A feeding trial was conducted to evaluate the effect of eplacement of soybean meal by linseed meal and adding Yucca schidigera powder extract ,methionine and lysine on growth performance and body composition of Nile tilapia, Oreochromis niloticus (L) with an average initial weight of 30.8± 13 g/fish. The experimental* fish were divided into 18 groups and fed on pelleted feed containing each of ...

Tilapia is the second most farmed fish in tropical and sub-tropical countries worldwide. This study investigated effect of replacing meal by Spirulina platensis (groups fed with 5%, 10% 15% Spirulina) on growth Nile tilapia O. niloticus juveniles. Intestinal microbiota has been studied MiSeq Illumina sequencing. No significant differences (P > 0.05) were observed for protein, carbohydrate li...

Estrogenic pollution and its control in aquatic systems have drawn substantial attention around the world. The chemical and biological assessment approaches currently utilized in the laboratory or field cannot give an integrated assessment of the pollution when used separately. In this study, in situ chemical and biological methods were combined to detect pollution in a water recycling system. ...

Triple-negative breast cancer (TNBC) currently lacks a suitable therapeutic candidate and is thus difficult to treat. Here, we report that a cationic antimicrobial peptide (CAP), tilapia piscidin 4 (TP4), which was derived from Nile tilapia (Oreochromis niloticus), is selectively toxic to TNBC. TP4 acts by inducing an AP-1 protein called FOSB, the expression of which is negatively associated wi...

Recent studies have highlighted both the positive and negative impacts of species invasions. Most of these studies have been conducted on either immobile invasive plants or sessile fauna found at the base of food webs. Fewer studies have examined the impacts of vagile invasive consumers on native competitors. This is an issue of some importance given the controlling influence that consumers hav...

In order to evaluate the phenotypic variation between natural population and cultured stocks of Nile tilapia (Oreochromis niloticus Linnaeus, 1758), the intraand inter-population differentiations were analyzed using biometric approach. Thus, eight morphological measurements were taken from 300 specimens collected from Ismailia Canal (AB) as natural population and two cultured stocks from Kafr E...

Eukaryotic elongation factor 1 alpha (eEF1A) is an essential component of the translational apparatus. In the present study, eEF1A1b was isolated from the Nile tilapia. Real-time PCR and Western blot revealed that eEF1A1b was expressed highly in the testis from 90 dah (days after hatching) onwards. In situ hybridization and immunohistochemistry analyses showed that eEF1A1b was highly expressed ...

A study was conducted to determine the role of specific antibodies in immunity to Streptococcus agalactiae. Adult Nile tilapia (Oreochromis niloticus) were injected i.p. with tryptic soy broth as control or with S. agalactiae vaccine. Ninety days later, fish were challenged with 1.5x10(4)CFUS. agalactiae fish(-1). Blood was drawn from all fish 90d after vaccination and 25d after challenge, and ...