Dietary onion and ginger enhance growth, hemato-immunological responses, and disease resistance in brown-marbled grouper, Epinephelus fuscoguttatus.
Share
Abstract
A 12-week (September to December 2009) feeding trial was conducted to evaluate theimmunostimulatory effects of different substances administered orally through the diet in the brown-marbled grouper, Epinephelus fuscoguttatus. Five experimental diets containing either onion, ginger, β–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.
Suggested Citation
Apines-Amar, M. J. S., Amar, E. C., Faisan, J. Jos, Pakingking , R. Jr., & Satoh, S. (2012). Dietary onion and ginger enhance growth, hemato-immunological responses, and disease resistance in brown-marbled grouper, Epinephelus fuscoguttatus.Subject
Collections
- AQD Journal Articles [1179]
Related items
Showing items related by title, author, creator and subject.
-
Evaluation of dietary freeze-dried Chaetoceros calcitrans supplementation to control Vibrio harveyi infection on Penaeus monodon juvenile
Seraspe, Ebonia B.; Gabotero, Shirleny; de la Peña, Milagros R.; Pahila, Ida G.; Amar, Edgar (Elsevier, 2014)Effects of supplementation of diets with freeze-dried Chaetoceros calcitrans to control Vibrio harveyi infection are evaluated through immune responses, and disease resistance of juvenile Penaeus monodon. Total lipid and ... -
Induction of immunity and resistance to white spot syndrome virus (WSSV) in shrimp Penaeus monodon (Fabricius) by synthetic oligodeoxynucleotide and bacterial DNA
Amar, Edgar C.; Faisan, Jr., Joseph (University of the Philippines Los Baños, 2012)Shrimps like all invertebrates are believed to lack true adaptive immunity but recent evidence indicate that they can be protected against pathogenic organisms by priming their immune system with immunostimulatory substances. ... -
Prevention and control measures against viral nervous necrosis (VNN) in marine fish hatcheries
de la Peña, Leobert D. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2010)An extension manual that describes the clinical signs, behavioral changes, geographical distribution, and species affected by the virus; detection, prevention and control methods especially in the hatchery phase are also included.