Efeito da adi o do mela o na rela o carbono/nitrog那nio no cultivo de camar o Litopenaeus vannamei na fase ber 芍rio = Effect of molasses addition on carbon/nitrogen ratio in the nursery phase of Litopenaeus vannamei shrimp culture

作者：Ugo Lima Silva; Fabiana Penalva de Melo; Roberta Borda Soares; Diogo Bessa Neves Spanghero

来源：Acta Scientiarum - Biological Sciences, 2009.

• mela o
• rela o C:N
• crescimento
• Litopenaeus vannamei
• molasses
• C:N ratio
• growth
• Litopenaeus vannamei

Investigou-se o efeito da adi o do mela o nas rela es carbono:nitrog那nio (C:N) sobre o desempenho zoot谷cnico do camar o Litopenaeus vannamei, na fase ber 芍rio, quando cultivado sem renova o de 芍gua. As rela es do C:N foram avaliadas nas propor es de 25:1 (25M), 15:1 (15M) e o controle (0M), sem aplica o de carbono, em delineamento experimental inteiramente casualizado, com quatro repeti es. P車s-larvas (PL) com peso inicial de 2,5 ㊣ 0,5 mg, foram estocadas em 12 tanques (800 L volume 迆til), em densidades de 6,25 PL L-1, durante 42 dias de cultivo. Ao final do cultivo, os pesos finais dos camar es dos tratamentos 25M (532,0 mg) e 15M (540,0 mg) foram superiores (p %26lt; 0,05) aos do tratamento 0M (428,6 mg). A sobreviv那ncia dos camar es foi satisfat車ria em todos os tratamentos (77,9 a 90,0%), mas n o houve diferen a significativa (p ≡ 0,05) entre os mesmos. Desta forma, conclui-se que as rela es C:N de 15 e 25:1 s o mais eficientes ao propiciarem melhor desempenho no crescimento das p車s-larvas de L. vannamei cultivadas na fase ber 芍rio sem renova o de 芍gua. The effect of molasses addiction on carbon:nitrogen ratios (C:N) on the performance of Litopenaeus vannamei shrimp during the nursery phase cultured without water exchange was investigated. The C:N ratios were evaluated in 25:1 (25M) and 15:1 (15M) proportion and a control (0M), with no carbon source addition, in a randomized experimental design with four replicates. Post-larvae (PL) with initial weight of 2.5 ㊣ 0.5 mg were stocked in 12 tanks (800 L net volume), at the density of 6.25 PL L-1 during 42 culture days. At the end of culture, the shrimps weights on 25M (532.0 mg) and 15M (540.0 mg) treatments were higher (p %26lt; 0.05) than the 0M (428.6 mg) treatment. Shrimp survival was high in all treatments (77.9 to 90.0%), but without significant difference (p ≡ 0.05). Therefore, the 15 and 25:1 C:N ratios showed an increased growth performance of nursery phase L. vannamei post-larvae cultured without water exchange.