Monday, November 10, 2008

Integrated Fish Farming

Integrated fish farming is the methods by which fish is cultured along with paddy, piggery, poultry or any livestock, or flower culture.

Fish farming along with paddy culture:

In certain areas, paddy fields are flooded with water for at least 3-8months in a year. During which the fishes or prawns can be cultured along with the paddy fields to increase the annual income of a farmer. Fish culture in paddy fields can be categorised by following ways –

1. The water is allowed to enter into the paddy fields during cultivation with some wild verities. The paddy fields are surrounded to prevent the escape. No special attention is taken for that. This is a type extensive culture.
2. The paddy fields can be used as temporary ponds after harvesting of paddy. In this method fish and paddy is not cultured together. Fish seeds of suitable species are stocked with minimum care.
3. A continuous fish culture is done in specially prepared ditches or canals when fields are drained.

Advantages:

· The excretory matter of fish is used as manure for paddy cultivation
· Insects which can harm paddy crops are eaten by the fishes
· Fish destroy the unwanted weeds and increased the production of paddy.

Generally in WB, Rohu, Catla, Mrigal and all air breathing fishes are cultured along with paddy. Fresh water prawns, Tilapia and other cyprinids are also cultured.

Fish farming along with Duckery or Poultry:

Fish can be cultured along with livestock. The system is advantageous because duck feeds miscellaneous items from water like insects, crustaceans, molluscs which are not economical. The duck droplling is used as foods as well as fertilisers of ponds. The dabbling of duck in pond water in search of feeds release the nutrients from soil as well as it mixes the oxygen to the water which enhances the biological productivity and consequent increase of fish growth. The duck does not need any elaborate house and most of the time they prefer to live in water. Improve stocks of ducks like – India Runners, are used in poly culture system. 200 – 300 ducks are culture along with fish which can make sufficient amount of fertiliser to the pond water. The culture can yield from one ha area – 3,500-4000kg of fish, 18,000 eggs and 500kg of duck meat in one year.

Fish cum Pig Farming:

Fish farming with pig rearing is also cost effective and extra source of income to the fish farmers. Four types of pigs are used in that case in India of which Hampshire and Land Race are mostly cultured. They are prolific breeders and attain slaughter house maturity (60-70kg) with in 6 months and give 6-8 piglets. Fish attains marketable size in a year during which two crops of pigs can be reared. Pig manure is also rich with all nutrients found in cow dung. Fully grown pigs can void 500-600kg manure in a year. 30 – 40 pigs are sufficient to one ha farm for adequate fertilisation.

The yield is about from poly culture system –

6000 – 7000kg fish/ha/yr with 3,600 – 5000kg of pig meat

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