Sxmnnary 



Laboratory and pilot -plant- scale tests show promise for the use 

 of sodium bisulfite as a preservative for salmon eggs for hatchery- 

 fish feeding. A semi-commercial-scale preservation test of salmon eggs 

 treated with sodium bisulfite was inconclusive, owing possibly to the 

 absorption of salt by the eggs in the plant fluming operations. Another 

 commercial-scale test is warranted. 



Sodium bisulfite, when incorporated as 0.5 percent by weight of 

 salmon eggs, is non-toxic to hatchery-reared fish. 



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