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
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Date
2023
Journal Title
Journal ISSN
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Publisher
Faculty of Veterinary Medicine at Chiang Mai University
Abstract
In a 56-day feeding trial, the impact of dietary cinnamon supplementation on juvenile Heteroclarias
(Clarias gariepinus ♀ × Heterobranchus bidorsalis ♂) was examined. Five experimental diets with
varying levels of cinnamon powder (ranging from 0% to 2.0%) were formulated. The study found that
cinnamon supplementation positively influenced the fish's growth, haematology, serum biochemistry,
intestinal microbiota, and enzyme activities. The group fed with 1.5% cinnamon (DT4) showed the highest
growth performance, haematological indices, antioxidant, and hindgut enzyme activities. Additionally,
the cinnamon-fed groups exhibited a significant reduction in total cholesterol levels, except for the 0.5%
cinnamon-fed group (DT2). Blood glucose, blood urea nitrogen, and creatinine levels also decreased
significantly in the cinnamon-fed groups compared to the control. Cinnamon supplementation increased
bacterial counts, but fungi counts showed diverse effects, with the most favourable diversity indices
observed in the 1.5% cinnamon group (DT4). Amylase, cellulase, and trypsin activity in the cinnamon-fed
group were significantly higher than in the control group. Notably, all cinnamon-fed groups' intestine,
liver, and kidney microstructures remained well-preserved, without any signs of injury. This study
demonstrates that cinnamon has the potential to enhance the growth and overall well-being of African
catfish hybrids. The optimal outcomes were observed when cinnamon was supplemented at a level of
1.5%, which can have significant implications for improving aquaculture practices and fish health