Effects of Dietary Soybean Oil Replacement by Silkworm, Bombyx mori L., Chrysalis Oil on Growth Performance, Tissue Fatty Acid Composition, and Health Status of Juvenile Jian Carp, Cyprinus carpio var. Jian

Abstract

Five triplicate groups containing 15 Jian carp (33.51 ± 1.91 g) were fed five isonitrogenous (30%) and isolipidic (8%) diets, with an increase in silkworm chrysalis oil (SCO) to replace soybean oil (SO) at 0 (SO), 25 (SCO25), 50 (SCO50), 75 (SCO75), or 100% (SCO100) levels for 59 d. Results showed that the SCO50 and SCO75 groups presented higher thermal growth coefficients than the SO and SCO100 groups and lower feed conversion ratios than the SCO100 group (P < 0.05). Moreover, the 50% SCO‐supplemented level decreased hepatopancreas lipid content and increased muscle crude protein content (P < 0.05). Meanwhile, α‐linolenic acid, n‐3 polyunsaturated fatty acid (PUFA) content, and n‐3/n‐6 PUFA ratio increased in the hepatopancreas, and intraperitoneal fat and muscle as the replacement of SO increased (P < 0.05). No significant differences of the serum biochemical indices and hepatopancreatic malondialdehyde content were found among groups (P > 0.05), but hepatopancreatic superoxide dismutase activities in the SCO25 and SCO50 groups were significantly higher than those in the other groups (P < 0.05). There was no significant difference in muscularis coat thickness, fold height, and fold width in the mid‐intestine (P>0.05). Overall, up to 50 or 75% replacement of SO by SCO in the diet of Jian carp could improve growth performance without affecting the health status of the fish.

Effects of dietary lipid sources on growth performance, fatty acid composition and hepatic lipid metabolism of juvenile blunt snout bream, Megalobrama amblycephala

“…Therefore, the content of plasma TP, ALB and GLB is an indirect indication of innate immune function (Habte‐Tsion et al., ; Mozanzadeh et al., ; Ren et al., ). In the present study, there are no significant differences in plasma TC, TG, LDL and HDL of all groups consistent with Chen, Tian, Wang, and Yang () who reported no differences in the plasma TC, TG, HDL, LDL and glucose in Jian carp, Cyprinus carpio var. Jian between the soybean oil group and silkworm chrysalis oil.…”

Mechanical Processing of Hermetia illucens Larvae and Bombyx mori Pupae Produces Oils with Antimicrobial Activity

“…A comparison of the composition of BSFL and SP oil performed in this and other studies ( Supplementary Material—Figure S5 ) [ 19 , 27 , 28 , 29 , 30 , 31 , 32 ] demonstrated that BSFL oil contains less polyunsaturated fatty acids (PUFA) and monounsaturated fatty acids (MUFA) than SP oil and more saturated fatty acids (SFA). To compare our data on BSFL with those reported in the literature, we choose studies in which larvae were reared on vegetable substrates.…”

Partial Dietary Inclusion of Hermetia illucens (Black Soldier Fly) Full-Fat Prepupae in Zebrafish Feed: Biometric, Histological, Biochemical, and Molecular Implications

“…Indeed, the experimental groups showed comparable survival rates, in accordance with previous studies on various fish species. 18,19,37,38 Growth (standard length and mean dry weight) was also similar among the groups up to 14 dps; however, even if the three diets were isoenergetic, at 21 dps, Group B larvae were significantly bigger (standard length and mean dry weight) with respect to both Control and Group A larvae. Biometric data were fully supported by the molecular results about growth factors (igfs and mstn) and were in accord with previous studies on other fish species such as rainbow trout (Oncorhynchus mykiss), channel catfish (Ictalurus punctatus), and blue tilapia (Oreochromis aureus).…”