Chromium supplemented carbohydrate diets for <i>Cirrhinus mrigala</i>: effects on body composition, gut enzyme activity and hematological parameters

Asad, F.; Ashraf, A.; Rafique, A.; Qamer, S.; Naz, S.; Ali, T.; Shaheen, Z.; Mazhar, A.

doi:10.1590/1519-6984.247284

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Brazilian Journal of Biology

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Original Article • Braz. J. Biol. 83 • 2023 • https://doi.org/10.1590/1519-6984.247284 copy

Chromium supplemented carbohydrate diets for Cirrhinus mrigala: effects on body composition, gut enzyme activity and hematological parameters

Dietas com carboidratos suplementados com cromo para Cirrhinus mrigala: efeitos sobre a composição corporal, atividade enzimática intestinal e parâmetros hematológicos

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

A ninety days nutritional trial was directed to explore the effects of dietary chromium on body composition, gut enzyme activity and physiological status of Cirrhinus mrigala by using G & NG corn. Six experimental diets were prepared by using different levels of chromium chloride hexahydrate (0, 0.2, 0.4 mg/kg, each with G & NG corn). For this experimental trial, 480 fingerlings, irrespective of sex were distributed in six aquariums each with replicate. Results revealed that gelatinized corn along with increasing level of Cr2Cl3.6H2O have a positive impact upon body composition of fish. Hematology was positively correlated with chromium chloride hexahydrate supplementation in gelatinized corn. Amylase gut enzyme also showed significant (P<0.05) increase in group fed with chromium chloride hexahydrate supplemented diet (G corn). However, corn with chromium chloride hexahydrate supplementation did not revealed any significant impact on gut protease enzyme activity. From these results it can be concluded that both chromium chloride hexahydrate and gelatinized corn in fish feed are very beneficial to improve body composition, enzymes activity and physiological health status of fish.

Keywords:
chromium; Cirrhinus mrigala; body composition; hematology and enzyme activity

Dietary Treatments	Dry matter (%)	Ash (%)	Crude lipid (%)	Crude protein (%)	Gross Energy (Kcal/g)
T1 (G) 0 mg/kg CrCl₃ • 6H₂ O.	94.10 ± 0.10BC	86.05 ± 0.05BC	26.25 ± 0.25DE	28.10 ± 0.60B	572.81 ± 2.33C
T2 (NG) 0 mg/kg CrCl₃ • 6H₂ O	95.15 ± 0.15ABC	87.05 ± 0.15ABC	24.25 ± 0.25E	32.83 ± 0.02A	572.59 ± 1.36C
T3 (G) 0.2 mg/kg CrCl₃ • 6H₂ O	97.25 ± 0.25A	84.50 ± 1.00C	32.00 ± 1.00C	33.06 ± 1.81A	621.08 ± 3.75B
T4 (NG) 0.2 mg/kg CrCl₃ • 6H₂ O	93.25 ± 0.25C	88.50 ± 1.50A	26.75 ± 0.75D	34.98 ± 0.78A	579.61 ± 3.83C
T5 (G) 0.4 mg/kg CrCl₃ • 6H₂ O	97.25 ± 0.25A	89.50 ± 0.50 AB	38.45 ± 0.45A	35.10 ± 0.57A	658.08± 4.29A
T6 (NG) 0.4 mg/kg CrCl₃ • 6H₂ O	95.50 ± 1.50AB	85.00 ± 1.10C	35.35 ± 0.35B	33.43 ± 0.38A	632.06 ± 4.88B

Dietary Treatments	Hb (g/dl)	WBCs (x10³ / µL)	RBCs (x10⁶ /µL)	HCT (PCV)% Packed cell volume	MCV (fL)	MCHC (pg)	MCH (g/dl)
T1 (G) 0 mg/kg CrCl₃ • 6H₂ O.	7.45 ± 0.15AB	6.90 ± 0.30 C	1.65 ± 0.03AB	27.15 ± 0.75A	164.5 ± 0.5AB	32.85 ± 0.85 C	55.00 ± 3.30 A
T2 (NG) 0 mg/kg CrCl₃ • 6H₂ O	7.5 ± 0.150AB	10.9 ± 0.40AB	1.350 ± 0.030B	22.50 ± 0.50B	168.00 ± 10A	39.50 ± 0.50 B	56.50 ± 2.50 A
T3 (G) 0.2 mg/kg CrCl₃ • 6H₂ O	6.600 ± 0.20B	10.20 ± 0.1AB	1.45 ± 0.04AB	19.50 ± 0.50B	136 ± 8.5 ABC	45.00 ± 1 AB	50.50 ± 1.5 AB
T4 (NG) 0.2 mg/kg CrCl₃ • 6H₂ O	6.300 ± 0.20B	10.10 ± 0.20B	1.550 ± 0.1AB	19.00 ± 1.00B	121.00 ± 7.0C	47.50 ± 1.50A	38.00 ± 2.0 C
T5 (G) 0.4 mg/kg CrCl₃ • 6H₂ O	8.550 ± 0.55 A	11.65 ± 0.25A	1.750 ± 0.05A	22.50 ± 0.50B	127.5 ± 6.5 BC	40.00 ± 1.00 B	42.50 ± 0.5 BC
T6 (NG) 0.4 mg/kg CrCl₃ • 6H₂ O	7.45 ± 0.35AB	11.1 ± 0.2 AB	1.700 ± 0.05A	22.00 ± 1.00B	131 ± 1.5 ABC	39.50 ± 1.50 B	48.0 ± 1.0 ABC

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