Feasibility study on semi intensive polyculture of chainess and Indian carps in I.R.IRAN (Khozestan province)

In order to diversify the production of carp (Cyprinid) in Iran, in 2010 September, 15,000 pieces of fry from three species of indian major carp were arrived to Iran. After subtraction of the dead fishes, finally 10,500 fry were introduced to 700 m2 ponds with a density 3,500 pieces, which includes 46. 7 % Catla, (Catla catla), 35 % Rohu (Labeo rohita) and 18. 3% Mrigal Mrigal (Cirrhinus mrigala). Primary average weight and length of these fishes were 0.3±0.0 g and 23.6±0.75 mm for Rohu, 0.1±0.0 g and 33.26±0.35 for catla and 0.16±0.01 g and 34.8±0.96 mm in Mrigal respectively. Fish were reared in the Khuzestan province's climate with at least 7°C and a maximum temperature of 35°C. The culture period was 6 month. Once every 45 days by using signebeach net samples were taken from ponds and biometry tests were done. The maximum net production was observed at 50% situated treatment, with average weight 723.3 kg per 1700 m^2 ponds (4254.9 kg ha). There is no significant differences between experimental treatments with each other and with control (P <0. 05). Mean final weight of Rohu in 3 experimental treatments were 1136, 1129, 1054 g and in Catla and Mrigal were 726,902, 839 g and 773, 788, 894. There was not significant diference between them (P<0.05). Survival rate in Rohu, Catla and Mrigal was 92%, 97% and 86% respectively. The maximum specific growth rate (SGR) of fish related to Catla (1.92) and the minimum SGR of fish was observed in Mrigal (1.45). In accordance with the results of this study, the Indian carp fishes can able to adapt, grow and reach to market weight in the Khuzestan province's weather conditions.

Bibliographic Details

Main Authors:	Mortezavizadeh, Seyed Abdolsaheb, Maramazi, J., Hoseinzadeh, H., Moazedi, J., Basakkahkesh, F., Amiri, F., Nicpay, M., Edizadeh, M.R., Hoshmand, H., Kiyanersi, F., Banitarfizadegan, J.
Format:	monograph biblioteca
Language:	Persian
Published:	Iranian Fisheries Science Research Institute 2013
Subjects:	Aquaculture, Iran, Khuzestan province, Indian carp, SGR, Labeo Rohita, Cirhinus merigala, Catla catla, Chainess crap, Cyprinid, Species, Temperature, Survival rate,
Online Access:	http://hdl.handle.net/1834/39817
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