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Mol Biol Rep. 2018 Nov 15. doi: 10.1007/s11033-018-4483-2. [Epub ahead of print]

Hemp (Marijuana) reverted Copper-induced toxic effects on the essential fatty acid profile of Labeo rohita and Cirrhinus mrigala.

Author information

1
Department of Zoology, Islamia College University, Peshawar, Khyber Pakhtunkhwa, Pakistan.
2
Fisheries and Aquaculture Lab, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan. amina.zuberi@qau.edu.pk.
3
Fisheries and Aquaculture Lab, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
4
School of Life Sciences, Nanjing University, Nanjing, 210023, Jiangsu, People's Republic of China. sunyuop@gmail.com.

Abstract

Heavy metals pollution affects the nutritive value of fish. This study examined if the inclusion of dietary hempseed (HS) and hempseed oil (HO) in the diet of the fish could revert the copper-induced toxic effects on muscle fatty acid profile of rohu (Labeo rohita) and mrigal (Cirrhinus mrigala). Fingerlings of both species were exposed to a sub-lethal concentration of copper i.e., 20% of LC50 (1.34 ppm for rohu and 1.52 ppm for mrigal) for 96 h for 30 days. Following exposure, fish were maintained on graded levels of HO (1, 2 and 3%) or on HS (5, 10 and 15%) for 50 days. Copper exposure showed a significant effect on the fatty acid composition of both species; increased their saturated (SFA) to unsaturated (USFA) and altered their omega-3/omega-6 (ω-3/ω-6) ratios. However, feeding graded levels of hempseed products reverted the toxic effects of copper on the fatty acid profile of both the species, significantly increased muscle total fatty acid contents, improved ω-3/ω-6 ratios, and decreased SFA / USFA ratio in % inclusion dependent manner. Furthermore, hempseed product showed a species-specific effect on USFA. The ω-3/ω-6 ratios decreased in the muscle of C. mrigala whereas an increasing trend with an increase in hempseed product % inclusion was observed in L. rohita. Moreover, HS showed a higher impact on both species as compared to HO. With the findings of this study, hempseed product could be recommended as a feed ingredient for enhancing the essential fatty acid contents of fish which in turn can have a good impact on consumer health.

KEYWORDS:

Copper; Essential fatty acids profile; Fish; Hempseed supplementation; Toxicity

PMID:
30443820
DOI:
10.1007/s11033-018-4483-2

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