| Revista: | Revista latinoamericana de recursos naturales |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000269111 |
| ISSN: | 1870-0667 |
| Autors: | Casillas Hernández, Ramón1 Nolasco Soria, H2 Lares Villa, F García Galano, T3 Carrillo Farnes, O4 Vega Villasante, F5 |
| Institucions: | 1Instituto Tecnológico de Sonora, Departamento de Ciencias Agronómicas y Veterinarias, Ciudad Obregón, Sonora. México 2Centro de Investigaciones Biológicas del Noroeste S.C., La Paz, Baja California Sur. México 3Universidad de La Habana, Centro de Investigaciones Marinas, La Habana. Cuba 4Universidad de La Habana, Facultad de Biología, La Habana. Cuba 5Universidad de Guadalajara, Puerto Vallarta, Jalisco. México |
| Any: | 2006 |
| Període: | Dic |
| Volum: | 2 |
| Número: | 2 |
| Paginació: | 55-64 |
| País: | México |
| Idioma: | Español |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | Two experiments were carried out to determine the circadian changes of the digestive enzymatic activity (proteases), in different sizes of shrimp culture Litopenaeus vannamei (5, 10, 25 and 30 g), and evaluate the effect of feeding frequencies between: (a) to feed the shrimp two prior hours to the peak of activity enzymatic and (b) to feed during the peak of activity enzymatic. Growth, survival, food conversion rate and ingestion food rate were also evaluated. The experiment was designed and conducted in floating cages. The results shown that the four sizes of shrimp analyzed presented a biphasic circadian rhythm of the protease activity studied, with a period of 12 hours approximately. The first peak of enzyme activity in all sizes appeared at 10:00 hours approximately (diurnal peak) and second to the 20:00 hours (nocturnal peak). The lowest levels of activity enzymatic were present to the 00:00 hours in all sizes studied. The shrimp fed two hours before the enzymatic peak (08:00, 18:00 and 00:00 h), had significantly a greater growth rate, final size, survival and biomass, with regard to shrimps fed during the peaks of enzymatic activity. These results confirm the existence of a synchrony among the feeding activity, the enzymatic variation and the food use. To know the schedules of feeding prior to the peak of enzymatic activity have a prominent application for the semiintensive culture of this specie |
| Disciplines | Biología, Medicina veterinaria y zootecnia |
| Paraules clau: | Crustáceos, Fisiología vegetal, Nutrición animal, Litopenaeus vannamei, Ritmo circadiano, Camarón, Alimentación, Horario de alimentación |
| Keyword: | Biology, Veterinary medicine and animal husbandry, Crustaceans, Plant physiology, Animal nutrition, Litopenaeus vannamei, Circadian rhythm, Shrimp, Feeding, Feeding schedule |
| Text complet: | Texto completo (Ver PDF) |
