"Control of some infectious diseases affecting cultured Pangasius" Spp. by recent bioproducts application

Abstract

The Pangasianodon hypophthalmus fish is an important new species to be cultured in fish farms. It is native to the Mekong Delta in Southeast Asia. It feeds on fish, crustaceans and plant matter. This type of fish has an attached respiratory organ that enables it to breathe atmospheric air, which makes it tolerate and coexist in poor water quality with low levels of oxygen in high-density culture systems, Also tolerates many diseases and reaches large sizes in a short period of time. It is the most important source for fish fillet production. The present study was carried out to determine the most common bacterial disease affecting pangasius hypophthalmus fish in different ponds (Elref elorobi fish farms and private fish farms in Kafr El Sheikh Governorate).In addition to investigate the role of Nucleotides (Nucleoforce™) as biological feed additives as immunostimulator, bioproductive, antioxidant and antimicrobial effect. Seventy P. hypophthalmus alive and freshly dead with an average body weight (60.5 ±9 g) were collected from different ponds in Egypt for isolation and identification of pseudomonas. And other One hundred and thirty-five (135) apparently healthy striped catfish (Pangasius hypophthalmus) with an average body weight (75 ± 0.9) were obtained from private fish farms in European countryside for applying of the experimental work of dietary nucleotide.