Polyculture of Nile tilapia and shrimp at different stocking densities

Ambrosio Paula Bessa Junior, Celicina Maria da Silveira Borges Azevedo, Frederico Silva Thé Pontes, Gustavo Gonzaga Henry-Silva
2012 Revista Brasileira de Zootecnia  
An experiment was conducted to compare the performances of different carps i.e. rohu (Labeo rohita), catla (Catla catla), mrigal (Cirrhinus cirrhosus) and silver carp (Hypophthalmicthys molitrix) in different stocking densities of polyculture. Three treatments each with three replicates were maintained and the stocking densities of carps were 40, 80 and 160 per decimal in T , T and T respectively. The ratio of 1 2 3 stocking for rohu, catla, mrigal and silver carp was 2:3:2:1. Ponds were
more » ... . Ponds were fertilized regularly, commercial feed was given for first 10 days; the mixture of rice bran and wheat bran was given for 80 days as supplemental feed. The water quality parameter such as pH, temperature, dissolved oxygen and transparency were observed fortnightly. The obtained results showed that the highest weight was gained at 176.33±15.76 g in treatments T by silver carp, followed by mrigal (106.79±14.23 g), catla (73.5±32.80 g) and rohu (52.71±6.03 g). Similarly, the 1 highest length was obtained in treatment T by rohu at 13.07±0.59 cm followed by catla at 13.4±2.1 cm, mrigal 2
doi:10.1590/s1516-35982012000700002 fatcat:qq7iwojkojch3hvt446hinxlge