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Effects of immunostimulants on ranched southern bluefin tuna Thunnus maccoyii: immune response, health and performance

Citation

Kirchhoff, NT and Antignana, T and Leef, MJ and Hayward, CJ and Wilkinson, Ryan and Nowak, BF, Effects of immunostimulants on ranched southern bluefin tuna Thunnus maccoyii: immune response, health and performance, Journal of Fish Biology, 79, (2) pp. 331-355. ISSN 0022-1112 (2011) [Refereed Article]


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The definitive published version is available online at: http://www3.interscience.wiley.com/

DOI: doi:10.1111/j.1095-8649.2011.03019.x

Abstract

Ranched southern bluefin tuna Thunnus maccoyii were fed baitfishes supplemented with vitamins (predominantly E and C) or vitamins and immunostimulants, nucleotides and β-glucans, over 12 weeks after transfer and monitored for enhancement in immune response, health and performance through their 19 week grow-out period. Fish from two different tows were sampled separately at three different sampling points: at transfer to grow-out pontoons, at 8 weeks post-transfer and at harvest, 19 weeks post-transfer. Lysozyme activity was enhanced during vitamin supplementation compared to control fish. Performance (i.e. survival, condition index and crude fat), health (i.e. blood plasma variables including pH, osmolality, cortisol, lactate and glucose) and alternative complement activity were not commonly improved through diet supplementation. There were some tow-specific improvements in performance through vitamin supplementation including survival, selected parasite prevalence and intensity, and alternative complement activity. Immunostimulant supplementation also showed a tow-specific improvement in plasma cortisol level. Tow-specific responses may suggest that life history, previous health condition and husbandry can affect the success of vitamin and immunostimulant enhancement of immune response, health and performance of ranched T. maccoyii.

Item Details

Item Type:Refereed Article
Keywords: β-glucan; baitfishes; nucleotide; vitamin C; vitamin E
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fish Pests and Diseases
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Wild Caught Tuna
Author:Kirchhoff, NT (Ms Nicole Kirchhoff)
Author:Leef, MJ (Dr Melanie Leef)
Author:Wilkinson, Ryan (Dr Ryan Wilkinson)
Author:Nowak, BF (Professor Barbara Nowak)
ID Code:72004
Year Published:2011
Web of Science® Times Cited:12
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2011-08-18
Last Modified:2017-11-03
Downloads:4 View Download Statistics

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