|
|
|
| Registros recuperados: 23 | |
|
|
| Blanco, W.; Fraga, I.; Tizol, R.; Artiles, M.A.. |
| Two experiments were accomplished with wild P. argus lobster postlarvae collected from the sea in pelagic collectors. In the first one, the effect of two foods (live and frozen Artemia) was tested on 0.17 g lobsters in a 40 days feeding trial. Significant differences were found (p<0.05) between the final weight, survival, weight increment, molting rate and NBI, the highest values were for live Artemia with the highest survival (93%). Mortalities using frozen Artemia were almost entirely attributable to cannibalism of postmoult lobsters. In the second experiment, the average initial weight was 0.26 g during 120 days and three densities (50, 70, 90 n/m2) were tested, the feeding regimes were live Artemia and pellet during 60 days the rest of time with... |
| Tipo: Proceedings Paper |
Palavras-chave: Feeding experiments; Lobster culture. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/2079 |
| |
|
| |
|
|
| Galindo, J.; Fraga, I.; Artiles, M.A.; de Arazoza, M.; Alvarez, J.S.; Pelegrín, E.. |
| To assess the effect of protein levels in diet on growth of pink shrimp juveniles (Farfantepenaeus notialis), two completely randomly experimental designs were carried out, one at laboratory scale during 8 weeks and the second one in fertilized earthen ponds during 20 weeks. Samples of pink shrimps obtained after spawning in the laboratory, were used. Isocaloric practical diets containing 35, 40 and 45% were used in the first experiment and 40 and 45% protein in the second one. In both trials, shrimps fed with 45% protein diet reached the highest growths. The nutritional factors assessed were always better in that organisms fed with the diet of higher protein content. The histological analysis of the hepatopancreas in shrimp feds with diets containing... |
| Tipo: Proceedings Paper |
Palavras-chave: Shrimp culture; Feeding experiments; Histology. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1951 |
| |
|
|
| Alvarez, J.S.; Hernandez-Llamas, A.; Galindo, J.; Fraga, I.; Garcia, T.; Villareal, H.. |
| The feasibility of substituting soybean meal for ¢shmeal diets for juvenile white shrimp Litopenaeus schmitti (0.35 0.01g) was evaluated, and an adequate substitution level was determined. Five diets were evaluated using 46%, 59%, 75%, 88% and 100% substitution levels. Pellet water stability was signi¢cantly a¡ected by dietary soybean content (Po0.05). Increased soybean content produced lower pellet stability, ranging from a dry matter loss of 14^ 22% after a 2-h immersion, and 20^33% after an 8-h immersion. After 52 days, signi¢cant di¡erences (Po0.05) were found in shrimp weight, feed conversion ratio and protein e⁄ciency ratio. The values were 0.64^1.06 g, 2.8^7.9 and 0.45^1.21, respectively, for the three measurements. Overall, better results were... |
| Tipo: Journal Contribution |
Palavras-chave: Shrimp culture; Nutrition; Nutrition; Http://aims.fao.org/aos/agrovoc/c_49892. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/2618 |
| |
|
|
| 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 alcanzaron... |
| Tipo: Journal Contribution |
Palavras-chave: Diets; Shrimp culture. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3643 |
| |
|
| |
|
| |
|
| |
|
|
| Fraga, I.; Jaime, B.. |
| Un diseño experimental completamente aleatorizado, con cuatro tratamientos y tres réplicas por cada uno, se desarrolló en condiciones controladas durante nueve semanas para evaluar el efecto de la harina de hollejo para pectina (HPP) en la dieta sobre el engorde del camarón rosado Farfantepenaeus notialis (0,45 ± 0,13 g) procedente del medio natural. Los organismos se distribuyeron aleatoriamente a razón de 83,3 g/m2, en 12 tanques plásticos rectangulares (65 x 40 x 27 cm) con aireación constante y circulación de agua de mar filtrada. Se ensayaron alimentos con 0; 5; 10 y 15 % de inclusión de HPP. Niveles de inclusión de 5 y 10 % de HPP en el granulado estimularon significativamente el crecimiento de los camarones y la conversión del alimento (p < 0,05)... |
| Tipo: Journal Contribution |
Palavras-chave: Diets; Shrimp culture. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4650 |
| |
|
|
| Blanco, W.; Fraga, I.. |
| Two experiments were accomplished in (P. argus) lobster juveniles, for evaluate unilateral and bilateral eyestalk ablation. First one with initial weight 120 g the juveniles reach (237 g and 146 g) in 180 days, survivals (75% and 72%), NBI (50.4 and 27), growth rates (0.731 g/day and 0.231 g/day), SGR (0.47%/day and 0.16%/day) respectively; significant differences were found between unilateral and bilateral ablation on final weights, SGR and NBI. On a second experiment, using unilateral ablation with initial weight of 30 g the juveniles reach 130 g in 154 days, survival 66.6%, NBI 58.7, growth rate 0.651 g/day and SGR 0.95%/day. Significant differences appear between final weight, SGR, and NBI with control. The unilateral ablation shows the best records... |
| Tipo: Proceedings Paper |
Palavras-chave: Lobster culture; Animal growth. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/2075 |
| |
|
|
| Díaz, V.; Fraga, I.; Fraga, R.; González, M.; Pérez, O.; Escobar, A.; Contreras, R.; Morales, N.. |
| The effects of artificial diets were studied with different store times, between 1 week and 6.5 months in juveniles culture shrimps in fattening phase. The artificial diets were stored at environmental temperature. The quality of raw materials and finished products were controlled during the storage time with physical, chemical, organoleptical and entomological analysis also it was evaluated the growth, protein efficiency, the food conversion factor and the survival of the shrimps. The nutriments affected during storage were the proteins, lipids and the % of free fatty acids, due fundamentally to the contamination with acarids and insects. It was found that the growth and protein efficiency of juveniles shrimps decreased with the age of the feed, without... |
| Tipo: Proceedings Paper |
Palavras-chave: Shrimp culture; Artificial feeding. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/2076 |
| |
|
|
| Fraga, I.; Galindo, J.; de Arazoza, M.; Blanco, W.; Díaz-Iglesias, E.; Báez, M.; Bravet, E.. |
| Para evaluar el efecto de diferentes relaciones proteína/energía en el crecimiento de juveniles de langosta Panulirus argus (peso medio inicial de 180 ± 3.8 g), se desarrolló un diseño experimental totalmente aleatorizado durante 5 meses, con 7 tratamientos y 16 repeticiones. Se ensayaron dietas con 25, 35 y 45% de proteína, con niveles altos y bajos de energía (324-359 Kcal/100 g) y relaciones proteína/energía entre 70.5 y 137.2 mg de proteína/Kcal. Al final del bioensayo se determinaron los indicadores nutricionales básicos y se comparó el flujo energético producido en la respiración y excreción nitrogenada entre langostas alimentadas con las dietas isocalóricas (356 Kcal/100 g) de 25 y 45% de proteína. Se concluyó que las langostas requieren para crecer... |
| Tipo: Proceedings Paper |
Palavras-chave: Juveniles; Feeding experiments; Animal growth; Proteins; Lobster culture; Juveniles; Proteins; Http://aims.fao.org/aos/agrovoc/c_25393; Http://aims.fao.org/aos/agrovoc/c_6259. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/1879 |
| |
|
|
| 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 |
| |
|
|
| Galindo, J.; Fraga, I.; de Arazoza, M.; Alvarez, S.; Ramos, D.; González, R.. |
| Con el objetivo de determinar el efecto de diferentes relaciones proteína/energía (P/E), sobre el crecimiento de juveniles de Camarón Blanco Litopenaeus schmitti , mediante la utilización de dietas prácticas, se desarrolló un diseño experimental completamente aleatorizado, a escala de laboratorio, durante 59 días. Se evaluaron 12 dietas con diferentes niveles de inclusión de proteínas, lípidos y carbohidratos. El crecimiento fue mayor en los camarones que se alimentaron con las dietas que contenían 33 y 28% de proteína, alcanzando su valor máximo en el intervalo de la relación P/E comprendido entre 105-127 mg de proteína/Kcal. Los indicadores nutricionales evaluados, también fueron mejores para aquellos organismos alimentados con las dietas de alto... |
| Tipo: Proceedings Paper |
Palavras-chave: Nutritional requirements; Prawn culture; Diets; Animal growth; Juveniles; Nutritional requirements; Juveniles; Http://aims.fao.org/aos/agrovoc/c_5277; Http://aims.fao.org/aos/agrovoc/c_25393. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/1880 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| Galindo, J.; Barbarito, J.; Fraga, I.; Alvarez, J.S.. |
| Se evaluó el efecto de la zeolita como aditivo en el alimento de postlarvas y juveniles de camarón blanco Litopenaeus schmitti (0.8 ± 0.02 mg y 2.35 ± 0.1 g de peso inicial promedio respectivamente). Los bioensayos tuvieron una duración entre 30–50 días y se ensayaron alimentos balanceados elaborados a base de materias primas convencionales con diferentes niveles de inclusión de zeolita. Los niveles de zeolita ensayados no afectaron la supervivencia de las postlarvas y juveniles. Las postlarvas que consumieron la dieta con 1% de zeolita alcanzaron los mayores crecimientos (p<0.05). La inclusión de este ingrediente mejoró significativamente el factor de conversión del alimento en ambos grupos experimentales. La relación entre el nivel de inclusión de... |
| Tipo: Journal Contribution |
Palavras-chave: Zeolites; Shrimp culture; Zeolites; Http://aims.fao.org/aos/agrovoc/c_15928. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/2619 |
| |
|
|
| Balsinde, M.; Fraga, I.; Galindo, J.. |
| The artificial feeds elaboration for aquatic species, it has always used as conventional technology of pelletized prosecution. The artificial balanced feeds production for the commercial breeding of the shrimp constitutes the base of the feeding of most of the cultures of aquatic species in Cuba. In this work three diets were elaborated by the extrusion technology substituting flour of having fished by silage, according to the nutritional requirements recommended for the white shrimp (Litopenaeus schmitti) the used inclusion percents were the following ones: (Diet I = 16%, Diet II = 20.5% and Diet III = 27%). starting from the nutritional answer of the animals that was evaluated by the parameters Factor of Conversion of the Food (FCA) and Gain in Weight of... |
| Tipo: Proceedings Paper |
Palavras-chave: Fish silage; Shrimp culture. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/2078 |
| |
| Registros recuperados: 23 | |
|
|
|
