ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar-751 002, Odisha, India
*Corresponding Author: K.C. Das, ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar-751 002, Odisha, India, Email: kcdasicar@gmail.com
Online published on 8 October, 2021.
There is a scope of increasing the aquaculture production by use of fish feed produced from non-conventional ingredients and also improvement in the quality of feed by solid-state fermentation. The present study was conducted to investigate the effect of solid-state fermented aquafeed on growth performance, digestive enzymes and innate immunity of rohu, Labeo rohita.
Fish feed containing sesame oil cake and mahua oil cake was fermented through solid-state fermentation by yeast, Saccharomyces cerevisiae and then compared with a non-fermented control feed with the same formula.
Solid-state fermentation increased crude protein (CP), decreased crude fibre (CF) and also lowered (p<0.05) anti-nutritional factors (ANF) of fish feed. After five months of experimental feeding, weight gain and digestibility of nutrients like dry matter, crude protein and ether extract were significantly higher (p<0.05) and feed conversion ratio was significantly lower in fish of fermented feed fed group than the control group. Furthermore, non-specific immune parameters such as lysozyme, myeloperoxidase and haemolytic activities and intestinal enzyme activity of fish fed with fermented feed increased significantly (p<0.05) compared to fish fed control feed. It is concluded that feeding of Saccharomyces cerevisiae fermented feed could improve the growth, digestive enzymes activity and immunity of Rohu, Labeo rohita.
Anti-nutritional factors, Digestibility, Immunity, Growth performance, Labeo rohita, Saccharomyces cerevisiae, Solid state fermentation
