Effect of cannabis oil on growth performance, haematology and metabolism of Nile Tilapia Oreochromis niloticus
| Autor: | Nivin Nasser, Samer Monzer, I. Patrick Saoud, Jessica Babikian |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
food.ingredient biology business.industry Tilapia Hemp oil Aquatic Science biology.organism_classification Feed conversion ratio Biotechnology Toxicology 03 medical and health sciences Nile tilapia Oreochromis Ingredient 030104 developmental biology 0302 clinical medicine food Composition (visual arts) Cannabis business 030217 neurology & neurosurgery |
| Zdroj: | Aquaculture Research. 49:809-815 |
| ISSN: | 1355-557X |
| Popis: | Cannabis sativa is a plant that produces an oil with psychoactive and stress reduction effects and thus illegal in many nations. Lately, the beneficial properties of the plant extract are becoming better understood and perceptions are changing. As the aquaculture industry matures from a primitive extensive pond system to an industrialized intensive system, fish stress and disease incidence are increasing, with negative economic results. A nutritional ingredient that could reduce stress and disease incidence in aquacultured fish would thus be opportune. In the present work we investigated whether ether extracted cannabis oil would relieve stress, improve growth and feed conversion, and/or improve haematological indicators of disease resistance. Three diets were made to contain either soy oil, industrial hemp oil or cannabis oil and offered to tilapia for 8 weeks. At termination, survival, growth, feed conversion and blood parameters were assessed. Fish were returned to their tanks, offered the same feeds as during the experiment and respiration assessed. Cannabis extract was found to increase metabolism and thus increase feed conversion. On the other hand, cannabis had no effect on blood cell counts, total plasma protein, haematocrit or lysozyme activity. Results thus suggest that cannabis does not improve immune response of tilapia or body composition but does reduce growth rate by increasing metabolic rate. |
| Databáze: | OpenAIRE |
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