The effect of three carotenoid sources on growth and pigmentation of juvenile freshwater crayfish Cherax quadricarinatus

Sheenan Harpaz, Moshe Rise, Shoshana Arad, Natan Gur

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The effect of adding carotenoids from various sources to feed of juvenile freshwater crayfish Cherax quadricarinatus on pigmentation, growth and survival was examined under laboratory conditions. Juvenile crayfish were fed diets fortified with carotenoids at a level of 100 μg g-1 for a period of either 49 or 55 days. Carotenoid sources were: dried algal cells prepared from Dunaliella salina in which the main carotenoid is β-carotene; a synthetic carotenoid, astaxanthin (Carophyll Pink 8%, manufactured by Hoffman-La Roche) and alfalfa meal. Crayfish receiving feeds fortified with carotenoids exhibited better body colouration than those in the control group, which were fed a diet to which no carotenoids were added. Growth and survival of the crayfish were not affected by the addition of carotenoids to their diet.

Original languageEnglish
Pages (from-to)201-208
Number of pages8
JournalAquaculture Nutrition
Volume4
Issue number3
DOIs
StatePublished - 1 Jan 1998

Keywords

  • Carotenoids
  • Cherax quadricarinatus
  • Crayfish
  • Microalgae
  • Pigmentation

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