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Type: Journal article
Title: Dietary inclusions of dried macroalgae meal in formulated diets improve the growth of greenlip abalone (Haliotis laevigata)
Author: Bansemer, M.
Qin, J.
Harris, J.
Duong, D.
Currie, K.
Howarth, G.
Stone, D.
Citation: Journal of Applied Phycology, 2016; 28(6):3645-3658
Publisher: Springer Netherlands
Issue Date: 2016
ISSN: 0921-8971
Statement of
Matthew S. Bansemer, Jian G. Qin, James O. Harris, Duong N. Duong, Krishna-Lee Currie, Gordon S. Howarth, David A. J. Stone
Abstract: Wild greenlip abalone predominantly consumes macroalgae, but under culture conditions in Australia, they are fed formulated diets. Dried macroalgae meals are promising ingredients for abalone diets. In this 92-day study, the growth, feed utilisation and digestive enzyme activities of greenlip abalone (Haliotis laevigata; 2.89 g) fed dried macroalgae meals (Ulva sp. meal or Gracilaria cliftonii meal) in formulated diets were investigated. Seven experimental formulated diets, a basal diet (0 % diet) and three inclusion levels of Ulva sp. meal (5, 10 and 20 % inclusions) and Gracilaria sp. meal (5, 10 and 20 % inclusions) were used. Diets were formulated to contain 35 % crude protein, 5 % crude lipid and 17.5 MJ kg−1 gross energy. A commercial diet was also fed to abalone and compared with the 0 % diet. Growth and feed conversion ratio (FCR) of abalone fed the 0 % diet and commercial diet were similar. Abalone fed 5 % Gracilaria sp. meal or Ulva sp. meal exhibited superior growth to abalone fed 0 %. However, increasing dietary Gracilaria sp. meal inclusions (>10 %) led to further growth improvements but impaired protein and energy retentions. In contrast, abalone fed >10 % Ulva sp. meal inclusions exhibited similar growth to those fed 0 and 5 % Ulva sp. Although Ulva sp. and Gracilaria sp. meals are currently not commercially viable, this study clearly demonstrates the potential to develop abalone feeds with inclusions of dried macroalgae meal. We recommend a dietary inclusion of 10 % Gracilaria sp. meal or 5 % Ulva sp. meal to improve abalone growth.
Keywords: Haliotis laevigata; Ulva sp. meal; Gracilaria sp. meal; digestive enzymes; nutrition
Description: Published online: 21 April 2016
Rights: © Springer Science+Business Media Dordrecht 2016
RMID: 0030047492
DOI: 10.1007/s10811-016-0829-0
Appears in Collections:Animal and Veterinary Sciences publications

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