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Effect of dietary supplementation of Padina astraulis (Hauk, 1887) extract on biochemical response and digestive enzyme activities of grey mullet, Mugil cephalus (Linnaeus, 1758)
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P. Akbary *   , N. Shahraki |
| Fisheries Group,Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran , paria.akbary@gmail.com |
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Abstract: (2857 Views) |
| This research aimed to assess the effect methanol extract from Padina astraulis (Hauk , 1887) on biochemical response and digestive enzyme activities in grey mullet, Mugil cephalus (Linnaeus, 1758). A control diet without and three other empirical regimens were prepared with the addition of of P.astraulis extract (PE diet) at the incorporation levels of 5, 10 and 15 g kg-1 diet, respectively. Three hundred sixty grey mullet with an introductory mean weight of 0.82 g were randomly dispersed into twelve fish tanks and fed twice a day (09:00 and 17:00) for 60 days. After 60 days of the feeding trial, no significantly different was noticed in terms of survival rate between control and the groups supplemented with PE (p>0.05). Dietary PE significantly increased serum total protein, globulin levels and amylase, lipase and protease enzyme activities in treated fish (p<0.05). Moreover, there was considerable decline (p<0.05) in cholesterol, glucose and triglyceride levels in those fish which received PE diet over the control. The current research illustrates the appropriateness of P. astraulis extract as a novel dietary additive in grey mullet diet for improving metabolism of lipid and carbohydrate and enhancing digestive enzyme activities in grey mullet.
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| Keywords: Padina astraulis, Mugil cephalus, Biochemical response, Digestive enzymes, Dietary supplement |
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Full-Text [PDF 383 kb]
(1293 Downloads)
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Type of Study: Orginal research papers |
Subject:
aquaculture
Received: 2016/08/25 | Accepted: 2017/04/23 | Published: 2020/07/20
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