Withania coagulans fruit extract: a possible useful additive in ameliorating growth and immunity of Labeo rohita (Hamilton, 1822)

This study aimed to assess the Withania coagulans fruit extract's effects on growth and haematological parameters of Labeo rohita. Healthy fish (n = 120) were divided in four groups. Experimental diet was prepared with different extraction of W. coagulans (0%, 1%, 1.5% and 2%). Diet was provided for eight weeks to all groups except the control group which fed on basal diet. The 1.5% and 2% W. coagulans extracts lead improvement in feed conversion ratio and specific fish growth rate; haematological parameters in fish group fed with 2% of W. coagulans showed increased in WBC, RBC, Hb, MCHC, PCV. The values of plasma proteins and lysozyme activity were higher in the experimental group compared control group. Fish fed with W. coagulans extracts showed increased of immunity and less mortality respect to others. It suggested that W. coagulans could be considered valuable support for the improve growth and immunity in Labeo rohita.

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