Responses by hybrid carp, Barbonymus gonionotus ♀ × Hypsibarbus wetmorei ♂, FED diets containing selected leafmeals

Abstract

In a 56‐day feeding trial, the effects of dietary inclusion of four fibre‐rich‐leaf meal‐based diets (Napier, alfalfa, Gliricidia, or Ipomea) on growth, haemato‐biochemical parameters, and histology of the intestine, liver, and kidney in hybrid lemon fin barb fingerlings were investigated. Each of the leaf meals was included at 10 g 100 g−1 in five dietary treatments. As a control, a diet with no leaf meal was used. Each diet was randomly allocated to three tanks and the hybrid fish were also randomly stocked in 60 L glass tanks at 15 fish per tank. When compared to the control group, the leaf meal‐treated groups performed better in terms of growth, which was significantly (p < .05) higher with Ipomea‐ and Napier‐fed groups. Ipomea‐fed fish had the best performance among the leaf meal groups. The leaf meal‐based groups had numerically greater haematological profiles than the control fish but shared statistical similarities (p > .05) with the control group. The PCV, RBC, Hb and WBC levels in fish fed an Ipomea‐based diet were the highest. The serum biochemistry of fish fed different dietary treatments showed significant differences (p < .05). With the exception of the fish fed Ipomea, there were statistical similarities (p > .05) in the total protein, albumin, and globulin contents between fish fed the leafmeal‐based diets and control diets. The intestinal morphology of fish fed test leaf meal‐based diets was normal. The livers of fish given the test leaf meal‐based diets showed moderate to severe widespread vacuolization of the hepatocytes, as well as localized nuclei, with very slight erosion of the mucous membrane at the tips of the villi.

Effect of dietary cinnamon supplementation on the growth in length, haematology, serum biochemistry, intestinal microbiota and enzymes and histomorphological changes of the intestine, liver and the kidney of Heteroclarias (Clarias gariepinus ♀ × Heterobra ♂)

“…Ravardshiri et al (2021) reported a non-significant increase in these parameters for rainbow trout fed cinnamon-supplemented carbohydrate diets. Jimoh et al (2022c) made a similar observation when selected leafmeals were fed to hybrid carp (Barbonymus gonionotus♀× Hypsibarbus wetmorei ♂). In addition to their usual function in blood clotting, platelets are known to have a significant role in innate immunological and inflammatory responses (Holinstat 2017).…”