Utilização de macroalgas marinhas arribadas em dietas para o camarão Litopenaeus vannamei (Boone,1931)

• Autor(a) principal: SILVA, Robson Liberal da
• Data de Publicação: 2005
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
• Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6455
• topic: Macroalga marinha; Litopenaeus vannamei; Camarão marinho; Nutrição animal; CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA

The landed macroseaweed use in diets for shrimp is pioneering, in Brazil. Four a thousand works had been searched more than, in its great majority in international magazines and journal. About 40 if they related to the macroseaweed use for feeding of aquatic organisms. To evaluate the diets to the base of these seaweed two intitled experiments had been carried through: Effect of diets to the base landed macroseaweed in the growth and survival of the marine shrimp Litopenaeus vannamei (Boone, 1931) and Digestibilidade of experimental rations to the landed macroseaweed base as diet of the marine shrimp Litopenaeus vannamei (Boone, 1931). With intention to verify the alimentary conversion, survival and the growth, in the first experiment four diets had been tested (five rejoinders, each one), with 30% of rude protein (isoprotéica) and 300Kcal/100g (isocalóricas), a diet have controlled without macroseaweed (ration D) and three contend 13% (ration C), 26% (ration B) and 39% (ration A) of macroseaweed, of the species Hypnea cervicornis e Cryptonemia crenulata, in a period of 45 days. In the other experiment they had verified it digestibility, hidroestability and the costs ofproduction of the four diets. For the studies of the digestibilidade 300 shrimps had been fed (8% of the biomass), per 10 days, with average weight of 0,68g. The loss of the dry matter (PMS) was evaluated in the times of immersion in water of 30, 60, 90, 120 and 240 minutes. The values of biomass profit, tax of specific growth (SGR) and survival had comparativily not presented significant differences (P>0,05). The alimentary conversion varied between 1,79 and 2,08, presenting significant differences between the treatments, however similar in the rations and the A and B; C and D (P=0,05). The apparent digestibility of the dry matter for the four diets had varied of 73,12%±8,08 77,52%±8,73, not having estatisticamente significant difference (P>0,05). The rations A and the B had been the ones that had presented minors costs. Ration B was the one that presented the best ones resulted of hidroestability.