Long term storage and the compensatory growth of white shrimp Litopenaeus vannamei in aquaculture ponds

• Published in: Latin american journal of aquatic research 2016-07, Vol.44 (3), p.588
• Main Authors: Foes, Geraldo, Krummenauer, Dariano, Lara, Gabriele, Poersch, Luis, Wasielesky, Wilson, Jr
• Format: Article
• Language: Spanish
• ISSN: 0718-560X; 0718-560X
• DOI: 10.3856/vol44-issue3-fulltext-17

Effects of shrimp confinement in a situation of high density stocking in a long term nursery on their growth performance in grow out ponds. Were analized two nurseries with a density of 2000 shrimp [m.sup.-2] were stocked at two different times. The first nursery (LTN) lasted 144 days, and the SGR of the animals was 3.0% [day.sup.-1]. The second nursery (STN) lasted 18 days and the specific growth rate (SGR) was 19.9% [day.sup.-1]. On the same day, shrimps were transferred to six lined ponds at a density of 20 shrimp [m.sup.-2] where they remained for 101 days. In the first biometry, the SGR in the LTN treatment, increased to 6.7% [day.sup.-1] and in the STN it decreased to 5.0% [day.sup.-1]. At the end, shrimps of the LTN and STN treatments reached weights of 8.46 and 6.72 g and had productivities of 1287 and 1015 kg [ha.sup.-1], respectively. Shrimps reared in nurseries for long periods showed growth and survival rates similar to those obtained using conventional management practices in grow out structures. Keywords: Litopenaeus vannamei, culture density, grow-out, long confinement, subtropical shrimp culture. Se analizo el efecto del confinamiento de camarones en una situacion de alta densidad de poblacion en una pre-engorda, sobre su crecimiento a largo plazo en los estanques de engorde. Dos estanques de preengorda con densidad de 2,000 camarones [m.sup.-2] fueron sembrados en dos momentos diferentes. La primera crianza de largo plazo (LTN) duro 144 dias, y la tasa de crecimiento especifico (SGR) de los animales fue 3,0% dia-1. La segunda crianza de corto plazo (STN) duro 18 dias y el SGR fue 19,9% dia-1. En el mismo dia, los camarones fueron trasladados a seis estanques en una densidad de 20 camarones [m.sup.-2], donde permanecieron durante 101 dias. En la primera biometria, la SGR en el tratamiento LTN aumento a 6,7% dia-1 y STN disminuyo a 5,0% dia-1. Al final, los camarones de los tratamientos LTN y STN llegaron a 8,46 y 6,72 g con productividad de 1.287 y 1.015 kg [ha.sup.-1], respectivamente. Los camarones cultivados en pre-engorda durante largos periodos presentaron crecimiento y supervivencia similares a los obtenidos mediante practicas de manejo convencionales en los estanques de engorda. Palabras clave: Litopenaeus vannamei, densidad de cultivo, engorde, confinamiento prolongado, acuicultura subtropical.