Abstract:
Artemia is an important biological feed for aquatic animals.In this study,
Saccharomyces cerevisiae,powder of
Chlorella pyenoidosa,and fermented shrimp flake were fed to new hatched
Artemia nauplii to evaluate the effects of different diets on the growth,survival,and nutritional composition of
Artemia nauplii.Results showed that after 6 days feeding,the fermented shrimp flake feed group had the largest average body length,which were significantly larger than that of the
S.cerevisiae group and the powder of
C.pyenoidosa group (
P<0.05).The survival rate of
Artemia nauplii fed with
S.cerevisiae was the lowest,but there were no significant differences between the powder of
C.pyenoidosa group and the fermented shrimp flake group (
P>0.05).After 6 days feeding,the crude protein content of
Artemia nauplii significantly increased,but the crude fat content significantly decreased compared to
Artemia nauplii (
P<0.05).The protein content of
Artemia nauplii in the powder of
C.pyenoidosa group and the fermented shrimp flakes group was significantly higher than that in the
S.cerevisiae group (
P<0.05).Furthermore,the highest crude fat content was obtained in
Artemia nauplii that were fed with the fermented shrimp flakes.The fermented shrimp flakes group had the highest total amino acid (TAA) content and essential amino acid (EAA) content.All experimental groups contained high levels of eicosapentaenoic acid (EPA),but the docosahexaenoic acid (DHA) was undetectable.The total fatty acid content and polyunsaturated fatty acid content in the fermented shrimp flakes group were significantly higher than those in the powder of
C.pyenoidosa group and the
S.cerevisiae group (
P<0.05).However,the
Artemia nauplii fed with powder of
C.pyenoidosa had significantly higher high unsaturated fatty acid (HUFA) content and EPA content than the fermented shrimp flakes group as well as the
S.cerevisiae group (
P<0.05).The outcome of this study provided that fermented shrimp flakes and powder of
C.pyenoidosa had advantages in enhancing the nutrition of
Artemia,and could be used for
Artemia production and nutrient enhancement.
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