79 research outputs found
The relationships between charnockites and associated granitoids of Ribeira Belt : their ages and origins
Efecto de la presencia de flóculos sobre el crecimiento en juveniles de camarones blancos del pacifico litopenaeus vannamei en sistemas intensivos en condiciones experimentales
To determine the effect of the floc on the growth of juvenile shrimp Litopenaeus vannamei in intensive systems under experimental conditions. Materials and methods. To determine which treatment reached the highest, physical and chemical factors were measured: dissolved oxygen and temperature; and population parameters Accumulated Growth, Survival and Feed Conversion Factor. Collecting these data for 25 days where the Litopenaeus vannamei shrimp had an initial weight of 1.8 gr in both treatments. Results. According to the results obtained in the experiment, the commercial feed + floc treatment obtained a final growth of 5.35, on the other hand, the treatment with only commercial feed reached 4.9 gr. Conclution. The commercial feed + floc treatment gained larger size and biomass in less time because the floc application managed to provide more nutrients to the applied diet and in this way the shrimp took advantage of this supply, this natural food being the primary food source. while in the treatment without floc, lower biomass was obtained since no substitute was added to this treatment, only commercial feed, when performing the statistical analyzes it was found that p<0.05, which indicates that there was a significant difference, substantiating that with the use of floc growth of shrimp Litopenaeus vannamei is higher.
Determinar el efecto el flóculo sobre el crecimiento en juveniles de camarones juveniles Litopenaeus vannamei en sistemas intensivos en condiciones experimentales. Materiales y métodos.Para determinar cuál tratamiento alcanzó un mayor se midieron factores físicos y químicos: Oxígeno disuelto y Temperatura; y parámetros poblacionales Crecimiento acumulado, Sobrevivencia y Factor de Conversión Alimenticia. Recolectando estos datos durante 25 dias donde los camarones Litopenaeus vannamei tuvieron un peso inicial de 1.8 gr en ambos tratamientos. Resultados. Según los resultados obtenidos en el experimento, el tratamiento de alimento comercia + flóculo obtuvo un crecimiento final de 5.35 por otro lado el tratamiento solamente con alimento comercial alcanzó 4.9 gr. Conclusión. El tratamiento de alimento comercial + flóculo gano mayor tamaño y biomasa en menor tiempo debido a que la aplicación de flóculo logró aportar más nutrientes a la dieta aplicada y de esta forma los camarones aprovecharon este suministro siendo este alimento natural el primordial como fuente de alimentación, mientras que en el tratamiento sin flóculo se obtuvo menor biomasa ya a que este tratamiento no se le agrego ningún suplente solamente alimento comercial, al realizar los análisis estadísticos se encontró que p<0.05 lo que indica que hubo diferencia significativa fundamentando que con el uso de flóculos el crecimiento de los camarones Litopenaeus vannamei es mayor
Exposição ao ruído tecnológico em cti: estratégias coletivas de defesa dos trabalhadores de enfermagem
The medicine selection process in four large university hospitals in Brazil: Does the DTC have a role?
Repercussões da violência na saúde mental de trabalhadores do Programa Saúde da Família
Genetic structure of natural Eugenia dysenterica DC (Myrtaceae) populations in northeastern Goiás, Brazil, accessed by morphological traits and RAPD markers
Assistência humanizada em UTI neonatal: os sentidos e as limitações identificadas pelos profissionais de saúde
Building up of a nested granite intrusion: magnetic fabric, gravity modelling and fluid inclusion planes studies in Santa Eulália Plutonic Complex (Ossa Morena Zone, Portugal)
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