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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.40 [2011] >
IJMS Vol.40(3) [June 2011] >
| Title: | Sunflower oil cake as a replacement for fish meal in feeds of Tiger Shrimp, Penaeus monodon reared in tanks and in net cages |
| Authors: | Dayal, J. Syama
Rajaram, V.
Ambasankar, K.
Ali, S. Ahamad |
| Keywords: | Fish meal replacement
Shrimp feed
Plant protein sources
Sunflower cake
Amino acids
Digestibility
Free amino acid pool |
| Issue Date: | Jun-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Replacement of fish meal in marine shrimp feeds is assuming greater
importance due to increasing economic
and ecological considerations. This study evaluated sunflower cake as a
replacement for fish meal in tiger shrimp
Penaeus monodon juveniles reared both
in tanks and in net cages at 26-33 ppt salinity. Five practical diets were
prepared
by incorporating sunflower cake at 0, 2.5, 5, 7.5 and 10% level by replacing
fish meal. The essential amino acid index (EAAI) of test diets ranged from 0.91
to 0.88. Growth and digestibility study was conducted for 45 d in 500 L
experimental tanks shrimp weighing 0.51±0.02 g with three replications for each
treatment. There were significant (P<0.05) reductions in daily growth
coefficients and protein utilization efficiency in shrimp fed with diets having
above 2.5% sunflower cake in experimental tanks. The lysine and methionine
digestibility (92.4±0.11 and 93.4±0.01%, respectively) was significantly
(P<0.05) higher at 2.5% level inclusion than at 10% level (81.67±0.12 and
83.36±0.17%, respectively). The free amino acid profiles of shrimp muscle at 4
h post feeding indicated significantly
(P<0.05) lower levels for isoleucine, leucine, lysine and valine in shrimp
fed with higher level of sunflower cake. The decreased levels of these
essential amino acids could have hampered protein synthesis and in turn growth.
With three dietary treatments (0, 5 and 10% sunflower cake diets) a 10-week
growth trial was also conducted in net cages with tiger shrimp juveniles
weighing 0.2 g. Significantly (P<0.05) lower daily growth coefficients (%/d)
were observed in shrimp fed with 10% sunflower cake diet (1.642±0.017) compared
to control (1.774±0.024). The results indicate that sunflower cake can be
incorporated up to 5% by replacing 20% of fish meal in marine shrimp P. monodon practical feeds without
compromising growth. |
| Page(s): | 460-470 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.40(3) [June 2011]
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