Ramasamy RAMASUBBURAYAN, Palanisamy IYAPPARAJ, Kanaharaja Joselin SUBHASHINI, Manohar Navin CHANDRAN, Arunachalam PALAVESAM, Grasian IMMANUEL

Characterization and nutritional quality of formic acid silage developed from Marine fishery waste and their potential utilization as feed stuff for common carp Cyprinus carpio fingerlings

The present study was undertaken to bring out a cost effective feed from fish silage for promoting growth in common carp, Cyprinus carpio. For this, acid silages were prepared using fishery wastes supplemented with three different concentrations (2, 2.5 and 3%) of formic acid and fermented for 30 days. During fermentation, the physicochemical parameters and aerobic plate count of silage products were estimated for 30 days at an interval of 10 days. Results indicated that pH, dry matter, ash, protein contents and aerobic plate count showed a declining trend during ensilaging day’s interval. However, lipid and mineral contents were gradually increased up to 30th day. After 30 days of fermentation, the amino acids and vitamins were quantitatively as well as qualitatively ascertained in all silages. Further, the individual silage products were used as one of the major ingredients to prepare formulated diets (E1: 2%; E2: 2.5% and E3: 3%). The prepared diets were fed to C. carpio fingerlings for 45 days and the growth promoting efficacy of the diets was tested. From the results it was understood that, 2% acid silage diet had higher weight gain (2.38g), SGR (1.49%) and significant increase in biochemical constituents than other diets fed fish

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