 7 - 8 against Vibrio parahaemoliticus, Vibrio mimicus, Bacillus cereus, Aeromonas hydrophila, Yersinia ruckeri resulted to be 0.1%, against Flavobacteriun and Pseudomonas spp. 0.01% while Lactobacillus was not inhibited by the SILOhealth 108.

Applications in field proved that SILOhealth 108 is able to exert  its actions independently from the specie. Penaeus Vannameis stocked in 3 ponds of 2 mu each (210 shrimps per square meter) in Zanjiang-China showed typical clinical signs of EMS:  hepatopancreas,  gut and faecal matter whitening. Vibrio Parahaemoliticus was isolated. The administration of SILOhealth 108 for 5 days decreased the mortality by 80%  and restored normal growth.

Above effects are repeatable independently from specie, being observable in shellfish, freshwater and marine fish. SILOhealth 108 has been tested in experimental conditions  by the Public Animal Health Institute Bruno Ubertini (Italy) in juvenile sturgeon infected with  11 000 000 CFU of Aeromonas hydrophila: in the group treated with SILOhealth 108 the mortality was reduced by 80% (p < 0.001) and the SGR was increased by 13% (p < 0.01) compared to the control group.