Dietary onion and ginger enhance growth,hemato-immunological responses, and disease resistance in brown-marbled grouper, Epinephelus fuscoguttatus
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2012, Vol 5, Issue 4
Abstract
A 12-week (September to December 2009) feeding trial was conducted to evaluate the immunostimulatory effects of different substances administered orally through the diet in the brownmarbled grouper, Epinephelus fuscoguttatus. Five experimental diets containing either onion, ginger, b-glucan, or vitamin C and a control diet (without immunostimulants) were fed to the fish weighing about 44 g for 12 weeks. Onion-fed fish showed significantly increased weight gain, hematocrit, and total Ig compared to the control group; however, leukocyte differential count and ROS production were unaffected. Ginger-fed fish likewise significantly increased total Ig, ROS production and lysozyme activity. However, it did not affect growth and hematocrit value. β-glucan significantly increased growth and total Ig but had no effect on the other parameters. Vitamin C significantly increased hematocrit, total Ig and ROS production but did not increase growth. Upon challenge with a bacterial pathogen Vibrio harveyi, mortality was significantly reduced in the onion, ginger and vitamin C-fed fish but not in the β–glucan-fed fish. This study demonstrated that onion and ginger could positively affect the innate immune responses and protect grouper against Vibrio harveyi infection.
Authors and Affiliations
Mary Apines-Amar, Edgar Amar, Joseph Faisan Jr, Shuichi Satoh
Keywords
Related Articles
- EP ID EP146153
- DOI -
- Views 69
- Downloads 0
Omega-3 polyunsaturated fatty acids and cardiovascular diseases
The article presents some general facts about omega-3 fatty acids and their role in the treatment and prevention of cardiovascular diseases. Omega-3 fatty acids are essential for the human body. Their beneficial effects...
Nutritional properties of the invasive lionfish: A delicious and nutritious approach for controlling the invasion.
Lionfish, Pterois volitans and P. miles, are native to the Indo-Pacific and have recently invaded the Western Atlantic Ocean. Strategies for control of this invasion have included limited removal programs and promotion o...
In situ and ex situ preservation of Prussian carp oocyte
The decline of ova viability after ovulation is one of the limiting factors in controlled reproduction of several fish especially in warm water fish. The purpose of this study was evaluating the viability of Prussian ca...
Contribution to the biology of the endangered Mexican fish, Zoogoneticus tequila, and suggestions for its indoor management
The endangered Mexican fish, Zoogoneticus tequila Webb & Miller, 1998, represents a new challenge for scientists: its biology, quite unknown, could perhaps explain the reason for its extremely low consistency in natu...
Rotifer (Brachionus plicatilis) culture in batch system with suspension of algae (Nannochloropsis oculata) and bakery yeast (Saccharomyces cerevisiae
The rotifer Brachionus plicatilis is commonly cultured and used in hatcheries as the first feed of marine and fresh water fish larvae. Several cultivation techniques have been developed and applied in hatcheries by aqua...