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Background. Cobalt (Co) is an essential mineral required in trace quantity in the diet of fish. Although freshwater fish are capable of accumulating adequate quantity of trace minerals from the medium, Co is extremely scarce in the freshwater resources. Therefore, freshwater fish require a supplement of Co in the diet. Since information regarding requirement of Co for growth and its balance in the...
Background. Fish are the principal source of n-3 and n-6 fatty acids for humans. Traditionally, these fatty acids have been supplied in the form of captured marine and freshwater fishes. Recently, freshwater cultured species have been increasing their share in the fish volume on the market. Therefore it is crucial for fish farmers to rear fish under proper condition and with proper feeding in order...
Background. Constant improvement of animal feed formulas calls for new raw materials. In the feeding of fish, one of diet recipe optimization methods is to search for feed protein sources alternative to fish meal. The presently reported study focuses on an unconventional protein source—the erythrocyte meal—for feeding fry of common carp. Materials and Methods. The barothermal method (extrusion) was...
The studies determined the effect of carp feeds supplemented with the probiotic preparation BIOSAF, a concentrate of live yeast, Saccharomyces cerevisiae strain Sc 47, on the growth and food conversion ratio of carp juveniles. Four types of granulated experimental feeds were prepared; three contained different quantities of the BIOSAF probiotic (B1 - 0.5 g kg⁻¹; B2 - 1.0 g kg⁻¹; B3 - 1.5 g kg⁻¹) and...
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