Effects of partial replacement of fishmeal with blood meal and dried porcine soluble on the growth, body composition and intestinal morphology of Cyprinus carpio

Abstract

A 12‐week feeding trial was conducted to assess the impact of fishmeal replacement with blood meal or dried porcine solubles on the growth performance, body composition and intestinal morphology of common carp (Cyprinus carpio). Fishmeal was 50% substituted with either blood meal or dried porcine solubles, or two‐third substituted with both alternative products, at a 1:1 ratio. There was no significant difference in survival, final weight, weight gain ratio, feed conversion ratio or condition factor between the control and experimental groups (p > .05), although the visceral somatic index of the blood meal group was higher than that of the control group (p < .05). Crude lipid content was significantly higher in the dried porcine soluble group than that in the control group (p < .05), while other nutrient levels were not significantly different (p > .05). The amino acid composition of each experimental group was not significantly different from that of the control (p > .05). The intestinal villus height and fold depth of each experimental group were significantly lower than those of the control group (p < .05). The results of this study show that two‐third fishmeal substituted with both blood meal and dried porcine solubles, at a 1:1 ratio, is the optimal fishmeal replacement for common carp growth.

Addition of enzyme‐digested hydrolysed porcine mucosa to low‐fishmeal feed improves growth, intestinal microbiota, and intestinal peptide and amino acid transporter expressions in hybrid groupers ( Epinephelus fuscoguttatus ♀ × E. lanceolatus ♂)

“…This means that 30 g/kg EH is feasible for hybrid grouper feed. Other studies replacing FM with EH have reported no significant effects on WGR and SR in carp ( Cyprinus carpio ; Gao et al., 2020) or on WGR and FIR in feeding nursery pigs (Fig ueroa et al., 2016), which is consistent with the present results. Substituting FM with EH does not reduce growth performance, most likely because EH is rich in small peptides.…”

“…The expression of PepT1 was significantly lower in group EH0 than in other groups (p < .05, Figure 10). Gao et al, 2020) or on WGR and FIR in feeding nursery pigs (Fig ueroa et al, 2016), which is consistent with the present results. Substituting FM with EH does not reduce growth performance, most likely because EH is rich in small peptides.…”

“…However, the intestinal morphology of the MI in this experiment showed a downward trend as the substitution ratio increased. A similar situation was found in a study of carp; when HPM replaced FM, the VL and fold depth were significantly reduced (Gao et al., 2020). The specific reasons may need further study.…”

“…when HPM replaced FM, the VL and fold depth were significantly reduced (Gao et al, 2020). The specific reasons may need further study.…”

Bioavailability of porcine blood meal as a fish meal substitute in the diet for red sea bream ( Pagrus major , Temminck & Schlegel) fingerling

“…On the contrary, the use of BM in feed for pigs and poultry is partially licensed, and its use in fish feed is fully approved. So far, the use of BM has been investigated not only in layers (Donkoh et al, 2001;Karunajeewa et al, 1989), broilers (Khawaja et al, 2007;Laboissière et al, 2020) and pigs (Kats et al, 1994;King'ori et al, 1998), but also in fish (Abery et al, 2002;Aladetohun & Sogbesan, 2013;Ding et al, 2020;Gao et al, 2020;Hatlen et al, 2013Hatlen et al, , 2015Martínez-Llorens et al, 2008). Based on previous studies on fish, 4%-9% BM can be included in the feed without any adverse effect on growth and feed efficiency.…”