A new look at the assessment of the silver carp (Hypophthalmichthys molitrix Val.) as a food fish ;

Abstract

Buchtová H., Ježek F. (2011): A new look at the assessment of the silver carp (Hypophthalmichthys molitrix Val.) as a food fish. Czech J. Food Sci., 29: 487-497.The principal aim was to analyse the chemical composition (dry matter, protein, fat, saccharides, ash) and to calculate the energy value of 6 topographically distinct parts (cranial, medial and caudal dorsal/ventral part above/below the lateral line) of the fillets of the silver carp (Hypophthalmichthys molitrix Val.) in two weight categories, i.e. lightweight (LW) fish of 3.50 kg live weight, and heavyweight (HW) fish of 4.50 kg live weight. Another aim was to evaluate the lipid profile of the muscle tissue and internal fat (separated from the internal organs). The study demonstrated differences (P < 0.05) in the chemical composition (with the exception of saccharides) and energy values between the relatively lean dorsal sections of silver carp fillets, which rank the silver carp among medium to low-fat fish (fillet fat content: LW = 46.06 ± 5.54 g/kg, HW = 50.62 ± 5.51 g/kg), and the fatter ventral sections which, in contrast, rank the silver carp among high-fat fish (fillet fat content: LW = 158.14 ± 11.28 g/kg, HW = 157.42 ± 9.65 g/kg). The study showed that the internal fat lipids are an interesting alternative source of ∑PUFAn-3 and, in particular, of α-linolenic acid C18:3n-3 (LW = 4.79 ± 0.25, HW = 5.28 ± 0.33), EPA C20:5n-3 (LW = 2.70 ± 0.17, HW = 3.04 ± 0.15), and DHA C22:6n-3 (LW = 3.08 ± 0.20, HW = 3.41 ± 0.18).

Biochemical composition of Predatory carp (Chanodichthys erythropterus) from Lake Dianshan, Shanghai, China

“…It was indicated that, Chanodichthys erythropterus contain a higher proportion of protein and lower ash content as indicated from the results obtained. Previous studies on proximate analysis by Buchtová et al [23] on a different fish species from the same family confirms the results obtained in this research, however, reports from Ashraf et al [24] are not in concordance with it as they reported higher moisture content and relatively lower protein content for silver carp. This difference might be due to genetical factors as well as extrinsic factors such as feeding regimes and/or exercise significant change in some structural and flesh quality parameters of different fish species.…”

Comparative studies on carcass characteristics of marketable size farmed mrigal Cirrhinus mrigala , (Hamilton, 1822), and silver carp Hypophthalmichthys molitrix, (Val., 1844)

“…The middle cut has comparatively more percentage of edible fillet yield; the fore cut has the higher relative bone content. It is well known that in Hypophthalmichthys molitrix the hind cut is comparatively larger and has more meat and bone when compared with other species (Romavari et al., ; Buchtova and Jezek, ).…”

“…Buchtova and Jezek () demonstrated a significant difference in fat composition between the leaner dorsal part of the silver carp fillet, which ranks among medium to low‐fat fish of 4.6 and 5.1% with live weights of 3.5 and 4.5 kg, respectively; the fatter ventral part ranks the silver carp among the high‐fat fish of 15.8 and 15.7% with weights of 3.5 and 4.5 kg, respectively.…”

Comparison of the lipid properties of healthy and pansteatitis‐affected African sharptooth catfish, Clarias gariepinus (Burchell), and the role of diet in pansteatitis outbreaks in the Olifants River in the Kruger National Park, South Africa

“…This fish is a specialized plankton feeder that by preference feeds off phytoplankton (Kolar et al . ) and is known to assimilate n‐3 fatty acids (Buchtová & Jezek ). It is possible that crocodiles and catfish feed on silver carp when these seasonally migrate from the still waters of the lake into the Olifants River to spawn, and this may provide one explanation for intense intake of excessive polyunsaturated fats by catfish and crocodiles.…”