Agonistic interactions and zootechnical performance in Macrobrachium rosenbergii Culture in Cages
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.006.0029Keywords:
Carciniculture, Malayan Shrimp, Stocking, Net Tank, LesionsAbstract
To evaluate identify injuries of agonistic interactions the animal and performance of Macrobrachium rosenbergii juveniles (5,39 ± 2,13 g) in different densities, they were subjected to cultures in cages, fed with balanced ration (35% crude protein) at 7 am and at 2 pm, at 10% of their biomass, for 70 days. 5 treatments were applied with 5 replications each: D5 - 5 animals/m2; D10 - 10 animals/m2; D15 - 15 animals/m2; D20 - 20 animals/m2; D25 - 25 animals/m2. To this, were distributed 25 cages randomly in two masonry nurseries. To determine the performance parameters, some samples were taken every 10 days. The remnants in the tray were removed after 2h of permanence to calculate intake. The end of the experiment the lesions were verified and quantified. The treatments were analyzed using the STATISTIC 7.0 (2004) program. The densities D5 and D10 had higher average final weight, weight gain, specific growth rate, feed efficiency, survival, daily consumption, the morning daily consumption and evening daily consumption. The population of 10 shrimp/m² offers optimal performance in cage density and the amount of injuries increased with increasing stocking density.
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