ABSTRACT
High stocking density is a stress factor that potentially affects physiological and immune responses. In this study, the effects of medlar (Mespilus germanica) extract (ME) supplementation on growth performance, antioxidant, immune status, and stress responses in rainbow trout (Oncorhynchus mykiss) were studied. Six hundred fish (40.19 ± 1.09 g; average fish weight ± standard error) were distributed randomly into five experimental groups (assayed in triplicates). The experimental diets were formulated as follows: 0 (T1, control), 0.5% (T2), 1% (T3), 1.5% (T4), and 2% (T4). After 60 days feeding trial, the fish were confined, and the density increased (60 kg/m3) for further 14 days. Results showed significant increases in final weight (FW), weight gain (WG), specific growth rate, and feed intake in the T4 compared to the control (P < 0.05). The feed conversion ratio (FCR) in T4 significantly decreased compared to the control (P < 0.05). Also, the treated groups showed significant improvements in catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), lysozyme (LYZ), total immunoglobulin (total Ig), respiratory burst activity (RBA), total protein, and phagocytosis (PHA) (P < 0.05). Moreover, compared with the control group, supplementation could significantly decrease glucose (GLU) and cortisol (CORT), alanine transaminase (ALT), lactate dehydrogenase (LDH), aspartate transaminase (AST), and alkaline phosphatase (ALP) (P < 0.05). After the challenge, FW and WG in all treated challenge groups were significantly improved compared to the control group (P < 0.05). FCR showed a significant decrease in all treated challenged groups compared to the control group (P < 0.05). However, malondialdehyde, CAT, GPx, SOD, LYZ, complement activity (C3 and C4), total Ig, RBA, peroxidase, and PHA in challenged treated groups were significantly increased compared to the control group (P < 0.05). All treated challenged groups showed lower ALT, LDH, AST, ALP, GLU, and CORT levels than the control group (P < 0.05). The experiment herein successfully demonstrated that dietary ME stimulated fish growth, antioxidant status, and immune responses in crowding conditions and can be recommended as beneficial feed additives for rainbow trout.
ABSTRACT
In medical centers and hospitals one of the most dangers that threaten health care worker and patient are Nosocomial infections (NIs) and Needle stick injuries (NSIs). The aim of this study was to determination the effects of nosocomial infection and needle sticks injuries on patents and health care worker. A review study of literature was conducted to One thousand and fifty manuscripts were retrieved based on various databases: Elsevier, PubMed, Web of Science, Springer, and Google Scholar. Reporting data were used on predetermined consequences nosocomial infection and needle sticks injuries and related to adverse health effects, routes of transmission, control and reduction. The literature signs a notable undesirable affect from potential NIS and NSIs attributed to risk investigated among patents and health care worker. Based on Result this study, the resistance of antibiotics, non-standard personal protective equipment, and Needle recapping can endanger health of human and increase transfer infectious disease risk among exposed patients and health care worker. Useful for health system decision makers and political officials in order to cope with the incidence of nosocomial infections and decrease number of needle stick injuries among patients and health care worker can be the main application the results of this study. Increasing the level of awareness, especially of sensitive groups (patients and HCW), about the ways to prevent nosocomial infections and reduce needle sticks and proper use of personal protective equipment are the main vital managers of the health department actions for decrease the prevalence of NIs. Further research using more sophisticated methodology is warranted. Holding regular and periodic training workshops in connection with standard precautions and prevention of occurrence nosocomial infection and needle sticks injuries can play an important role in increasing the health of patents and health care worker.