Efeito da associação de cinco probióticos e dois aminoácidos essenciais e a forma de aplicação no desempenho do camarão-da-Amazônia (Macrobrachium amazonicum)

Abstract

The Amazon river prawn, Macrobrachium amazonicum, has a great geographical distribution, has great economic and ecological importance in several regions of the country, besides being a species of native species with greater potential for cultivation. The objective of this work was to evaluate and aggravate the problem in weight gain, total length, survival and apparent feed conversion in Amazonian shrimp in a closed water recirculation system (RAS). The experiment was carried out in the Aquaculture Plant Culture Laboratory, located in the Sector of Fishing Engineering Course of the Federal University of Bahia Recôncavo. The animals were not experienced in the Paraguaçu/BA river, in Geolândia/BA and in four treatments: SP = without probiotic, PA = probiotic in water, PR = probiotic in ration and PRA = probiotic in ration and waterer and four replications, in a completely randomized design (DIC). Two initial biometrics were performed every 15 days, totaling nine biometrics, to evaluate the effect of commercial probiotic height in relation to weight gain, total length, survival and apparent feed conversion during the 120 days period. Cameroon with initial mean weight of 0.47 ± 0.094 total length 40.44 ± 3.28 mm were mechanically and biologically mechanized at the density of 0.2 shrimp / L and fed at twice- daily frequency (08:00 and 16:00 in the amount of 12% of the PV. Monitoring and monitoring of pH were monitored daily, ammonia, nitrite and pH were monitored every three days. An analysis of variance and a comparison of the means with the Tukey's test at 5% of significance were analyzed. The results showed that weight gain provided a gain greater than 5.63 g (p <0.05), which gave a total amplitude of 83.32 and 75.10 mm (p <0.05). The treatment PRA provided an apparent feed conversion ratio of 1.91. Surveillance averages did not differ statistically between treatments, with a mean value of 71%. Thus, it can be concluded that the use of probiotic increases survival, gain and weight and total duration, as well as improving the apparent feed conversion for Amazon shrimp in water recirculation systems.