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- Title
Effects of diets on the growth performance and shell pigmentation of Pacific abalone.
- Authors
Ju, Zhi Yong; Viljoen, Cecilia; Hutchinson, Peter; Reinicke, Justin; Horgen, F David; Howard, Luke; Lee, Cheng‐Sheng
- Abstract
This study investigated the effects of natural and artificial diets on growth performance and shell pigmentation of cultured abalone. A 7-month feeding trial was conducted on 12 000 Pacific abalones ( Haliotis discus hannai) with four diets including two extruder-processed test diets (with & without addition of oleopaprika carotenoids), Pacific dulse ( Palmaria mollis) and a combination of Pacific dulse and a test diet. The results showed that the two test diets resulted in higher survival of abalone, but with a lower growth rates when compared with Pacific dulse alone ( P < 0.05). The combination diet achieved the highest survival and growth rates. The Pacific dulse resulted in abalone with dark-brown shells, which are preferred by Asian markets. The test diets led to 52% and 55% of the animals with pink coloured shells and the supplementation of oleopaprika did not affect shell pigmentation. The aqueous acidic extracts from both dark-brown and pink shells showed blue colour; HPLC- MS chromatography revealed that the pigments in the extracts were consistent with a biliverdin and a cysteine-biliverdin. These results are valuable for the development of abalone feed and the control of abalone shell colouration.
- Subjects
ABALONES; MOLLUSK growth; MOLLUSK culture; MOLLUSKS; SEASHELLS; ANIMAL coloration; PHYSIOLOGY; FOOD
- Publication
Aquaculture Research, 2016, Vol 47, Issue 12, p4004
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.12851