Comparative fatty acid profiles of wild and farmed tropical freshwater fish rohu (Labeo rohita)

Abstract

The proximate composition of the whole body and the fatty acid composition of the liver, muscle, eye and brain of wild and cultured rohu (Labeo rohita) were analyzed. The cultured species was found to have significantly (P < 0.05) higher lipid contents than its wild counterpart. The saturated (SFA) and monounsaturated (MUFA) fatty acid contents were significantly higher in the cultured species, whereas the n-6 and n-3 polyunsaturated fatty acid (PUFA) levels were higher in the wild species. Fatty acids C16:0 and C18:1 n-9 were the principal fatty acids of the SFAs and MUFAs, respectively, identified in the analyses. Docosahexaenoic acid, eicosapentaenoic acid, and arachidonic acid were the predominant PUFAs in both groups, and all three were found to be present at significantly (P < 0.05) higher levels in the wild species. Erucic acid (C22:1 n-9), which was the predominant fatty acid (30.76%) in the feed, was detected only at low levels in muscle (0.30%), liver (1.04%) and eye (1.28%) of cultured fish tissue.

The composition of fatty acids stored in liver, muscle and fat tissues of the African lungfish Protopterus annectens (Owen, 1839)

“…The level of oleic acid in the American freshwater channel catfish flesh was also high compared to sardine and sea mullet (Ackman, 1994). Although level of oleic acid was lower than the level found in some freshwater fish (Khoddami et al, 2009), it was almost similar to the level reported in other freshwater fish (Zenebe et al, 1998;Bieniarz et al, 2000;Saba et al, 2000;Ackman et al, 2002;Ben Smida et al, 2009;Sharma et al, 2009;Ugoala et al, 2009;Elagba and Al-Sabahi, 2011). The variation of n-3 PUFA detected in the different studied organs of P. annectens ( Figure 6) was to some extent within the range found in other fish species (Suriah et al, 1995).…”

“…These parts may contribute to the total level of fatty acids, thus increasing the nutritional value of the fish. However, little is known about the fatty acids composition and profiles (%) of the Nile fishes (Elagba and Al-Sabahi, 2011) compared to other freshwater fishes (Ahlgren et al, 1994;Suriah et al, 1995;Zenebe et al, 1998;Bieniarz et al, 2000;Ackman et al, 2002;Fawole et al, 2007;Sharma et al, 2009;Ugoala et al, 2009). The present study is a first approach to determine the fatty acid composition and profiles of the African lungfish Protopterus annectens.…”

Effect of Algae Based Diets on Growth Performance, Body Composition and Fatty Acid Profile of Indian Major Carp, Rohu Labeo Rohita, Hamilton)

“…Locally available ingredients, predominantly of plant origin, are used to formulate fish feed which are rich in saturated, monounsaturated fatty acids (MUFA) of n-6 type (Veerina et al, 1999). In a comparative fatty acid profile study of wild and farmed rohu, Sharma et al (2010) reported significantly higher lipid with SFA and MUFA content in cultured species but wild fish was found to have higher n-3 and n-6 PUFA, which may be due to the natural food like algae that the wild fish consumes. Few earlier studies suggest that nutrient contents of farmed fish is more uniform than wild and that fat content of farmed fish exceeds that of wild (Hossain, 2011).…”

A study of the fatty acid profile in the muscle of Monopterus chuchia

“…Thus the importance of consumption of unsaturated fatty acids, the best source of which is fish oil cannot be ignored. So effort to detect and preserve both fresh water and salt water fish rich in unsaturated fatty acids is evident throughout the world [15][16][17][18] .…”