Every living thing has to feed to survive. They either act as predators or become prey. Shrimps are preyed upon by birds. They preyed on shrimps and reduce the population of the livestock in the pond or water body. Shrimp farmers go through such losses on a yearly basis. They end up losing a large amount of their investment to predator attacks and because of poor management practices. Bird fencing should be checked daily, if any errors that should be corrected in time to protect the crop. It is necessary, because birds negatively affect shrimp production by transmitting or transporting diseases, weed seeds and parasites from pond to pond or from one facility to another.
Using plastic netting for growing shrimps is effective. Netting makes a great predator barrier.
- The feature of the net is that it is lightweight, durable, and a very easy-to-use barrier.
- It protects the shrimp against herons, egrets, and others.
- Birds such as crow/ water crow pick up the dead and moribund shrimps affected with viral disease from ponds and may drop unaffected ponds, thereby transmitting the virus mechanically. This could be avoided by using bird scares and bird fencing over the pond.
- Birds pick up the infected shrimp from one pond and drop into another pond and thus bird netting is to be installed to avoid cross-contamination from one pond to another.
- Nets used for protecting shrimps from birds come in different grades and have different hole size. The net should also be strong enough to withstand the weight and aggression of the birds. The aquaculture net is UV stabilized and has the capacity to withstand UV rays.
- Nets should also be placed properly to secure the entire pond completely. Birds would get aggressive and try to force their way through the net. A properly installed net would also withstand the pressure and weight of predators to give complete protection.
- Protecting shrimps from birds using nets is very effective. Many shrimp farmers who have problems with predator attacks reported success using a net to protect their shrimps.