Salmon farming is a type of aquaculture where the fish are grown in net cages, typically located in the sheltered bays and fjords along the coast. Salmon are hatched in brood hatcheries and grown in fresh water until they are large enough to transfer to marine pens. The majority of salmon farms in the world because they grow well in farm conditions. Because salmon farm cages are simply suspended in the water and do barrier exists between the farm and the surrounding environment, they are often referred to as “open net-cages”.
Open net-pens, also called sea pens, sea cages or net pens, are usually made of mesh framed with steel or plastic. They can be square or circle, 10 to 32m(33 to 105 ft) acoross and 10m (33ft) deep, with volumes between 1,000 and 10,000 m3 (35,000 and 353,000 cu ft). A large sea cage can contain up to 90,000 fish.
They are usually placed side by side to form a system called a seafarm or seasite, with a floating wharf and walkways along the net boundaries. Additonal nets can also surround the seafarm to keep out predatory marine mammals. Stocking densities range from 8 to 18 kg (18 to 40 lb)/ m3 for Atlantic salmon and 5 to 10 kilograms (11 to 22lb) / m3 for Chinook salmon.
In 2007, the aquaculture of salmonids was worth US$10.7 billon globally. Salmondid aquaculture production grew over ten-fold during the 25 years from 1982 to 2007. Leading producers of farmed salmonids are Norway with 33%, Chile with 31%, and other European producers with 19%.
Advantages of Huaxing Nylon Nets
- 100% pure Nylon
- High smoothness and elasticity
- High resistance to any type of net
- Optimal flexibility
- UV protection
- Resists damage from oil and many chemical
- Fast drying, low moisture absorbency
Nylon nets is one of the most common and versatile types of netting used. It’s very strong, easy to repair, and is resistant to most chemicals and water. Nylon nets are widely used as commercial fishing for seines, fish farming nets, pound nets, sport nets and so on.