NUTRITION AND FEEDING 



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Figure 74. Bulk storage of pelleted fish feeds. Dust and "fines" are screened out 

 and collected (arrow), and can be repelleted. This type of storage is preferred to 

 bins that require angering the feed up into a truck, because angering breaks up 

 the pellets. (FWS photo.) 



throw, walk on, or stand on bagged feed. A motorized belt- type bag con- 

 veyor causes the least damage to bagged feed. Close- spaced roller gravity 

 conveyers work well, but the wide-spaced rollers or wheel rollers used for 

 boxes are not suitable for bags and cause breakage of the granules and pel- 

 lets. For handling bulk feed, a bucket elevator is preferred, followed by air 

 lift systems; screw- type augers are least satisfactory. 



If proper storage conditions are not maintained, fish feed will spoil ra- 

 pidly. During storage several factors can cause deterioration of the feed: 



