Journal of the World Aquaculture Society

Mon, 12/28/2020 - 22:08
The present study aimed to evaluate the effects of poly‐β‐hydroxybutyrate (PHB)‐supplemented diets for rainbow trout (Oncorhynchus mykiss) fingerlings. For this purpose, three experimental diets were prepared to contain 0, 2, and 5% PHB; and each diet was tested in a completely randomized design for 60 days in quadruple groups of 22 fish per tank. The results showed that the inclusion of PHB in...
Mon, 11/09/2020 - 22:13
The role of dietary lemon peel (LM) and/or Bacillus licheniformis (BL) on the growth, immunity, and resistance against Aeromonas hydrophila in common carp, Cyprinus carpio was investigated in this study. LM and BL were included in diets at 0% (T0), 108 CFU/g BL (T1), 1.5% LM and 108 CFU/g BL (T2), and 3% LM and 108 CFU/g BL (T3). Fish fed with T1, T2, or T3 had higher weight gain, specific growth...
Sun, 11/08/2020 - 22:13
The purpose of this study was to investigate the dietary effects of using essential oil from sour lemon peel (Citrus limon) on growth performance, carcass composition, blood and serum parameters, and liver enzymes of juvenile rainbow trout (Oncorhynchus mykiss) exposed to deltamethrin (DMN) pesticide. Treatments with no lemon peel essential oil (LPEO) and without DMN (control), as well as four...
Fri, 09/04/2020 - 22:13
Use of plant‐based ingredients in aquafeeds, especially for carnivorous species, is likely to increase in view of concerns regaridng the sustainability, price, and availability of fishmeal. As mycotoxins are a common problem associated with the use of plant ingredients, this study was undertaken to evaluate the effect of two levels of fumonisins (168 μg/kg feed and 333 μg/kg) and compared with...
Mon, 08/24/2020 - 21:29
With the declaration of a national emergency in early March of 2020, the United States formally joined the list of countries around the world implementing nonessential business closures and social distancing policies in response to the coronavirus disease (COVID‐19). As individuals, businesses, and the U.S. government responded to protect public health and combat the spread of the novel...
Wed, 11/13/2019 - 03:18
The Pacific white shrimp Penaeus vannamei is cultivated worldwide and is an important economic resource in Mexico. Despite continuous development of shrimp aquaculture in Mexico, this activity has exhibited variable production rates because of health‐related problems. Most of the health problems have been caused by viruses, such as IHHNV [syn = penstyldensovirus (PstDV1)], TSV, and WSSV, and...
Sun, 09/22/2019 - 03:17
Fish‐eating birds prey and scavenge on catfish ponds with outbreaks of an emergent, atypical Aeromonas hydrophila (AAH) and may play a critical role in the pond‐to‐pond spread of AAH. The objectives of this study were to: (a) determine if great egrets that consumed AAH‐infected fish shed enough AAH in their feces to cause a disease outbreak and (b) determine the environmental factor(s) and animal...
Sun, 09/22/2019 - 03:17
The phenotypic characteristics and growth kinetics at several temperatures, salinities, and pH values of three Vibrio parahaemolyticus (Vp) strains with different virulence and one nonpathogenic strain were evaluated. Independent of the virulence of the strain, a high metabolic diversity was found, which yielded different colored phenotypes on the CHROMagar™ Vibrio. All strains were resistant to...
Sun, 09/22/2019 - 03:17
An 8‐week feeding trial with juvenile hybrid tilapia (Oreochromis niloticus × Oreochromis aureus) was conducted to assess the effects of dietary phenylalanine on growth, body composition, and biochemical parameters in plasma. Six diets were formulated with graded levels of l‐phenylalanine (0.43, 0.74, 1.01, 1.30, 1.60, and 1.91% of the diet). Each diet was randomly assigned to triplicate groups...
Sun, 09/22/2019 - 03:17
A 10‐week feeding trial aimed to investigate the effects of dietary vitamin C (l‐ascorbic acid) on growth, antioxidant activity, and immunity in ricefield eel, Monopterus albus. Six diets were formulated with different levels of vitamin C supplementation (0.1, 17.5, 34.8, 68.6, 139.7, and 278.5 mg/kg). The results indicated that the weight gain (WG) of the M. albus fed the diets with vitamin C...
Sun, 09/22/2019 - 03:17
Acute hepatopancreatic necrosis disease (AHPND) causes massive mortality in shrimp ponds within the first month poststocking. The causative agent is a specific strain of Vibrio parahaemolyticus (VPAHPND) that has acquired the capability to produce virulent binary toxins called ToxA and ToxB. This study aims to test the effect of the addition of an autoinducer‐2‐containing cell‐free supernatant (...