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چکیده
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The effects of dietary nucleotide on the growth
performance, fatty acid composition and intestinal morphology of the
Pacific white shrimp (Litopenaeus vannamei) were investigated. This
study was conducted with 2 treatments in triplicate random groups of
25 shrimp (average weight of 3.21±0.04 g) per each 300-litre tank.
The shrimps were fed their respective diets on a saturation basis with
the feed divided into three parts to be fed at 08:00, 14:00 and 20:00
hrs. daily. In test diet, highly purified nucleotides were included rate
of 0.2% into the mash with minimal water. Control diets were
reconstituted in an identical manner, omitting the nucleotides.
Growth, fatty acid composition and intestine epitelum cell height
were analyzed per replicate treatment 5 weeks after commencing
trials. Some parameters such as final weight, FCR, SGR, PER, and
Lipids, 14:1n5, 20:3n3 and 22:6n3 fatty acid significantly (P < 0.05)
were better in shrimps fed by dietary nucleotide than of control
treatment, whilst there were no significant differences in survival,
carapace length gain, dry feed consumption and crude protein,
saturate fatty acid (SFA), Monounsaturated fatty acid (MUFA), Poly
unsaturated fatty acid (PUFA) content as well as (n-3) PUFA and (n-
6) PUFA between the treatments (P>0.05). The mean intestine
epitelum cellc height in shrimp after 5 weeks feeding with the
nucleotide diet was greater than those of shrimp fed the control diet.
This study showed that dietary nucleotide could be effectiveness on
growth, intestine absorbance and fatty acid profile of Pacific white
shrimp.
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