Dietary Wood and Activated Charcoal Improved Ammonium Removal, Heavy Metals Detoxification, Growth Performance, Blood Biochemistry, Carcass Traits, and Histopathology of European Seabass
Ashraf I. G. Elhetawy, Mohamed M. Abdel-Rahim, Ahmed E. Sallam, Shimaa A. Shahin, Ayman M. A. Lotfy, Mohammed F. El Basuini
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引用次数: 0
Abstract
A 120-day growth trial was completed to assess rearing water quality and fish performance in terms of growth, feed efficacy, digestive enzymes, immunity, and antioxidant activity of seabass fed an experimental diet (ED) supplemented with commercial wood charcoal (WC) and activated wood charcoal (AC). Three levels (0, 10, and 20 g) of WC and AC were administered, representing five treatments: control (CD) fish-fed ED without additives, (WC-1) fish-fed ED containing 10 g kg−1 WC, (WC-2) fish-fed ED containing 20 g kg−1 WC, (AC-1) fish-fed ED containing 10 g kg−1 AC, and (AC-2) fish-fed ED containing 20 g kg−1 AC. Three hundred fish (60.12 ± 0.20 g/fish) were stocked in 15 cement tanks (4.0 m × 2.0 m × 1.2 m, water volume 5 m3 each) at 20 fish/tank and a daily feed ration of 3% of body weight. Results revealed significant improvements with increased growth variables (final weight, weight gain, and specific growth rate), decreased FCR, and decreased ammonia levels and heavy metals (Cu, Cd, Fe, Mn, and Zn) content in rearing water, muscle, and liver with fish fed WC and AC supplemented diets. Furthermore, considerable improvements in digestive enzymes, immunity, and antioxidant activity, with enhanced kidneys, liver, intestines, gills, and spleen. Fish fed the WC-1 diet had a higher final weight (171.90 g), better FCR (1.25), and improved internal organs than the other groups.
期刊介绍:
Aquaculture Nutrition is published on a bimonthly basis, providing a global perspective on the nutrition of all cultivated aquatic animals. Topics range from extensive aquaculture to laboratory studies of nutritional biochemistry and physiology. The Journal specifically seeks to improve our understanding of the nutrition of aquacultured species through the provision of an international forum for the presentation of reviews and original research papers.
Aquaculture Nutrition publishes papers which strive to:
increase basic knowledge of the nutrition of aquacultured species and elevate the standards of published aquaculture nutrition research.
improve understanding of the relationships between nutrition and the environmental impact of aquaculture.
increase understanding of the relationships between nutrition and processing, product quality, and the consumer.
help aquaculturalists improve their management and understanding of the complex discipline of nutrition.
help the aquaculture feed industry by providing a focus for relevant information, techniques, tools and concepts.