Adding different levels of vitamin B12 to an aquaponic system using Nile tilapia (Oreochromis niloticus) and Saffron plant (Crocus sativus), and its effects on fish and plant growth and biochemical blood indices of fish

Document Type : Biology(Animal)

Authors

Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran

Abstract

In order to know the optimal level of addition of vitamin B12 to water, in a Aquaponic system using Nile tilapia (Oreochromis niloticus) and Saffron plant (Crocus stativus), 240# Nile tilapia fish and 120# corms of saffron were randomly divided into 12 experimental groups and influenced by treatments of adding 0 (control), 10, 20 and 30 mg L-1 vitamin B12 to water, weekly, for 60 days experimental period. At the end of the experiment period, weight gain and other indices of fish growth performance did not show any significant differences in any of the treatments, but some growth performance indices of saffron plants such as leaf length showed the lowest rate in treatment of 30 mg L-1 and root weight in treatment of 30 mg L-1 vitamin B1 in water was significantly higher than other treatments. Measurement of serum biochemical parameters of fish showed that with increasing levels of vitamin B12 in water, treatment with 30 mg L-1 vitamin in water showed the highest amount of Alkaline phosphatase enzyme and Aspartate aminotransferase enzyme in blood serum of fish. Finally, the results indicate that adding 10 to 20 mg L-1 vitamin B12 to the water of the aquaponic system using saffron plant and Nile tilapia can improve the growth and yield of the saffron plant.

Keywords


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