How Many Fish Feed Pellets to Feed Your Fish

Pellet making machine can make fish feed pellets. The number of fish feed pellets that an individual fish can catch is related to its swimming activity, which is, in turn, partially temperature-dependent. Zhengzhou Fusmar is a professional fish feed extruder manufacturer.

fish feed machine

Rainbow trout could catch larger numbers of pellets in a single feed portion as temperatures increased from 5 to 15°C under laboratory conditions; this change is likely mediated by changes in the fish’s activity at different temperatures. The feeding rate of brown trout increased rapidly between 3.8 and 6.8°C, remaining relatively stable between 6.8 and 19.3°C, before decreasing at temperatures above 19.3°C. Changes in the feeding and swimming activity of salmonids at different temperatures have been presented by others with the greatest change in activity occurring between 5 and 10°C. In aquaculture, the feed delivery rate should therefore be taken into account when calculating a feeding regime.

fish feed pellets

The size of feed pellets and the rate at which they are delivered may affect the amount of feed an individual fish can ingest over a period of time. Pellets of sub-optimal size or pellets that are delivered at a high rate may cause wastage, as fish may be unable to catch large numbers of pellets before they sink through the net pen. Salmon farmers use many different sizes of feed pellets during the grow-out period, and each time the size is changed, new calculations for the optimal number of pellets per fish and delivery must be done. It would therefore save both time and money if fewer sizes of pelleted feed can be used for larger parts of the grow-out period.

fish feed pellet production line

At some extreme, pellet size will obviously have an effect on fish performance, and there are indications of this effect presented here. For example, a pellet that is larger than the gap width of the fish or is so large that handling time becomes a limiting factor in the fish’s ability to ingest enough pellets to maintain good growth will clearly have adverse effects. Adult salmon showed a more immediate response to larger pellets but that these were more likely to be rejected than pellets of a shorter length. 

fish feed pellet machine

Pellets slightly smaller than the ‘‘normal’’ commercial size were eaten at the...

Do you already have an account? Log in here

Amy Yan

Amy Yan

Sales Manager, Zhengzhou Fusmar Machinery Co.,Ltd

Zhengzhou Fusmar Machinery Co.,Ltd is a professional fish & animal feed pellet machinery and wood pellet machinery manufacturer. We have our own engineer and sales team to provide best machines and services to our customers worldwide.

View all posts of Amy

Join the discussion


To read and post comments you need to login or register