Apparent nutrient digestibility of carbohydrate (corn) in Cirrhinus mrigala under the influence of chromium chloride hexahydrate

Digestibilidade aparente de nutrientes oriundos de carboidratos (milho) em Cirrhinus mrigala sob a influência do cloreto de cromo hexa-hidratado

Abstract

A feeding trial was carried out to assess the effect of dietary chromium supplementation on apparent nutrient digestibility coefficient (%) of gelatinized and non-gelatinized corn in Cirrhinus mrigala fingerlings for 90 days. Using various levels of chromium chloride hexahydrate six test diets designated as T1 (G/0.0 Cr₂Cl_3.6H₂O mg Kg^-1), T2 (NG/0.0 Cr₂Cl_3.6H₂O mg Kg^-1), T3 (G/0.2 Cr₂Cl_3.6H₂O mg Kg^-1), T4 (NG/0.2 Cr₂Cl_3.6H₂O mg Kg^-1), T5 (G/0.4 Cr₂Cl_3.6H₂O mg Kg^-1) and T6 (NG/0.4 Cr₂Cl_3.6H₂O mg Kg^-1) were prepared. Results showed highest apparent digestibility coefficient (ADC) of nutrients dry matter, crude lipid and gross energy in test diet T5 that was gelatinized and supplemented with chromium 0.4 mg/Kg while, for crude protein higher value of nutrient digestibility was recorded in T3 test diet (G/0.2 Cr₂Cl_3.6H₂O mg/Kg). It was concluded that chromium supplementation with gelatinized corn in fish (Cirrhinus mrigala) diet can improve the nutrients digestibility more efficiently.

Keywords:
dietary chromium; apparent digestibility coefficient; corn and Cirrhinus mrigala