Ritmo circadiano de la actividad enzimática digestiva del camarón blanco Litopenaeus vannamei y su efecto en el horario de alimentación



Título del documento: Ritmo circadiano de la actividad enzimática digestiva del camarón blanco Litopenaeus vannamei y su efecto en el horario de alimentación
Revista: Revista latinoamericana de recursos naturales
Base de datos: PERIÓDICA
Número de sistema: 000269111
ISSN: 1870-0667
Autores: 1
2

3
4
5
Instituciones: 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
Año:
Periodo: Dic
Volumen: 2
Número: 2
Paginación: 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
Disciplinas: Biología,
Medicina veterinaria y zootecnia
Palabras clave: 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
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