scholarly journals Evaluación de alimentos microencapsulados en el cultivo de larvas de pejelagarto (Atractosteus tropicus)

2018 ◽  
Vol 66 (3) ◽  
pp. 1298
Author(s):  
Miguel Saenz de Rodrigáñez ◽  
Federico Vladymir Aguilar-Tellez ◽  
Francisco Javier Alarcón-López ◽  
Ruth Pedrosa-Islas ◽  
Emyr Saul Peña-Marín ◽  
...  
Keyword(s):  
Enzyme Preparation ◽  
Fish Meal ◽  
Control Diet ◽  
Control Treatment ◽  
Nannochloropsis Gaditana ◽  
Growth And Survival ◽  
Artemia Nauplii ◽  
Design And Manufacturing ◽  
Tropical Gar ◽  
Atractosteus Tropicus

Four microencapsulated diets were evaluated with respect to the growth and survival of tropical gar Atractosteus tropicus larvae. The treatments consisted of four experimental diets and one control diet 1) fish meal, 2) a combination of pork and poultry meals, 3) Nannochloropsis gaditana meal, 4) enzyme preparation and the control treatment 5) Artemia nauplii. The evaluation indicated that the larvae fed the Artemia nauplii obtained the greatest growth and survival (3.93 cm, 0.19 g y 82 % respectively), which justifies a correct culture system operation. While larvae fed microencapsulated diets best values in survival were observed with diets Nannochloropsis gaditana and enzyme preparation (20.0 and 19.2 %). Our results showed that microencapsulated could be used to feed A. tropicus in feasibly form. However, more information concerning to optimize the design and manufacturing are required to improve the growth and survival of organisms.

scholarly journals Dietary live yeast (Debaryomyces hansenii) provides no advantages in tropical gar, Atractosteus tropicus (Actinopterygii: Lepisosteiformes: Lepisosteidae), juvenile aquaculture

2021 ◽  
Vol 51 (3) ◽  
pp. 311-320
Author(s):  
Iris Adriana Hernández-López ◽  
Dariel Tovar-Ramírez ◽  
Susana De la Rosa-García ◽  
Carina Shianya Álvarez-Villagómez ◽  
Gloria Gertrudys Asencio-Alcudia ◽  
...  
Keyword(s):  
Transforming Growth Factor ◽  
Digestive Enzyme ◽  
Control Diet ◽  
Debaryomyces Hansenii ◽  
Daily Weight Gain ◽  
Fish Feed ◽  
Southern Mexico ◽  
Tropical Gar ◽  
Atractosteus Tropicus ◽  
Live Yeast

Tropical gar, Atractosteus tropicus Gill, 1863, is an ancient freshwater fish that is commercially cultivated in southern Mexico. Currently, there is a specific diet for its culture; however, the addition of probiotics has not been investigated. The objective of this study was to evaluate the supplementation of live yeast Debaryomyces hansenii for A. tropicus juveniles on growth, productive parameters, survival, somatic index, digestive enzyme activity, and immune system gene expressions (interleukin 10, il-10, Transforming growth factor β1, tgf-β1, and β2 microglobulin, b2m). Three experimental diets increased the dose of live yeast (0.5, 1.0, and 1.5%; 1014, 1015, and 1016CFU g diet–1, respectively) and a control diet (CD; without yeast) were designed. Daily weight gain and specific growth rate were higher in fish fed with CD and 0.5% D. hansenii. High activities of trypsin, chymotrypsin LAP, and α-amylase, as well as overexpression of il-10 in the spleen, were detected in fish feed 0.5% D. hansenii. The inclusion of D. hansenii had no positive effect on aquaculture for A. tropicus, lower doses should be tested to optimize the diet.

Evaluation of growth performance of Penaeus monodon (Fabricius) fed diet with partial replacement of fishmeal by Spirulina platensis (Sp) meal

2018 ◽  
Author(s):  
Natesan Sivakumar ◽  
Muthuraman Sundararaman ◽  
Gopal Selvakumar
Keyword(s):  
Growth Rate ◽  
Spirulina Platensis ◽  
Fish Meal ◽  
Control Diet ◽  
Penaeus Monodon ◽  
Carcass Composition ◽  
Partial Replacement ◽  
Protein Ratio ◽  
Growth And Survival ◽  
And Control

A partial replacement of fish meal with Spirulina platensis (Sp) meal for the diet of juvenile shrimp Penaeus monodon (Fabricius) was analyzed for the growth and survival under laboratory condition. A total of five experimental diets were formulated with partial replacement of fishmeal by Sp meal, Sp-1 (14.3%), Sp-2 (28.6%), Sp-3 (42.8%), Sp-4 (57.14%), and the control diet (Sp meal free diet). The feeding trial was conducted for the period of 60 days. Juveniles fed with Sp meal supplemented diet showed significant (P less than 0.05) improvement of carcass composition (protein ratio and edible flesh). Higher growth and survival were obtained in P. monodon fed with Sp-3 diet, it was significantly (P less than 0.05) greater than the Sp meal free diet. The feeding efficiency (FE), specific growth rate (SGR) and survival (93.3%) of the shrimp was significantly (P less than 0.05) high in the Sp-3 diet. Survival rate was also higher in diet Sp-3 (42.8% substitution), but lower survival and growth rate observed in Sp-4 (57.14% substitution) and control diets. The Physico-chemical quality of the experimental tank water was better in Sp-3, and Sp-2 diet groups. This study recommended that Sp meal as alternative protein substitute of fish meal in shrimp diet.

scholarly journals Dietary live yeast (Debaryomyces hansenii) provides no advantages in tropical gar, Atractosteus tropicus (Actinopterygii: Lepisosteiformes: Lepisosteidae), juvenile aquaculture

2021 ◽  
Vol 51 (3) ◽  
pp. 311-320
Author(s):  
Iris Adriana Hernández-López ◽  
Dariel Tovar-Ramírez ◽  
Susana De la Rosa-García ◽  
Carina Shianya Álvarez-Villagómez ◽  
Gloria Gertrudys Asencio-Alcudia ◽  
...  
Keyword(s):  
Transforming Growth Factor ◽  
Digestive Enzyme ◽  
Control Diet ◽  
Debaryomyces Hansenii ◽  
Daily Weight Gain ◽  
Fish Feed ◽  
Southern Mexico ◽  
Tropical Gar ◽  
Atractosteus Tropicus ◽  
Live Yeast

Tropical gar, Atractosteus tropicus Gill, 1863, is an ancient freshwater fish that is commercially cultivated in southern Mexico. Currently, there is a specific diet for its culture; however, the addition of probiotics has not been investigated. The objective of this study was to evaluate the supplementation of live yeast Debaryomyces hansenii for A. tropicus juveniles on growth, productive parameters, survival, somatic index, digestive enzyme activity, and immune system gene expressions (interleukin 10, il-10, Transforming growth factor β1, tgf-β1, and β2 microglobulin, b2m). Three experimental diets increased the dose of live yeast (0.5, 1.0, and 1.5%; 1014, 1015, and 1016CFU g diet–1, respectively) and a control diet (CD; without yeast) were designed. Daily weight gain and specific growth rate were higher in fish fed with CD and 0.5% D. hansenii. High activities of trypsin, chymotrypsin LAP, and α-amylase, as well as overexpression of il-10 in the spleen, were detected in fish feed 0.5% D. hansenii. The inclusion of D. hansenii had no positive effect on aquaculture for A. tropicus, lower doses should be tested to optimize the diet.

scholarly journals Pike-Perch (Sander lucioperca) and Rainbow Trout (Oncorhynchus mykiss) Fed with an Alternative Microorganism Mix for Reducing Fish Meal and Oil—Fishes’ Growth Performances and Quality Traits

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1799
Author(s):  
Michaela Schafberg ◽  
Karin Loest ◽  
Andreas Müller-Belecke ◽  
Sascha Rohn
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Growth Performance ◽  
Fish Meal ◽  
Control Diet ◽  
Sander Lucioperca ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Growth Performances ◽  
Pike Perch ◽  
Carcass Parameters

In the last decades, several plant-based materials were used for the substitution of fish meal and oil in aquaculture. The present study evaluated the fish quality and the sensory differences of rainbow trout (Oncorhynchus mykiss) and pike-perch (Sander lucioperca) from three different feeding groups, which were fed a commercially available industrial (standard) diet, a control diet, and a special microorganism-based feed mix. This feed mainly consisted of a mix made of Rhodotorula glutinis, Crypthecodinium cohnii, and Arthrospira sp. and had 50% less fish meal and fish oil compared to typical control diets. At the beginning, the pike-perch population was six months old, and the rainbow trout population was 15 months old. The feeding study duration was 16 weeks and every four weeks the growth performance and several morphometric parameters were recorded. Afterwards, sensory evaluation took place to identify possible trends. Sensory evaluation revealed that the rainbow trout groups did not show any significant differences to the standard and control fish fillets with regard to odor, texture, and taste. The effects on rainbow trout growth performances and carcass parameters were similar to the standard group. The feed mix was not optimal for pike-perch farming, which was also reflected by significantly adversely affected growth performance and carcass parameters. The sensorial evaluation showed an opposite trend: here, only small differences in the fillets from the feed mix and standard/control diet were observed.

scholarly journals Effects of a Trans-Galactooligosaccharide on Minerals Content of Common Carp (Cyprinus carpio L.) Tissues

2021 ◽  
Author(s):  
Ewa Ziółkowska ◽  
Joanna Bogucka ◽  
Jan Mazurkiewicz ◽  
Mateusz Rawski ◽  
Szymon Różański ◽  
...  
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Control Diet ◽  
Colorimetric Method ◽  
Bifidobacterium Bifidum ◽  
Feed Additives ◽  
Control Treatment ◽  
Control Group ◽  
Whole Cells ◽  
Freeze Dried

AbstractCommon carp (Cyprinus carpio L.) is a dominant fish species in aquaculture, and as it is a stomachless species, absorption and digestion of nutrients take place in the intestine. The aim of the study was to evaluate the effects of a prebiotic on the content of selected minerals found in the meat, gills, and skeleton of common carp. The research applied trans-galactooligosaccharide (GOS) prebiotic produced by enzymatic transgalactosylation of milk lactose by whole cells of Bifidobacterium bifidum. The following diets have been applied: control diet without feed additives (C), diet 2 (B1) with 1% of GOS, and diet 3 (B2) with 2% of GOS. In the freeze-dried samples, concentrations of the analyzed metals were determined using atomic absorption spectroscopy (AAS). The content of phosphorus was determined using colorimetric method. The analyses confirmed that the highest level of Mg was detected in the skeleton of fish fed with 1% GOS (2.51 g kg−1) and was significantly higher compared the control treatment (2.11 g kg−1) (P < 0.05). Zn content in fish meat fed with 1% GOS (35.41 mg kg−1) was significantly higher (P < 0.05) than in the control group (24.59 mg kg−1). The tissue that accumulated the greatest amount of Zn was the gills. GOS had a positive effect on Fe accumulation in the meat, gills, and skeleton. It has been concluded that supplementation of feed with 2% GOS significantly influenced the positive correlations between Mg and P in the meat and skeleton, Fe–Ca correlation in gills, and Fe–Zn correlation in the skeleton.

Feeding performance of juvenile marble goby (Oxyeleotris marmorata Bleeker, 1852) fed acidified diets

2018 ◽  
Vol 26 (4) ◽  
pp. 211-216
Author(s):  
Leong-Seng Lim ◽  
Chui-Fen Teoh ◽  
Gunzo Kawamura ◽  
Annita Seok-Kian Yong ◽  
Rossita Shapawi
Keyword(s):  
Body Length ◽  
Fish Meal ◽  
Control Diet ◽  
Dietary Treatment ◽  
Feeding Trial ◽  
Feeding Performance ◽  
Daily Ingestion ◽  
Ph Level ◽  
Ingestion Ratio ◽  
And Control

Abstract The present study aimed to evaluate the feeding performance of juvenile marble goby (Oxyeleotris marmorata) on acidified diets. Five fish meal-based diets at various pH levels (2.5, 3.2, 4.3, 5.3, and 6.0 (control)) were prepared, and each of them was fed to 10 wild-caught O. marmorata juveniles (body length 7.7–9.3 cm; each fish was placed in an aquarium, hence each dietary treatment was in 10 replicates) for 20 days. Throughout the feeding trial, O. marmorata juveniles showed clear increments in the daily ingestion ratio (IR) values of AD 2.5, AD 3.2, and AD 4.3. The control diet and AD 5.3 were almost totally rejected by the fish. On day 20, the IR of AD 2.5 (0.46) and AD 3.2 (0.36) were significantly higher (P < 0.05) than those of AD 5.3 (0.1) and the control diet (0.02). In addition, 70% of fish fed AD 2.5 achieved a high IR value (0.6 – 1.0), and this was the best result among all the treatments (AD 3.2, 60%; AD 4.3 50%; AD 5.3 and control, 10%). These results suggested that acidified diets can be used to wean O. marmorata juveniles, and the recommended pH level was 2.5.

scholarly journals Dietary soybean meal on growth and intestinal morphology of South American catfish, Rhamdia quelen, larvae

2012 ◽  
Vol 42 (9) ◽  
pp. 1662-1668 ◽  
Author(s):  
David Roque Hernández ◽  
Juan José Santinón ◽  
Sebastián Sánchez ◽  
Hugo Alberto Domitrovic
Keyword(s):  
Soybean Meal ◽  
Control Diet ◽  
Intestinal Morphology ◽  
Control Group ◽  
South American ◽  
Growth And Survival ◽  
Posterior Intestine ◽  
Rhamdia Quelen ◽  
Anterior Intestine ◽  
Morphology Parameters

The effects of the replacement of bread yeast by soybean meal in diets for Rhamdia quelen larvae on growth, survival, and intestinal morphology were analysed. Larvae were fed for 20 days with five diets: a control diet formulated with 57% of bread yeast, and other four diets in which soybean meal at concentrations of 14.25, 28.5, 42.75 and 57% was added to obtain 25, 50, 75 and 100% of bread yeast replacement. Growth and survival parameters were negatively affected by dietary soybean meal inclusion. Larvae fed control diet showed significantly higher mean weight, specific growth rate, final biomass, and survival rate than larvae from other treatments. Enterocyte height and fold width of the posterior intestine showed highest values in the control group, and an inverse linear relationship with the level of dietary soybean meal inclusion was observed, however, in the anterior intestine the morphology parameters were not affected by the diet. These results indicate that inclusion of soybean meal in diets for R. quelen larvae negatively affects growth and survival, as well as the capacity for digestion and absorption of nutrients, mainly in the posterior intestine.

scholarly journals Effect of isoproteinous feed on growth and survival of tilapia (Oreochromis niloticus) fry

2012 ◽  
Vol 10 (1) ◽  
pp. 169-174
Author(s):  
I Siddika ◽  
M Das ◽  
K R Sumi
Keyword(s):  
Wheat Flour ◽  
Rice Bran ◽  
Oreochromis Niloticus ◽  
Fish Meal ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Meat And Bone Meal ◽  
Bone Meal ◽  
Growth And Survival ◽  
Significant Difference

A four week experiment was conducted to evaluate the effect of isoproteinous (35%) feed prepared named diet 1, 2, 3 and 4 respectively by substituting 0%, 50% , 75% and 100% fish meal with meat and bone meal in view of preparing a cost effective tilapia (Oreochromis niloticus) fry feed. The four experimental diets (diet 1 to 4) each were randomly assigned to twelve hapas with three replications. Tilapia fry (0.011g) were randomly stocked in 100 fry/9ft² hapa and fed five times a day up to their apparent satiation. The results of the study showed that the weight gain, specific growth rate (SGR), the apparent net protein utilization value and survival (%) of the fish were significantly  (P<0.05) higher and better feed utilization with lower FCR value was observed in fish fed on the diet 4 where meat and bone meal was used as sole source of protein base. There was no significant difference between the carcass moisture and lipid of fish fed with different experimental diets. The results of the study indicated that diet 1 containing fish meal (45.15% Fish meal, 27.43% Rice bran and 27.43% Wheat flour) can be replaced by meat and bone meal containing diet 4 (54.06% Meat and bone meal, 22.97% Rice bran and 22.97% Wheat flour) with no adverse effects on growth and survival of O. niloticus. Before recommendation several trials will be necessary in different farms to be  sure of the reproducibility of the result obtained in the present experiment. Cost- benefit analysis reveals that the   meat and bone meal containing diet certainly provides cheaper feed.   DOI: http://dx.doi.org/10.3329/jbau.v10i1.12110   J. Bangladesh Agril. Univ. 10(1): 169–174, 2012  

Partial sequence characterization and ontogenetic expression of genes involved in lipid metabolism in the tropical gar ( Atractosteus tropicus )

2018 ◽  
Vol 50 (1) ◽  
pp. 162-172 ◽  
Author(s):  
Luis D. Jiménez‐Martínez ◽  
Carlos A. Álvarez‐González ◽  
Erick De la Cruz‐Hernández ◽  
Dariel Tovar‐Ramírez ◽  
Mario A. Galaviz ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Partial Sequence ◽  
Sequence Characterization ◽  
Expression Of Genes ◽  
Tropical Gar ◽  
Atractosteus Tropicus

scholarly journals Effects of the Ratio of Dietary Fish Meal to Soybean Meal on the Performance of Broiler Chicks

2021 ◽  
Vol 4 (1) ◽  
pp. 47-53
Author(s):  
Nwe Nwe Htin ◽  
May Phyo Chit
Keyword(s):  
Body Weight ◽  
Soybean Meal ◽  
Fish Meal ◽  
Control Diet ◽  
Point Of View ◽  
Feed Consumption ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Dietary Fish

A completely randomized design (CRD) was used with a total of 160 day-old commercial broiler chicks which were randomly assigned to four treatment groups with five replicates into 20 pens and brooded. Feed and water were provided ad libitum. From day old chick to 21 day, the broiler chicks were fed Diet 1 (5% fish meal and 25% soybean meal, 1: 5), Diet 2 (3% fish meal and 30% soybean meal, 1: 10) was served as control diet, Diet 3 (2% fish meal and 30% soybean meal, 1: 15) and Diet 4 (1.5% fish meal and 30% soybean meal, 1: 20). From day 22 onwards, the broiler chicks were fed finisher diet, Diet 1 (5% fish meal and 25% soybean meal, 1: 5), Diet 2 (2.6% fish meal and 26% soybean meal, 1: 10, serve as control diet, Diet 3 (1.8% fish meal and 27% soybean meal, 1: 15) and Diet 4 (1.3% fish meal and 26% soybean meal, 1: 20). Weekly performances and mortality are measured. By feeding FS5 diet (5% fish meal and 25% soybean meal), the heavier body weight, increased feed consumption and feed conversion ratio of broiler chicks was observed when compared to that of other treatment groups. Conclusively, it is obvious that the ratio of dietary fish meal to soybean meal 1: 5 (FS5) improved body weight but the lower feed efficiency of this diet should be considered in economical point of view.

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