Author: ROBERTO CIVERA CERECEDO

Uso del aceite de langostilla como enriquecedor de rotífros. Efectos sobre el crecimiento y la sobrevivencia de larvas de cabrilla (Paralabrax maculatofasciatus).

CARLOS JUVENTINO CACERES MARTINEZ ROBERTO CIVERA CERECEDO (1999)

"Actualmente se desarrolla a escala piloto la pesquería de la langostilla (Pleuroncodes planipes) organismo que se procesa para obtener dos derivados: harina y aceite, ambos dirigidos a la industria de fabricación de alimentos balanceados. El aceite contiene una gran cantidad de pigmentos y posee un alto contenido de ácidos grasos poliinsaturados, particularidades que lo hacen atractivo como enriquecedor de alimento vivo para el cultivo larvario de peces. En este trabajo se comparó el crecimiento y la sobrevivencia de larvas de cabrilla (Paralabrax maculatofasciatus) sometidas a 2 tratamientos de alimentación: 1) alimentadas con rotíferos Brachionus plicatilis (Müller) enriquecidos con aceite de calamar, 2) alimentadas con rotíferos enriquecidos con aceite de langostilla, y un control consistente en larvas alimentadas con rotíferos sin enriquecer. Cada uno de los tratamientos fue evaluado por triplicado durante 21 días. Las larvas fueron alimentadas una vez al día a partir de las 24 h después de la eclosión, a razón de 5 rotíferos/ml. Las larvas sometidas al tratamiento con aceite de langostilla presentaron el mayor incremento en longitud y la mejor sobrevivencia, sin embargo, no se detectaron diferencias significativas entre los tratamientos (p>0.05). Los resultados indican que el uso del aceite de langostilla como enriquecedor de presas vivas para la cabrilla es viable, ya que permite obtener respuestas al menos iguales a las obtenidas con el aceite de calamar, a nivel de crecimiento en talla y sobrevivencia. Sin embargo, será necesario realizar más ensayos para optimizar el método de enriquecimiento, conocer los efectos sobre la composición lipídica y en pigmentos de las presas y de las larvas, y poder determinar con mayor precisión el valor nutricio del aceite de langostilla para el cultivo larvario de la cabrilla arenera y otras especies. "

"The use of oils of marine origin far the lipid enrichment of live preys such as rotifers and Artemia is a common practice in marine larviculture. Fish and squid oils are widely used for this purpose, because of their content in highly-unsaturated fatty acids. In Mexico there is a very abundant crustacean known as pelagic red crab (Pleuroncodes planipes) whose pilot fishery is being developed to obtain two main products: meal and oil. The oil is rich in highty-unsaturated fatty acids and pigments. In order to determine the nutritional value of the red crab oil as a source of lipids, we compared the growth and survival rates of spotted sea bass (Paralabrax maculatofasciatus) larvae under 2 feeding treatments using rotifers Brachionus plicatilis: 1) rotifers enriched with squid oil, 2) rotifers enriched with red crab oil and a control consisting on rotifers without enrichement. The feeding treatments were evaluated with three replicates for 21 days. The larvae were fed ad libitum once a day alter hatching with a prey density of 5 rotifer/ml. Larvae fed on crab.oil enriched rotifers showed the highest length increase and survival, nevertheless, no significant differences between treatments were detected (p>0.05). Our results indicate that red crab oil can be used as a source of lipids, via rotifers, far spotted sea bass larvae, since it allows to obtain similar performances to those obtained with the squid oil, in terms of growth in lenght and survival."

Article

Peces marinos, crianza larvaria, rotíferos, enriquecimiento, lípidos. Fish rearing, nutritional quality, fatty acids. CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PECES Y FAUNA SILVESTRE PISCICULTURA

Uso de la harina de Spirulina platensis como atrayente en el alimento para el camarón Litopenaeus schmitti

Use of Spirulina platensis meal as feed attractant in diets for shrimp Litopenaeus schmitti

Barbarito Jesús Jaime Ceballos ROBERTO CIVERA CERECEDO Humberto Villarreal Colmenares JOSE MANUEL GALINDO LOPEZ (2007)

"Con el objetivo de conocer el poder atrayente de la harina de Spirulina platensis como aditivo en la alimentación de Litopenaeus schmitti, se realizó un experimento en el laboratorio húmedo del Centro de Investigaciones Pesqueras, La Habana, Cuba, con un diseño totalmente aleatorizado (4 tratamientos con 6 repeticiones) donde se ensayaron 2 alimentos: uno con 5% de Spirulina platensis, y un control sin la microalga, y dos posiciones del alimento dentro de un dispositivo experimental consistente en un acuario rectangular al que se le colocaron dos divisiones de vidrio, que permitieron que el acuario quedara dividido en tres compartimentos iguales. Diez camarones con una masa promedio de 0.503 ± 0.018 g se colocaron en la sección central, con acceso a los otros dos compartimentos del acuario, en los cuales se situaron los alimentos experimentales. Un análisis bifactorial mostró que el tipo de alimento influyó significativamente en la atracción y que la posición no tuvo efecto significativo alguno, aunque hubo interacción entre los factores. El mayor porcentaje de camarones (68%) se desplazó a la posición donde se encontraba el alimento con inclusión de harina de Spirulina platensis y lo ingirió. Se concluye que la adición de 5% de harina de Spirulina platensis mejora la atractabilidad del alimento para Litopenaeus schmitti."

"An experiment was conducted at the wet laboratory of the Fisheries Research Centre, Havana, Cuba, to evaluate the attractability of a pelleted diet containing Spirulina platensis meal for Litopenaeus schmitii juvenile. The design was completely randomized with 4 treatments and 6 repetitions. Two diets: a diet containing 5% of Spirulina platensis meal and a control diet without it, and two positions of the feed were assayed inside an experimental device consisting in a rectangular glass aquarium in which two internal glass walls were placed in order to have three equal sections. Ten shrimps with mean weight of 0.503 ± 0.018 g were placed in the central section of the aquarium, with access to the other two sections, where the experimental diets were placed. A bifactorial analysis showed that the attraction was significatly affected by type of feed, although the position did not have any significant effect. A greater percentage of shrimp (68%) moved toward the position where the diet containing Spirulina platensis meal was placed, and ingested the diet. It is concluded that the inclusion of 5% of Spirulina platensis meal improved the attractability of the feed for Litopenaeus schmitti."

Article

Spirulina platensis, atrayente, camarón, Litopenaeus schmitti. Spirulina platensis meal, attractant, shrimp, Litopenaeus schmitti. BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) ZOOLOGÍA MARINA ZOOLOGÍA MARINA

Efecto de la temperatura y la densidad de cultivo sobre el crecimiento de juveniles de la cabrilla arenera, Paralabrax maculatofasciatus

Effect of temperature and density on growth of spotted sand bass Paralabrax maculatofasciatus juveniles reared in the laboratory

Benjamín H. Anguas Vélez ROBERTO CIVERA CERECEDO ERNESTO GOYTORTUA BORES SONIA GUADALUPE ROCHA MEZA (2003)

"Se realizó un experimento de crecimiento con el objetivo de determinar la temperatura y densidad más apropiadas para el cultivo en laboratorio de juveniles de cabrilla arenera Paralabrax maculatofasciatus. Para ello, se implementó un diseño factorial de 3 X 2 con 3 réplicas por tratamiento, en el que se probaron tres temperaturas (24, 27 y 30°C) y dos densidades (266 y 400 peces/m3 ). Organismos de 2.1 g se alimentaron con una dieta semihúmeda (56% Proteína y 23% Lípidos) durante 40 días en acuarios con 30 L de agua de mar. No hubo ningún efecto por la temperatura o la densidad sobre la supervivencia. El mayor crecimiento fue observado a 27°C con 400 peces/m3 , mientras que los peces sometidos a 24°C y 400 peces/m3 y 30°C y 400 peces/m3 mostraron crecimientos más bajos. El porcentaje del consumo aparente de alimento diario por peso promedio del pez (%CAAD) solo fue significativamente diferente (P<0.05) entre las dos densidades de la temperatura intermedia (27°C), pero no en los grupos de la temperatura baja (24°C), ni de la alta (30°C). De manera similar al %CAAD, únicamente los valores del factor de conversión alimenticia de las dos densidades de las temperaturas de 24°C (3.8 y 2.7) y 27°C (3.4 y 2.0) fueron significativamente diferentes entre sí. Se concluye que la temperatura de 27°C y la densidad de 400 peces/m3 (equivalente a 0.84 g/L de biomasa inicial) son las condiciones más apropiadas para el crecimiento de juveniles de cabrilla arenera cultivados en laboratorio."

"A growth trial was conducted to determine the most appropriate temperature and fish density for rearing juvenile spotted sand bass Paralabrax maculatofasciatus under laboratory conditions. The experiment followed a 3 X 2 factorial design with three temperatures (24, 27, and 30°C) and two densities (266 and 400 fish/m3 ), with three replicates per treatment. Juveniles (mean weight 2.1 g) were fed a semi-moist diet (56% protein and 23% lipids) for 40 days, residing in tanks containing 30 L seawater within an open flow system under laboratory conditions. No effects on survival resulted from these temperatures and fish density conditions were noted. The greatest growth was observed at 27°C and 400 fish/m3 , while fish reared at 24°C and 400 fish/m3 and 30°C and 400 fish/m3 had the least growth. The percent apparent daily feed consumption (%ADFC) was significantly different between the two different densities of fish reared at 27°C, but not at the lower or higher temperatures. Feed conversion ratio values were significantly different between fish grown at the intermediate (27°C) and the lower (24°C) temperatures, but not at the higher (30°C) temperature. Therefore, the most appropriate condition for growth of juvenile spotted sand bass cultured in laboratory is 27°C and 400 juvenile fish/m3 (equivalent to 0.84 g/L of initial biomass)."

Article

Cabrilla arenera, Paralabrax maculatofasciatus, temperatura, densidad, crecimiento Spotted sand bass, Paralabrax maculatofasciatus, temperature, density, growth. CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PECES Y FAUNA SILVESTRE PISCICULTURA PISCICULTURA

Coeficientes de utilización digestiva aparente de materia seca, proteína y aminoácidos esenciales de ingredientes terrestres para el camarón del Pacífico Litopenaeus vannamei (Decapoda: Penaeidae)

Apparent digestion coefficients for dry matter, protein and essential amino acids in terrestrial ingredients for Pacific shrimp Litopenaeus vannamei (Decapoda: Penaeidae)

MARTÍN MANUEL TERRAZAS FIERRO ROBERTO CIVERA CERECEDO Lilia Isabel Ibarra Martínez ERNESTO GOYTORTUA BORES (2010)

"Protein quality mainly depends on the essential amino acid (EAA) profile, but also on its bioavailability, because EAA digestibility is generally lower than the analyzed amounts. This information is needed in the aquaculture industry for aquafeed formulation. For this purpose, the apparent digestibility coefficients of dry matter, protein, and essential amino acids of eight feedstuffs of terrestrial origin were determined for the juvenile whiteleg shrimp Litopenaeus vannamei (15-19g), using 1% chromic oxide as an inert marker. A reference diet was formulated and produced in the laboratory. Eight experimental diets were prepared each with 30% of one of the experimental ingredients added to the reference diet: casein, porcine byproduct meal poultry byproduct meal, corn meal, wheat gluten meal, soybean paste, sorghum meal, and wheat meal. The experiment consisted of a single-factor, completely randomized design with three replicates per treatment. Samples of ingredients, diets and feces were analyzed for nitrogen and amino acids. For amino acid assay, we used reverse-phase high performance liquid chromatography. To avoid partial loss of methionine and cystine, samples of ingredients, diets, and feces were oxidized with performic acid to methionine sulfone and cysteic acid prior to acid hydrolysis. The apparent dry matter and protein digestive utilization coefficients varied from 68% to 109% and from 70% to 103%, respectively. Apparent digestibility of protein for casein, soy paste, wheat meal and wheat gluten were very high (over 90%), corn gluten and poultry byproducts meal showed high protein digestibility (over 80%), but porcine byproducts meal and sorghum meal had low digestibility (76% and 70%, respectively). There was a reasonable, but not total, correspondence between apparent protein digestibility and average essential amino acid digestibility coefficients, except for arginine in corn gluten, phenylalanine and leucine in sorghum meal, phenylalanine in soy paste and lysine in wheat meal and poultry by-product meal. The most digestible feed ingredients for whiteleg shrimp were: wheat gluten, wheat meal and soy paste; poultry byproduct meal and corn gluten were less digestible and the lowest digestibility occurred in porcine byproduct meal and sorghum meal. Feedstuffs exhibited great variability in dry matter, protein and amino acid digestive utilization coefficients, which should be considered when formulating shrimp feeds."

"Los aminoácidos esenciales y su disponibilidad son importantes en la formulación de alimentos. La digestibilidad de materia seca (DAMS), proteína (DAP) y aminoácidos esenciales (DAAA) fueron determinados (triplicado) para el camarón blanco del Pacífico, Litopenaeus vannamei (15-19g), usando una dieta de referencia con 30% (de cada ingrediente). Los ingredientes evaluados fueron: caseína (CAS), harinas de subproductos avícolas (HSPA) y porcícolas (HSPP), gluten de maíz (GLM) y trigo (GLT), pasta de soya (PS), harinas de sorgo (HS) y trigo (HT). La DAMS y DAP variaron entre 68%-109% y 70%-103%, respectivamente. La DAP en CAS, PS, HT y GLT fue mayor al 90%, en GLM y HSPA superior a 80%; HSPP (76%) y HS (70%) tuvieron menor digestibilidad. Hubo concordancia entre DAP y DAAA, excepto para Arg en GLM, Fen y Leu en HS, Fen en PS y Lis en HT y HSPA. Se encontró una gran variabilidad en la DAMS, DAP y DAAA en los ingredientes, lo que debe ser tomado en cuenta al formular alimentos para camarón. "

Article

digestibility, dry matter, protein, amino acids, feedstuffs, shrimp digestibilidad, materia seca, proteína, aminoácidos, ingredientes, camarón BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) NUTRICIÓN NUTRICIÓN

Apparent carbohydrate and lipid digestibility of feeds for whiteleg shrimp, Litopenaeus vannamei (Decapoda: Penaeidae), cultivated at different salinities

Digestibilidad aparente de carbohidratos y lípidos en alimentos para camarón blanco, Litopenaeus vannamei (Decapoda: Penaeidae), cultivados en diferentes salinidades.

Milena Gucic EDILMAR CORTES JACINTO ROBERTO CIVERA CERECEDO Denis Ricque-Marie LUIS RAFAEL MARTINEZ CORDOVA (2013)

"Whiteleg shrimp, Litopenaeus vannamei is one of the most commercially farmed species worldwide because of its fast growth, good survival rate at high farming densities, and osmoregulatory capacity, which makes it an excellent candidate for cultures at different salinities. The knowledge of shrimp nutritional requirements is critical in the formulation of diets to allow optimal growth at different environmental conditions and development stages. The effect of salinity on apparent digestibility of shrimp feed is not well known, and this information is required in shrimp diet formulation. For this purpose, the apparent digestibility coefficients of carbohydrates (ACD) and lipids (ALD) were determined for juvenile whiteleg shrimps under controlled culture conditions. We evaluated the apparent digestibility of six commercial (D1:37CP, D2:38CP, D3:39CP, D4:34CP, D5:35CP, and D6:37CP) and two experimental (E1:33CP and E2:33CP) diets for juvenile whiteleg shrimp cultivated at three salinities (5, 35and 50psu) in 60L aquariums. ACD and ALD were determined in vivo using chromic oxide as an inert marker. Our results showed that ALD in most cases was over 80%, independent of salinity, except the E1:33CPdiet which had 74.0% at 50psu. Diet D3:39CP showed the highest ALD coefficient (90.1 and 90.6% at 5 and 35psu, respectively). For ACD, differences were detected between commercial and experimental diets at every salinity level, although salinity effect on ACD was not significant. Diet D4:34CP had the highest coefficient (92.4%) at 5psu, and E2:33CP at 35 and 50psu (97.3 and 94.7%). This study demonstrated that there is no significant effect of saline variations on carbohydrate and lipid digestibility by juvenile whiteleg shrimp, under the experimental conditions..."

Article

diets, Litopenaeus vannamei, different salinities, digestibility BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) NUTRICIÓN

Efecto del nivel proteico de la dieta sobre el desarrollo de juveniles de la langosta australiana Cherax quadricarinatus (Decapoda: Parastacidae)

ALFREDO CAMPAÑA TORRES Humberto Villarreal Colmenares ROBERTO CIVERA CERECEDO Luis Rafael Martínez Córdova (2003)

"Un estudio experimental se realizó de octubre a diciembre de 1999, en el laboratorio de acuacultura del CIBNOR SC, en La Paz, BCS. Para evaluar el efecto del nivel proteico de la dieta sobre la respuesta productiva de juveniles de langosta australiana de agua dulce, Cherax quadricarinatus (redclaw), se formularon y probaron dietas con cuatro niveles de proteína (20.45, 28.25, 37.33 y 45.44%). El crecimiento, tasa de crecimiento específica, sobrevivencia, biomasa y el FCA fueron mayores en los juveniles alimentados con las dietas que contenían 37.33 y 45.44% de proteína cruda. Se concluye que el nivel proteico de la dieta afecta la respuesta productiva de los juveniles de langosta autraliana y que un nivel cercano a 37% de proteína, es suficiente para obtener resultados aceptables. "

"An experimental study was conducted from October to December, 1999, in the aquaculture facilities of CIBNOR SC, at La Paz, BCS. To evaluate the effect of diet protein level on the productive response, in juveniles of the australian lobster, Cherax quadricarinatus, diets with four levels of crude protein (20.45, 28.25, 37.33 y 45.44%), were formulated and probed. Growth, grow rate, survival, biomass and food conversion rate were greater in juveniles fed with diets of 37.33 and 45.44% of crude protein. It is concluded that diet protein level affects the productive response of redclaw and a level of 37% of crude protein in the diet is enough to obtain acceptable results."

Article

redclaw, Cherax quadricarinatus, nutrition BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) NUTRICIÓN NUTRICIÓN

Digestibilidad aparente de proteínas y de materia seca de dietas e ingredientes vegetales y animales para pre-adultos del acocil australiano Cherax quadricarinatus (von Martens 1858)

Apparent dry matter and protein digestibility of vegetal and animal ingredients and diets for pre-adult Australian redclaw crayfish Cherax quadricarinatus (von Martens 1858)

ALFREDO CAMPANA TORRES LUIS RAFAEL MARTINEZ CORDOVA HUMBERTO VILLARREAL COLMENARES ROBERTO CIVERA CERECEDO (2006)

"La digestibilidad aparente de proteínas y de materia seca de cuatro ingredientes animales y tres ingredientes vegetales, así como de las dietas en que se incluyeron, fueron evaluados para pre-adultos del acocil australiano Cherax quadricarinatus. Los ingredientes probados fueron: dos harinas de sardina (67% y 58% de proteína cruda), harina de calamar, harina de langostilla, pasta de soya, trigo texturizado y harina de sorgo. Una dieta de referencia y siete dietas experimentales fueron formuladas, incluyendo 14.5% de cada ingrediente en la dieta de referencia y 5% de óxido crómico como marcador. Los ingredientes vegetales y sus respectivas dietas, tuvieron más alta digestibilidad que los ingredientes animales y sus dietas. El trigo texturizado, la pasta de soya y la harina de sorgo, presentaron una excelente digestibilidad de materia seca (> 86%). La digestibilidad proteica fue mejor para el trigo texturizado y la pasta de soya (>87%). Algunos ingredientes animales como la harina de calamar y harina de sardina con 67% de proteína cruda, tuvieron una aceptable digestibilidad de materia seca (>65%). Se concluye que el acocil australiano, en su fase de pre-adulto, es un organismo omnívoro capaz de consumir eficientemente ingredientes de origen vegetal y animal, pero que digiere mejor los de origen vegetal."

"Apparent dry matter and protein digestibility of four animal and three vegetal ingredients and diets with them included, were evaluated for pre-adult Cherax quadricarinatus. The ingredients were: two sardine meals (67% and 58% crude protein), squid meal, red crab meal, soy paste, textured wheat, and sorghum meal. A reference and seven experimental diets were formulated including 14.5% of each ingredient in the reference diet, and 0.5% of chromic oxide as a marker. Vegetal ingredients and the corresponding diets, had higher digestibility than animal ingredients. Textured wheat, soy paste, and sorghum meals showed an excellent dry matter/digestibility (> 86%). The digestibility of protein was better in textured wheat, and soy paste meals (> 87%). Some animal ingredients such as, squid meal, and sardine meal 67% CP, had acceptable dry matter digestibility (over 65%). It is concluded that pre-adult redclaw is omnivorous and able to efficiently consume vegetal and animal ingredients, but they can digest better the vegetal ingredients."

Article

Nutrición de crustáceos, Cherax quadricarinatus, digestibilidad, ingredientes vegetales y animales, dietas. Crustacean nutrition, Cherax quadricarinatus, digestibility, vegetal and animal ingredients, diets. BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) NUTRICIÓN

Estudio de los parámetros de producción del acocil australiano Cherax quadricarinatus (von Martens, 1858), variando el nivel de proteína en su dieta

Study of production parameters of australian crayfish Cherax quadricarinatus (von Martens, 1858), varying its dietary protein level

ALFREDO CAMPANA TORRES LUIS RAFAEL MARTINEZ CORDOVA HUMBERTO VILLARREAL COLMENARES ROBERTO CIVERA CERECEDO (2005)

"Se llevó a cabo un estudio experimental en el Centro de Investigaciones Biológicas del Noroeste (CIBNOR), La Paz B.C.S. con el objetivo de evaluar el efecto de la variación del nivel proteico en dietas experimentales sobre el crecimiento, sobrevivencia y factor de conversión alimenticia (F.C.A.), de juveniles del acocil australiano Cherax quadricarinatus. Para ello, se formularon dietas con 4 niveles de proteína cruda (20.45, 28.50, 37.33 y 45.44%). Se utilizó un diseño experimental simple con un arreglo aleatorio, con cinco replicados por tratamiento. Las unidades experimentales fueron cajas de plástico de 0.30 m2, con 15 juveniles, cuyo peso fue 0.72 ±0.15 g. Se realizaron biometrías de crecimiento (cm), peso ganado (g) y al final, se determinó el peso y crecimiento totales, sobrevivencia y F.C.A.

Se encontró que los juveniles alimentados con dietas de 20.45 y 28.50% de proteína cruda, no presentaron diferencias estadísticamente significativas entre sí en ninguno de los parámetros de producción considerados. Lo mismo se encontró entre las dietas de 37.33 y 45.44% de proteína cruda. Sin embargo, sí se encontraron diferencias significativas entre las primeras dos dietas con respecto a las dos últimas. Por lo tanto, se concluye que el contenido de proteínas de la dieta, si afecta la respuesta productiva de los juveniles de esta especie. "

"An experimental study was conducted in the aquaculture facilities of CIBNOR, S.C., at La Paz B.C.S., Mexico, in order to evaluate the effect of the dietary protein level, on the growth, survival, and feed conversion rate of juvenile freshwater Australian lobster Cherax quadricarinatus (red claw). Diets with four experimental levels of protein (20.45, 28.50, 37.33, and 45.44%), were formulated, made, and probed. A single factor-completely randomized experimental design with five replicates were performed. The experimental units consisted of 20 plastic containers with 0.3 m2 of area. Fifteen juveniles of lred claw obster were stocked in each container. Growth, growth rate, survival, food consumption, and food conversion ration were evaluated. No statistical differences were found in any of the production parameters between juveniles fed diets 20.45, and 28.50% of crude protein, nor between those fed 37.33 and 45.44% of crude protein. However there were statistical differences between the two first and the two last diets. It is concluded that the level of protein in the diets, have an effect in the productive response of the juveniles of this specie. "

Article

Acocil australiano, Cherax quadricarinatus, nutrición. Australian Crayfish, Cherax quadricarinatus, nutrition. BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA ANIMAL (ZOOLOGÍA) NUTRICIÓN

Attractability and palatability of ingredients in longarm river prawn Macrobrachium tenellum feed

CYNTHIA EUGENIA MONTOYA MARTINEZ Héctor Gerardo Nolasco Soria FERNANDO VEGA VILLASANTE olimpia victoria carrillo farnés Carlos Alfonso Álvarez González ROBERTO CIVERA CERECEDO (2018)

"The present work evaluates the attractant and palatable potential of six ingredients of animal origin in longarm river prawn Macrobrachium tenellum juveniles in a Y type maze system. Ingredients were pelletized for the first bioassay and included in neutral gelatin (in wet base) in the second bioassay. The ingredient to evaluate was placed in one of the Y-maze arms, allowing the free movement of prawn for 15 min. On both bioassays, attractability was evaluated by quantifying the time required for the first prawn to enter the region where the feed was found and the total of prawns which entered that region. In the second bioassay, also evaluated the palatability quantifying the time for the first prawn to have contact with the ingredient, the total of prawns which had contact with it and the time they remained feeding. No significant differences were obtained between treatments in the first bioassay. Significant differences were found in the second bioassay showing that pork meal, fish meal, feather meal and shrimp meal have greater attractability due to the number of prawns attracted, results also show significant differences in palatability, where fishmeal, shrimp meal and pork meal stimulating a higher number of organisms and promoting a longer consumption time."

Article

Macrobrachium tenellum, chemoattraction, Y type maze, prawn, feeding, aquaculture CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PRODUCCIÓN ANIMAL NUTRICIÓN NUTRICIÓN

In vitro protein digestibility of animal, vegetal and microbial feed ingredients for Macrobrachium tenellum

CYNTHIA EUGENIA MONTOYA MARTINEZ Héctor Gerardo Nolasco Soria FERNANDO VEGA VILLASANTE olimpia victoria carrillo farnés Carlos Alfonso Álvarez González ROBERTO CIVERA CERECEDO (2018)

"Due to the cost of raw materials, the need to formulate balanced feeds with highly digestible ingredients is indispensable for the aquaculture feed industry. For this reason, the protein in vitro digestibility, assessed by the pH-stat method, of ingredients with potential of using them on the balanced feed for Macrobrachium tenellum, were evaluated. The relative protein digestibility was assessed in twelve feed ingredients, including animal (pork meal, feather poultry meal, prime poultry meal, turkey meal, fish meal, shrimp meal), vegetal (coconut paste, chickpea meal, soybean meal, wheat gluten) and microbial (yeast and Spirulina meal); casein (Hammerstein grade) was used as the reference protein. The highest relative protein digestibility was found in: Spirulina meal (52.6%); following by pork meal (45.6%), and feather poultry meal (39.6%). The lowest digestibilities were found in soybean meal (15.9%), chickpea meal (12.1%), and fish meal (11.6%). The protein digestibility value should be considered for selecting potential ingredients for the formulation of balanced feeds for M. tenellum."

Article

Macrobrachium tenellum, prawns, nutrition, protein, enzyme activity, digestibility, aquaculture CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PRODUCCIÓN ANIMAL NUTRICIÓN NUTRICIÓN