Ginger (Zingiber officinale) powder improves growth performance and immune response but shows limited antioxidant capacity for Nile tilapia infected withAeromonas hydrophila

Abstract

Fish were fed diets containing dehydrated ginger powder (GgP) to determine its effects on growth, immune response, antioxidant capacity and resistance to Aeromonas hydrophila infection. 540 Nile tilapia were distributed in 36 250 L aquaria and fed six isonitrogenous and isoenergic diets supplemented with six graded levels of GpP: 0, 2.5, 5, 7.5, 10 and 15 g/kg, during 30 days. After that, growth, hemato‐immunological parameters and antioxidant enzymes activities were determined. All parameters, but growth, were re‐evaluated after the bacterial infection challenge. Fish fed diets up to 5 GgP showed higher body weight and specific growth rate compared with 0 GgP. Fish fed 10 GgP showed the highest H2O2 and NO compared with 0 GgP (p < .05). Fish fed 2.5 GgP and 10 GgP maintained catalase and superoxide dismutase activities after infection. The highest survival was observed for fish fed 10 GgP. The best results for specific growth rate and feed conversion ratio were determined at 4.1 and 5.8 g/kg of GgP and for survival rate and immunological response at 10 g/kg of GgP. In sum, 10 g/kg GgP is indicated to improve Nile tilapia growth performance and resistance against Aeromonas hydrophila infection.

Dietary Supplementation with Ginger (Zingiber officinale) Residue from Juice Extraction Improves Juvenile Black Rockfish (Sebastes schlegelii) Growth Performance, Antioxidant Enzyme Activity and Resistance to Streptococcus iniae Infection

“…Numerous studies have shown that dietary supplementation with various types and concentrations of ginger significantly affects growth and feed utilization in fish [ 1 , 20 , 21 , 34 , 35 , 36 ]. Similar to our study, Naliato et al [ 19 ] showed that growth performance parameters of Oreochromis niloticus including final body weight, WG, SGR, feed intake and feed conversion ratio, and PER were responsive to the increase on dietary ginger powder supplementation, showing a dose-dependent response and a linear correlation. These authors also described that zingiberene is the most concentrated compound in the dehydrated ginger powder, terepene is known for its smell and flavor [ 37 ], and this substance improved the feed intake and feed conversion ratio, resulting in enhanced growth and PER.…”

“…Among medicinal plants, ginger ( Zingiber officinale Roscoe) has been widely studied due to its antioxidant [ 9 ], antibacterial [ 10 , 11 , 12 , 13 ], antiparasitic [ 14 ], anti-inflammatory [ 1 ], immunostimulatory [ 15 , 16 , 17 ], and growth-promoting [ 1 , 17 , 18 ] properties. The benefits of ginger powder, ginger essential oil, and ginger extracts as a diet supplement for fish have been reported [ 6 , 19 , 20 , 21 ]. However, the efficacy of using a ginger by-product from juice extraction as a feed supplement for black rockfish ( Sebastes schlegelii ) has not been investigated.…”

Characterization and protective effects of lytic bacteriophage pAh6.2TG against a pathogenic multidrug‐resistant Aeromonas hydrophila in Nile tilapia ( Oreochromis niloticus )

“…The findings in this study suggest a potential approach using phage to reduce bacterial load that was effective in protecting Nile tilapia from a MDR A. hydrophila. This approach provided comparable RPS to other promising alternatives to antibiotics, such as probiotic-based or plant-based products (Dawood et al, 2020;Kuebutornye et al, 2020;Naliato et al, 2021;Neamat-Allah et al, 2021). Apart from tilapia, F I G U R E 7 Indirect ELISA analysis of A. hydrophila specific IgM antibody.…”

Characterization and protective effects of lytic bacteriophage pAh6.2TG against a pathogenic multidrug-resistant Aeromonas hydrophila in Nile tilapia ( Oreochromis niloticus )

“…The findings in this study suggest a potential approach using phage as prophylactic agent that was effective in protecting Nile tilapia from a MDR A. hydrophila . This approach provided comparable RPS to other promising alternatives to antibiotics, such as probiotic-based or plant-based products (Dawood et al, 2020;Kuebutornye et al, 2020;Naliato et al, 2021;Neamat-Allah et al, 2021). Apart from tilapia, pAh6.2TG has great potential to be applied in catfish aquaculture industry due to the lytic activity of pAh6.2TG against multiple MDRA.…”