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Shrimp Feed Pellets

Shrimp Feed Pellets
During the culture period of shrimps, generally, different types of feed are used. In most cases, starter feeds as well as grower feeds have identical nutritional values. The only difference is the physical appearance in terms of pellet length and pellet or crumble diameter. However,lack of understanding of shrimps' eating behaviour makes feeding more expensive.

shrimp feed pellet

Eating behaviour of shrimps
Shrimps do not swallow the feed like fish are doing. They use for the indigestion of food their second pair of chelated legs for holding and cutting it with the mandibles. This means that the animals are nibbling on the food and not swallowing it. Since shrimps are slow eaters, the water durability of the feed is more important than the pellet or crumble size.Generally, the feed is consumed within two hours after application. However, it was found that 50% of the applied feed is consumed within 30 minutes.
Pellets compare to crumbles
Crumbles are obtained by manufacturer of pellets and crushing them afterwards into the required particle size. Due to this process the protecting surface of pellets is destroyed with the result that the water penetrates easily into the crumbles with the consequence that they fall apart quickly.While pellets have a better water durability of at least 21/2 hours. The protecting surface reduces the water penetration into the pellet. This ensures also slower leaching of chemo-attractants and nutrients and hence better consumption of feed and faster growth. Pellet-fed shrimps ingested the feed faster and they looked healthier compared with the control.In all trials, there were no cases of mortality. Crumbled starter feed on the other hand, is a water pollutant and can be replaced successfully by pelleted starter feed.

fish pellet food

Pelleting process description
After selecting the ingredients and determining their amount in the feed mixture the ingredient is powdered finely and sieved. These powders are weighed to the required level and mixed with suitable quantity of mineral mix and binders. The mixture is made into a hard dough using optimum amount of water. This dough is made into small balls and steamed. After steaming they are cooled and the vitamin mix is added. Then the balls are broken and thoroughly mixed to make it as homogeneous as possible. The mixture is passed through a die to make it into pellets. The pellets are dried and packed to store. The moisture content in such dry feed should not be more than 12 per cent. Feed in dry pelleted form is easy to manufacture, store, transport and handle at the time of feeding.