Untitled

Abstract

Whether the inclusion of the various sources of commercially available dietary additives [ginger (GG), cheonggukjang (CJ), blueberry (BB), persimmon (PM), tomato (TT), broccoli (BC) and yacon (YC)] has an effect on growth, body composition, and challenge test survival of juvenile rockfish Sebastes schlegeli was investigated. Twenty-four groups of 70 fish (1680 in total) were each fed one of eight experimental diets: a control diet (Con) without additives, and diets containing GG, CJ, BB, PM, TT, BC or YC. Fish were hand-fed to satiation twice daily for 7 weeks. At the end of this period, 20 fish from each tank were infected with Streptococcus parauberis and monitored for 10 days. Fish fed the YC diet had greater weight gain compared with fish fed the other diets. Feed efficiency and protein efficiency ratio of fish fed the TT and YC diets were higher than of fish fed other diets. Cumulative mortality of fish fed the GG, BB, and YC diets was lower than of fish fed the other diets on day 5 post infection. We conclude that yacon was the best dietary additive for improving rockfish weight gain, while ginger, blueberry, and yacon effectively lowered mortality of rockfish infected with S. parauberis.

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

“…Moreover, ginger powder administration significantly improved O. niloticus resistance against S. agalactiae infection [ 17 ]. Dietary ginger powder also positively impacted the treatment of Gram-positive and/or Gram-negative bacterial infections in S. schlegelii [ 33 , 34 , 57 ]. Lee et al [ 34 ] reported that 1% GRJE-supplemented S. schlegelii groups attained a higher probability of survival against Gram-negative bacteria ( V. harveyi ) compared with groups that did not receive GRJE supplementation.…”

Dietary inclusion effect of various sources of phyto‐additives on growth, feed utilization, body composition, and plasma chemistry of olive flounder (Paralichthys olivaceus), and challenge test against Edwardsiella tarda compared to a commercial probiotic (super lacto®)

“…Several previous studies (Kim et al, 2016;Kim et al, 2018;Lee et al, 2020; revealed that dietary inclusion of YC enhanced the growth performance and improved their antibacterial activities against E. tarda, Streptococcus iniae, S. parauberis, and Vibrio anguillarum in rockfish (Sebastes schlegeli).…”

“…Several studies have demonstrated that GG has antimicrobial, anti-inflammatory, and anti-oxidative properties (Akbarian et al, 2011;Akintobi et al, 2013;Chrubasik et al, 2005;Grzanna et al, 2005;Kim et al, 2007;Masuda et al, 2004;Minghetti et al, 2007) as well as the ability to influence immune function in fish (Ali et al, 2008;Tan & Vanitha, 2004). In rockfish, GG supplemented diets achieved improvement in weight gain, feed utilization, and survival rate in comparison to a diet without any additive against S. parauberis, S. iniae, and E. tarda (Kim et al, 2016;Kim et al, 2018;. In addition, dietary supplementation of GG has been reported to ameliorate the non-specific immune responses and disease resistance to various pathogens in tilapia (Oreochromis mossambicus) and Asian seabass (Lates calcarifer) (Immanuel et al, 2009;.…”

Effect of Dietary Inclusion of Yacon, Ginger and Blueberry on Growth, Feed Utilization, Serum Chemistry and Challenge Test against Streptococcus iniae of Juvenile Rockfish Sebastes schlegeli

“…22.0%) (KOSIS, 2016). (Kim et al, 2001;Cho et al, 2015), (Lee and Kim, 2009), (Lee, 2002), (Lee et al, 2000;Mizanur et al, 2014), (Lee et al, 1996;Jeon et al, 2014) lysozyme (Hwang et al, 2013) Vibrio alginolyticus (Kim et al, 1999) .…”

“…Staphylococcus aureus . Kim et al (2016) YC . [Ginger (GG), Zingiber officinale Roscoe] gingerols shogaol (Sebiomo et al, 2011), (Ekwenye and Elegalam, 2005) (Balestra et al, 2011) .…”