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| Pelegrín, E.; Fraga, I.; Alvarez, S.; Galindo, J.; Jaime Ceballos, B.. |
| Two totally randomized experimental designs were developed under controlled conditions of laboratory during 44 and 32 days, to evaluate the effect of seven diets isocalorics and isolipidics containing 0, 10, 20, 30, 40, 50 and 60% protein levels on growth and survival of bullfrog tadpoles (Rana catesbeiana). There were used animals had an average initial weight of 0.20 ± 0.05 y 0.56 ± 0.25 g. The fastest growths in weight, the metamorphosis ratio and protein efficiency ratio were reached with diet of 20% of protein witch showed significant differences (p<0.05) with the other ones. The feed conversion ratio varied between 1.75 y 11.44 and the best protein efficiency ratio was reached for the animals that attained the bigger growths. It was recommended to... |
| Tipo: Proceedings Paper |
Palavras-chave: Aquaculture; Feeding experiments; Balanced diets; Aquaculture; Http://aims.fao.org/aos/agrovoc/c_550. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1948 |
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| Fraga, I.; Galindo, J.; Jaime, B.. |
| Un diseño experimental completamente aleatorizado se desarrolló, durante 7 semanas, para evaluar el efecto de niveles de inclusión (0, 5, 10 y 15%) de harina de cangrejo (HC) Gecarcinus ruricola, sobre el crecimiento del camarón Litopenaeus schmitti. Los juveniles de camarón (peso medio inicial 0.44 ± 0.02 g), se distribuyeron en recipientes con 40 L de agua de mar a una densidad de 17.8 g/m2. El contenido de metales pesados (Pb, Cd, Cu, Zn) de la HC, dietas y camarones, se determinó por el método de absorción atómica. La calidad proteica de los alimentos experimentales se evaluó por el método del cómputo químico. Las dietas que contenían HC promovieron los más altos crecimientos (P< 0.05). Los juveniles que consumieron alimento con 5% de HC... |
| Tipo: Journal Contribution |
Palavras-chave: Balanced diets; Crab culture; Shrimp culture; Fish meal. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4607 |
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| Reyes, R.; Fraga, I.; Galindo, J.; Ramos, D.. |
| An experiment totally at random in order to know the effect of alfalfa (Medicago sativa) in pink shrimp (Farfantepenaeus notialis) postlarvae was carried out. Initial medium weight was 0.07 ± 0.003 g. Four isoprotein diets with 0; 0.5; 1.0 and 2.0% with different levels of alfalfa meal were tested. Best results in weight gain, protein efficiency and Feed Conversion Factor were obtained with the formula containing highest percentage of this leguminous (2.0%). It was recommended to continue the nutrition studies using this row material as well as to determine its optimum level of addition. |
| Tipo: Proceedings Paper |
Palavras-chave: Shrimp culture; Feeding experiments; Balanced diets; Growth regulators. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1952 |
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| Civera Cerecedo, R.; Villareal, H.; Gaxiola Cortes, G.; Jaime Ceballos, B.; García Galano, T.. |
| En los laboratorios de producción de postlarvas de camarón se suministra, en los estadios de protozoea y mysis, alimento vivo para garantizar buenos resultados en el cultivo sin embargo, el empleo de alimentos artificiales posibilita reducir la costosa dependencia de las algas y los quistes de Artemia ( Wouters et al, 2004). Aunque los resultados alcanzados con diferentes dietas artificiales en el cultivo larval son satisfactorios, aún existe gran preferencia por la utilización del alimento vivo. Sin embargo, en los últimos años con vistas a disminuir los costos de producción, la contaminación y agilizar el proceso productivo, diferentes empresas se han dado a la producción de alimentos artificiales para sustituir parcial (Fegan, 1992) o totalmente el... |
| Tipo: Proceedings Paper |
Palavras-chave: Shrimp culture; Aquaculture; Balanced diets; Algae; Crustacean larvae; Aquaculture. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1913 |
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| Galindo, J.; Fraga, I.; Pelegrín, E.; Regueira, E.. |
| To evaluate the effect of different feeding schedules on growth of white shrimp (Litopenaeus schmitti) juveniles, a totally randomized experimental design was carried out in bottomless pens of 1 m2 in a fertilized earthen pond for 54 days, using 6 treatments and 5 replications. The feeding schedules resulted of different combinations of supplementary foods with 24, 30 y 33% of protein level during the culture, including the schedule used in commercial production in Cuba as control. An “unfed” treatment was included to estimate the contribution of natural food in the growth of shrimps. Treatments that included artificial foods with high protein levels at the end of the schedule promoted higher growths. It was estimated that natural forage contributed... |
| Tipo: Proceedings Paper |
Palavras-chave: Shrimp culture; Diets; Balanced diets. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1953 |
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| Galindo, J.; Fraga, I.; de Arazoza, M.; Fajer, E.; González, R.; Forrellat, A.. |
| The effect of diets with different protein levels on the growth of pink shrimp juveniles Penaeus notialis under laboratory conditions was studied. Animals with initial average weight of 0.4 g were fed during 56 days using four isocaloric (350 kcal/100 g) and isolipidic (8.7 %) balanced diets, containing 30, 35, 40 and 45 % of protein. Shrimp fed with the diet containing 45 % of protein reached the highest growth and the best values for nutritional indixes under evaluation. The protein efficiency tended to increase when the protein level in food also increased. A significant relationship was verified between shrimp weight and in vitro digestibility of diets. No relationship was detected between enzimatic activity of trypsin and general proteases for the... |
| Tipo: Journal Contribution |
Palavras-chave: Balanced diets; Shrimp culture; Feeding experiments. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/1914 |
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