POTENTIAL USE OF ORGANIC MINERAL AS MINERAL SOURCE FOR DIET OF JUVENILE VANNAMEI SHRIMP, Penaeus vannamei
Abstract: The use of organic
mineral (OM) has been recently introduced in aquaculture both as feed
supplement and water quality improvement. A feeding experiment was conducted to
evaluate a response dose of OM on growth, survival, and mineral content in whole
the body and carapace of vannamei shrimp (Penaeus vannamei). Three diets were
supplemented with different levels of organic mineral at 1 (OM1), 2 (OM2) and 4
(OM4) g/100 g diet. Positive control was a diet without OM inclusion but
supplemented with commercial mineral mixture at level of 4 g/100 g diet.
Juvenile vannamei shrimp with average initial body weight of 3.5±0.1 g were
stocked into 12 tanks with a capacity of 200 L. After 75 days feeding trial,
highly significant weight gains was observed in shrimp fed OM at all levels
compared to the positive control. However, no significant differences were
found among dietary OM groups. The growth response was clearly shown by the
same values of SGRs in the three OM supplemented groups (1.1%/d) and only
differed significantly from positive control. Increasing of dietary OM
significantly improved survival rate of shrimp where the highest was observed
in group fed OM1 and the lowest was in control diet. Effect of dietary OM on
whole body Ca and P were quite similar while whole body Ca and P content of OM1
group was slightly high and tended to decrease in two groups with higher level
dietary OM. However, no significant differences among the treatment groups. A
clear response of supplementing OM in diet was detected on whole body Zn
content. Increase of dietary OM resulted in an increase of Zn content in whole
body. The effect was clearly shown when diet contained 2% and 4% OM. Carapace
Ca content was highly significant when diet contained 2% OM. Similar to whole
body Zn content, there was also a linear trend of response dose of dietary OM
on carapace Zn content which the highest was found in dietary OM4. Based on
growth, survival rate, and Zn content in whole body and carapace, dietary OM at
1 g/100 g diet can replace mineral mixture as mineral source in diet of
vannamei shrimp.
Keywords: organic mineral;
carapace mineral; growth; vannamei shrimp
Author: Asda Laining, Rachman
Syah, Muslimin
Journal Code: jpperikanangg150043