Nutritional effects of additives containing organic acids, cinnamaldehyde and permeabilizer on some growth indices and intestinal structure of whiteleg shrimp, Litopenaeus vannamei

Afshari, Fatemeh; Sotoudeh, Ebrahim; Ghasemi, Ahmad; Torfi Mozanzadeh, Mansour

doi:10.22124/janb.2023.24057.1187

Nutritional effects of additives containing organic acids, cinnamaldehyde and permeabilizer on some growth indices and intestinal structure of whiteleg shrimp, Litopenaeus vannamei

Document Type : Research Paper

Authors

¹ Department of Fisheries, Faculty of Nano and Bio Science and Technology, Persian Gulf University, Bushehr, Bushehr, Iran

² Persian Gulf Research Center, Persian Gulf University, Bushehr, Iran

³ South Iran Aquaculture Research Centre, Iranian Fisheries Science Institute (IFSRI), Agricultural Research Education and Extension organization (AREEO), Ahwaz, Khuzestan, IranKhuzestan, Iran

10.22124/janb.2023.24057.1187

Abstract

This study investigated the effects of feed additive containing organic acids, cinnamaldehyde and permeabilizers on growth rate and intestine structure of whiteleg shrimp (Litopenaeus vannamei). So, five isoproteic (∼38%) diets containing different levels of 3, 6, 9 and 12 g/kg (T₃, T₆, T₉ and T₁₂, respectively) commercial additive Biotronic Top 3 were formulated and a diet without this additive were considered as a control. Shrimps (2.7 g in average weight) were randomly placed in fifteen 300-liter fiberglass tanks containing sea water (20 shrimps in each tank) and each experimental treatment was in triplicate. Shrimps were fed at the rate of 7% of their body weight three times a day. At the end of the experiment, the average final weight in shrimps fed with diets containing additives was significantly higher than the control group (p<0.05). The highest average final weight was observed in T₃. However, the addition of higher levels of this additive did not show any significant effect on the final weight of shrimps (p>0.05). The food conversion ratio in the treatments fed with additives, (except for T₉) was significantly lower than the control group (p<0.05). Examining the shrimp intestine showed that using this additive elevated the height of the intestinal villi. In general, according to the findings of this study, dietary supplementation of Biotronic Top 3 at 3 g/kg can enhance the growth rate and intestine histology of whiteleg shrimp.

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