Evaluation of Yucca schidigera and Quillaja saponaria on Growth Parameters and Enzymes Activities of Juvenile Shrimp Litopenaeus vannamei Cultured in Low-Salinity Water

Gabriel Aguirre


DOI: https://doi.org/10.3856/vol44-issue1-fulltext-12

Abstract


The inclusion of Yucca schidigera and Quillaja saponaria extracts (NTF) in aquatic organisms display a positive effect on production and organism’s physiology. Fifteen tanks (140-L) with low-salinity water (5‰) were stocked with ten juvenile shrimp (Litopenaeus vannamei, 2.6 g of mean weight) feeding with 0, 0.250, 0.500, 1.0 or 2.0 g of NTF Kg-1 of basal diet (triplicate treatment). The shrimp were cultured in a close recirculation system (control condition) and fed ad libitum daily for 40 days. General growth parameters (body weight, growth, body length, feed conversion rate, survival, etc.) and hepatopancreatic digestive enzyme activities (alkaline protease, alkaline phosphatase, α-amylase, leucine aminopeptidase, and lipase) were evaluated after 40 days of shrimp culture. The final mean body weight, individual mean body, weight gain, and feed conversion ratio from shrimp feeding with 1.0 and 2.0 g of NTF Kg-1 have a significant (P < 0.05) positive result compared to other experiments. The highest values of alkaline protease, lipase, and α-amylase were detected in shrimp feeding with 0.500 g of NTF Kg-1, where a high level of leucine aminopeptidase and alkaline phosphatase were detected with 0.250 g of NTF Kg-1 treatment. However, any significant differences in enzyme activities were detected between the control group and treatments. The positive effect in shrimp growth and any negative effect in enzyme activity detected in present study suggest that NTF shows potential as a feed additive for shrimp cultured at low-salinity.


Aguirre G. Evaluation of Yucca schidigera and Quillaja saponaria on Growth Parameters and Enzymes Activities of Juvenile Shrimp Litopenaeus vannamei Cultured in Low-Salinity Water. Lat. Am. J. Aquat. Res.. 2017;44(1). Available from: doi:10.3856/vol44-issue1-fulltext-12 [Accessed 22 Jan. 2019].
Aguirre, G. (2017). Evaluation of Yucca schidigera and Quillaja saponaria on Growth Parameters and Enzymes Activities of Juvenile Shrimp Litopenaeus vannamei Cultured in Low-Salinity Water. Latin American Journal of Aquatic Research, 44(1). doi:http://dx.doi.org/10.3856/vol44-issue1-fulltext-12