Claims
- 1. A method of increasing the survival rate of larval and juvenile fish or juvenile crustaceans in aquaculture breeding comprising:
- feeding to said larval and juvenile fish or juvenile crustaceans a composition comprising astaxanthin-containing zooplankton selected from the group consisting of rotifers belong the genus Brachionus and crustaceans belonging to the genus Artemia,
- in an amount of 7.times.10.sup.4 to 3.times.10.sup.6 astaxanthin-containing zooplankton/1000 larval and juvenile fish/day to increase the survival rate of said larval and juvenile fish or juvenile crustaceans, wherein
- said astaxanthin-containing zooplankton has an intracellular accumulation of astaxanthin at a concentration of 50-5000 ppm on a dry weight basis, and wherein
- said astaxanthin-containing zooplankton is produced by culturing said rotifers belonging to the genus Brachionus and said crustaceans belonging to the genus Artemia on nutrient culture media comprising astaxanthin-containing yeasts belonging to Pfaffia or astaxanthin-containing algae belonging to Haematococcus for a time and at conditions sufficient to obtain said astaxanthin-containing zooplankton.
- 2. A method according to claim 1, wherein the zooplankton is a rotifer belonging to Brachionus plicatilis.
- 3. A method according to claim 1, wherein said fish is selected from the group consisting of flounder, sea bream, lake white fish, milk fish, sea bass and malabar.
- 4. A method according to claim 3, wherein said fish is selected from the group consisting of flounder and sea bream.
- 5. A method according to claim 4, wherein the zooplankton is a rotifer belonging to Brachionus plicatilis.
- 6. A method according to claim 1, wherein said juvenile crustaceans are selected from the group consisting of swimming crab and shrimp.
- 7. A method according to claim 6, wherein said juvenile crustaceans are swimming crab.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4-136751 |
May 1992 |
JPX |
|
4-263400 |
Oct 1992 |
JPX |
|
Parent Case Info
This application is a continuation application of application Ser. No. 185,884, filed Jan. 26, 1994, now abandoned, which application is a 371 of PCT/JP93/00709, filed May 27, 1993.
Foreign Referenced Citations (2)
Number |
Date |
Country |
2238855 |
Sep 1990 |
JPX |
3227241 |
Dec 1991 |
JPX |
Non-Patent Literature Citations (4)
Entry |
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Beneman, J.R., J of Appl. Phy col. vol. 4, pp. 233-245, 1992. |
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Continuations (1)
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Number |
Date |
Country |
Parent |
185884 |
Jan 1994 |
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