scholarly journals Blood chemistry profile of Surubim hybrid fish (Pseudoplatystoma reticulatum X P. corruscans) raised in different stocking densities

2013 ◽  
Vol 37 (3) ◽  
pp. 251-258 ◽  
Author(s):  
Carla Rosa Labarrère ◽  
Paulo Mário Carvalho de Faria ◽  
Edgar de Alencar Teixeira ◽  
Marília Martins Melo
Keyword(s):  
Stocking Density ◽  
Blood Chemistry ◽  
Serum Enzymes ◽  
Fish Health ◽  
Significant Difference ◽  
Hybrid Fish ◽  
Recirculation System ◽  
Calcium Phosphorus ◽  
Water Recirculation ◽  
Stocking Rates

Massive production, such as fish growing in water recirculation system, imposes challenges to animals capable of altering their homeostatic balance, and is able to affect their physiological performance. Therefore, the levels of ions and serum enzymes can be used as indicators of fish health. This study aimed to analyze the blood biochemistry profile of hybrid surubim (P. reticulatum X P. corruscans) submitted to different stocking densities in water recirculation system, in two distinct stages of production, from 150 to 400 g (first trial), and 400 to 1000 g (second trial). In the first trial, the five stocking rates were: 27.5, 47.5, 67.5, 87.5 and 107.5 fish/m³ of water. To obtain these densities, it was used 11, 19, 27, 35 and 43 fish per tank, respectively. In the second trial, five stocking rates were: 10, 20, 30, 40 and 50 fish/m³ of water. To obtain these densities we used 4, 8, 12, 16 and 20 fish per tank, respectively. The concentrations of glucose, cholesterol, triglycerides, urea, creatinine, alkaline phosphatase (ALP), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), calcium, phosphorus, potassium and magnesium were obtained. Only urea concentrations in first trial and ALP and AST concentrations in second trial were influenced by stocking density, presenting a significant difference between groups. Thus, in both trials the hybrid fish studied maintained homeostasis when reared in different stocking densities.

scholarly journals Growth performance and survival rate of catfish (Pangasianodon hypophthalmus) juvenile which is reared in recirculation system

2020 ◽  
Vol 20 (3) ◽  
pp. 271
Author(s):  
Yuke Eliyani ◽  
Iin Siti Djunaidah ◽  
Sujono Sujono
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Survival Rates ◽  
Stocking Density ◽  
Fish Growth ◽  
Water Volume ◽  
Bacillus Sp ◽  
Pangasianodon Hypophthalmus ◽  
Significant Difference ◽  
Recirculation System

Although recirculation is a cultivation system that has been tried in various commodities, but the effectiveness of this system to the growth and survival of catfish juvenile has not been done. This study aims to determine the effective-ness of recirculation system on growth performance and survival rate of catfish juvenile (Pangasianodon hypophthal-mus). The research was conducted from 11 October to 30 November 2019 at hatchery unit Department of Fisheries Extension, Jakarta Technical University of Fisheries. This study used experimental method with 3 treatments, namely Control (K: 100% Bioball + Bacillus sp.), Treatment 1 (P1: 50% Bioball + 25% zeolite + 25% resin + Bacillus sp.) and Treatment 2 (P2: Bioball 25 % + zeolit 50% + resin 25% + Bacteria Bacillus sp.). The catfish used in this study was measured 0.08 + 0.02 g. Ind.-1. The fish were kept in a concrete tub of 100 cm x 150 cm x 70 cm with water volume of 750 liters tub-1. Stocking density of fish was 5 fish liters-1. Fish juveniles were fed with commercial feed with a dose of 3% of fish biomass with frequency of 3 times a day-1. Observation fish growth and water sampling for monitoring of the abundance of nitrogen-decomposing bacteria and water quality were carried out every 15 days. The results showed that the highest growth weight of catfish seedlings was found in treatment P1 (0.447±0.142b) compared with K (0.377±0.047a) and P2 (0.363±0.057a) treatment. The values of survival rate for K, P1 and P2 treatments were 51±8, 54±4 and 52±8, respectively. This result implies that no significant difference in the survival rates in all treatments.

Features of system for water recirculation in thermal power plant ‘Morava’ on the right bank of River Velika Morava

2013 ◽  
Vol 8 (3-4) ◽  
pp. 342-349
Author(s):  
L. Andjelic ◽  
M. Pavlovic ◽  
B. Babovic
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Drainage System ◽  
Water Quantity ◽  
Hydraulic Transport ◽  
Productive Force ◽  
Recirculation System ◽  
Water Recirculation ◽  
The Right

The thermal power plant ‘Morava’, with a productive force of 125 MW, is located on the right bank of the River Velika Morava, near the city of Svilajnac, Serbia. This power plant uses coal for production. Ash and slag from the coal are burned and go to a landfill by hydraulic transport. The ratio of the liquid/solid mixture is 10:1. Towards the reduction of water quantity taken from the Velika Morava river for hydraulic transport, it's provided to build a water recirculation system for overflow and drainage water from landfill to power plant. In this paper, the results of the hydraulic study of water balance in landfill is shown. The goal of this study is to assess the water quantity in landfill, which can then be reused for hydraulic transport. For dimensioning of drainage system and overflow building on landfill, it was necessary to perform detailed analysis of rainfall and filtration throw landfill. With results of water quantity in drainage system, and overflow water, all parts of the recirculation system of water, from landfill to power plant, was performed. Also, in this paper are the data of hydraulic transport of mixture of water and ash/slag.

Avaliação da Eficácia da Administração de Dexametasona ou Metilprednisolona para Produzir Osteoporose em Ratas/ Evaluating the Effectiveness of Dexamethasone or Methylprednisolone to Produce Osteoporosis in Rats

2011 ◽  
Vol 1 (1) ◽  
pp. 22
Author(s):  
Nilo César do Vale Baracho ◽  
Alexandre Mata de Paula ◽  
Roberto Franzini Junior ◽  
Rogério Mariotto Bitetti da Silva ◽  
Bruno Appolari ◽  
...  
Keyword(s):  
Bone Mass ◽  
Disease Incidence ◽  
Public Health Problem ◽  
Bone Thickness ◽  
Good Marker ◽  
Significant Difference ◽  
Group Control ◽  
Successful Induction ◽  
Calcium Phosphorus ◽  
De Medicina

Introdução: A osteoporose é considerada um grave problema de saúde pública em todo o mundo. No Brasil ainda não há dados estatísticos sobre a real incidência desta doença. Os glicocorticóides representam uma classe de drogas muito usada, sendo que podem influenciar significativamente a massa óssea. Entretanto, após tratamento com glicocorticóides em ratos, esses podem ou não apresentar alterações na massa óssea. Objetivo: Avaliar a eficácia da administração de dexametasona ou metilprednisolona em produzir osteoporose em ratas. Métodos: Vinte e quatro ratas, oriundas do biotério da Faculdade de Medicina de Itajubá, foram utilizadas e divididas em três grupos: controle, metilprednisolona e dexametasona. Foram avaliados íons e proteínas totais sanguíneos e feita a análise histopatológica de tecido ósseo. Resultados e conclusão: Pela análise histológica da espessura trabecular óssea, houve redução da massa óssea dos grupos tratados com glicocorticóides em comparação com o grupo controle, evidenciando o sucesso da indução de osteoporose. Além disso, houve uma maior redução da massa óssea no grupo tratado com dexametasona, em comparação com o grupo tratado com metilprednisolona. A análise bioquímica de cálcio, fósforo, magnésio e proteínas totais não sofreram diferença significativa entres os grupos, não sendo um bom marcador para remodelamento ósseo e para diagnóstico de osteoporose.Evaluating the Effectiveness of Dexamethasone or Methylprednisolone to Produce Osteoporosis in RatsIntroduction: Osteoporosis is considered a serious public health problem in worldwide. In Brazil we do not have statistics on the real disease incidence. Glucocorticoids are a class of drugs widely used, and can significantly influence bone mass. However, after treatment with glucocorticoids in rats, these may or may not show changes in bone mass. Objective: Evaluating the effectiveness of dexamethasone or methylprednisolone to produce osteoporosis in rats. Methods: Twenty-four rats, originated from the vivarium of the Faculty of Medicine Itajubá were used and divided into three groups: control, methylprednisolone and dexamethasone. Ions was evaluated blood and histopathology of bone tissue. Results and conclusion: by histologic analysis of trabecular bone thickness, a reduction of the mass bone in the groups treated with glucocorticoids compared with the group control, demonstrating the successful induction of osteoporosis. Furthermore, there was a greater reduction in bone mass in the group treated with dexamethasone compared with the group treated with methylprednisolone. The analysis biochemistry of calcium, phosphorus, magnesium and total protein did not undergo significant difference among the groups, there is a good marker for bone remodeling and osteoporosis diagnosis.

scholarly journals PSX-7 Effect of varying levels of hempseed meal supplementation on animal performance, rumen fermentation, and blood metabolites of growing meat goats

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 459-460
Author(s):  
Frank W Abrahamsen ◽  
Nar Gurung ◽  
Woubit Abdela ◽  
Gopal Reddy ◽  
Kim Mullenix
Keyword(s):  
Mixed Model ◽  
Average Daily Gain ◽  
Live Weight ◽  
Blood Chemistry ◽  
Optimal Level ◽  
Rumen Fermentation ◽  
Serum Glucose ◽  
Mixed Model Analysis ◽  
Meat Goats ◽  
Significant Difference

Abstract Hempseed meal (HSM) is a byproduct of hemp oil production and is high in crude protein, fiber, and fat, making it a potential feedstuff for ruminants. The objective of this study was to evaluate the effect of HSM supplementation on growth performance, rumen fermentation and blood chemistry profile of growing meat goats. Forty castrated, Boer cross goats were randomly assigned to one of the four treatments (n = 10): control, 10%, 20%, and 30% HSM supplementation. Data collected over a period of a 60-day feeding trial were analyzed utilizing the mixed model analysis function of SYSTAT, version 13. The result revealed total live weight gain decreased with the increasing levels of HSM supplementation 10.75, 9.53, 8.48, and 7.80 kg, for 0, 10, 20, and 30%, respectively. Average daily gain followed the same trend 0.179, 0.159, 0.141, and 0.13 kg, with a significant difference (P < 0.05) observed between the control and 30 % supplementation. Conversely, feed to gain ratio increased with the increasing levels of supplementation 9.0, 10.2, 11.9, 12.2, likewise a significant difference was observed (P < 0.05) between the control and 30% supplementation. Acetic, propionic, butyric, valeric, iso-valeric, and iso-butyric acid concentrations as well as the total VFA concentration decreased significantly (P < 0.05) with the increasing level of supplementation. Acetic to propionic acid ratios increased with increasing level of supplementation 3.43, 4.36, 4.52, and 4.59, significant differences (P < 0.05) were observed between control-20% and 30% HSM group. Serum glucose concentration decreased with an increasing rate of HSM supplementation while BUN concentration increased with no significant differences. These findings provide new insights into the feeding value of HSM for meat goats; however, further research needs to be conducted to determine the optimal level of supplementation.

Effects of Different Stocking Densities on Growth, Serum Steroid Hormone Concentrations, Gonadosomatic Index and Sex Reversal in the Rice Field Eel, Monopterus albus (Zuiew)

2011 ◽  
Vol 142 ◽  
pp. 233-237
Author(s):  
Han Wen Yuan ◽  
Fang Chen ◽  
Qiao Qing Xu ◽  
Shi Yuan Gong ◽  
Zhang Jie Chu ◽  
...  
Keyword(s):  
Rice Field ◽  
Steroid Hormone ◽  
Gonadosomatic Index ◽  
Stocking Density ◽  
Sex Reversal ◽  
The Other ◽  
Daily Weight Gain ◽  
Monopterus Albus ◽  
Rice Field Eel ◽  
Significant Difference

The effects of stocking density on various growth parameters and sex reversal in the rice field eel (Monopterus albus) were investigated by evaluating steroid hormone, the gonadosomatic index (GSI) and sex ratio. Fish (mean initial weight of 9.88 ± 0.70 g) were stocked to densities of 4, 20, 36, 52, 68, 84 or 100 fish/m2 in cages (2 m × 1 m × 1.5 m) in a pond, with five replicate cages for each density. Fish were fed for 420 days on a formulated isocaloric diet containing 40.22% crude protein and 12.86 MJ/kg. Serum E2 and T concentrations were determined by radioimmunoassays. There were no significant differences in final bodyweight (FBW) and daily weight gain (DWG) for fish in the groups containing less than 52 fish/m2, while FBW and DWG were significant lower in groups at 68 fish/m2 or more. Specific growth rate (SGR) differed significantly between the 84 and 100 fish/m2 groups compared with the 4, 20 and 36 fish/m2 groups. There was no significant difference in SGR in groups containing less than 84 fish/m2. There were no significant difference between the 4 and 20 fish/m2 groups in net yield (NY), but these groups did differ significantly from the other groups. The final condition factors of fish stocked at 84 or 100 fish/m2 were significantly lower than fish stocked at the other densities. E2 and T hormone concentrations declined as stocking density increased, while GSI values increased initially but then reduced with increasing stocking density. Female ratio and survival decreased with increasing stocking density. The proportion of male fish was significantly greater in the three highest stocking density groups. Therefore, high stocking density may promote sex change from female to male in M. albus.

scholarly journals Study of Biofilter Planted with Basil for Removal of Ammonia in Aquaponic Water

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bharat Nandkumar Mulay ◽  
Konda Rajasekhar Reddy
Keyword(s):  
Water Quality ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
Coarse Aggregates ◽  
Total Ammonia Nitrogen ◽  
Coconut Husk ◽  
Significant Difference ◽  
Total Ammonia ◽  
Water Recirculation ◽  
Aquaculture Water

Abstract This experimental investigation of a laboratory scale aquaponic system included testing of a biofilter with basil plant as the biofilter part on aquaculture water quality. Irridescent shark was selected as aquaculture species. The biofilter consist of natural biomaterials such as coconut husk, coco peat, and coarse aggregates. The experiment was carried out for three short water recirculation durations of 2, 3, and 4 h/day. The influent and effluent ammonia NH3, total ammonia nitrogen (TAN), nitrites NO2 and nitrates NO3 levels were measured and analysed. The results showed that the biofilter effectively removed NH3 (65 - 71 %), TAN (34 - 58 %), and NO2 (60 - 67 %) from the aquaculture water. The dissolved oxygen (DO) levels were maintained between 3 - 7.0 mg/l during all the recirculation durations. The significance of water recirculation period was assessed by calculating the differences between the means of water quality parameters with a statistical test named one-way analysis of variance (ANNOVA) with significant level P taken as 5 %, i.e., P ≤ 0.5. The effluent mean NH3 levels 0.030 mg/l, 0.033 mg/l, and 0.022 mg/l exhibited significant difference at 4 h/d periods while effluent TAN levels 0.81, 0.77, and 0.77 showed no difference with varying periods.

scholarly journals Water quality, growth and production performance of stinging catfish, Heteropneustes fossilis (Bloch) in cemented tanks with two different stocking densities

2019 ◽  
Vol 47 (1) ◽  
pp. 107-119
Author(s):  
Dulon Roy ◽  
Abdullah Al Masud ◽  
Pritam Kumar Saha ◽  
MM Kutubuddin ◽  
Md Muzahidul Islam
Keyword(s):  
Water Quality ◽  
Body Weight ◽  
Survival Rate ◽  
Stocking Density ◽  
Culture Technique ◽  
Production Performance ◽  
Heteropneustes Fossilis ◽  
Tank Culture ◽  
Significant Difference ◽  
T1 And T2

Attempt has been taken to develop intensive tank culture technique providing natural environment for Stinging catfish (Heteropneustes fossilis) inside tank to increase survival rate as well as production. The experiment was conducted for a period of 150 days in two tanks (T1 and T2) of 300 m2. Fish fries with a mean weight and length ranged from 1.02 to 2.2 g and 2.7 to 3.5 cm were stocked in T1 and T2, respectively. Stocking density of fingerlings were 1, 25,000 and 1, 50,000 per Ha in T1 and T2, respectively. Commercial pelleted feed was supplied to tank reared fish twice daily at a rate of 3-10% of body weight per day and later feeding rate was adjusted based on body weight by sampling. Important water quality parameters (temperature, DO, pH, transparency, ammonia and nitrate) were recorded weekly throughout the culture period. Survival rate was 87% and 84% in T1 and T2, respectively. Mean final weight were 41.73 ± 2.09g and 40.6 ± 0.90 g in T1 and T2, respectively. Length-weight relationship indicates that the growth rate was always higher in T1 followed by T2. Results showed that net yield was relatively higher in T2 (5115.35 ± 113.13 Kg/ha) than T1 (4537.12 ± 227.4 Kg/ha). In case of production, there was significant difference (p < 0.05) between two treatments. This experiment demonstrated the potential of H. fossilis production through new technique of tank culture system. However, more research is needed using local feed ingredients with higher stocking density. Bangladesh J. Zool. 47(1): 107-119, 2019

Responses to supplements by weaned lambs grazing mature pasture or eating hay in yards

1985 ◽  
Vol 25 (2) ◽  
pp. 289 ◽  
Author(s):  
M Freer ◽  
H Dove ◽  
A Axelsen ◽  
JR Donnelly ◽  
GT McKinney
Keyword(s):  
Substitution Rate ◽  
Poor Performance ◽  
Sunflower Meal ◽  
Wool Production ◽  
Grazed Pasture ◽  
Significant Difference ◽  
Ad Libitum ◽  
Stocking Rates ◽  
Daily Gain ◽  
Supplement Intake

Weaned crossbred lambs grazing mature pasture in summer at stocking rates of 14, 28 or 42 lambs/ha were supplemented for 60 days with 0, 400, 600 or 800 g/day of either sunflower meal or a 1:1 mixture of sunflower meal and oats. Mean daily gains in fasted weight without and with supplement were - 51 and 62 g, respectively, with no significant difference between the three feeding levels. Greasy wool production increased from 4.7 g/day without supplement to 9.9 g/day at the 600 or 800 g level but the composition of the supplement had no effect. Stocking rate had no effect on animal performance. It was estimated that pasture intake increased slightly with the first 400 g of supplement but fell sharply as the level increased further, with a substitution rate of 1.3. In two experiments, yarded lambs were offered oaten or lucerne hay ad libitum and mixtures of sunflower meal and oats at levels from 400 g/day to ad libitum. Mean daily gain in fasted weight increased from about 140 to about 190 g/day over this range of supplementation and greasy wool production from about 9 to about 10 g/day. In one experiment weight gain and wool production were significantly lower with a 1:6 mixture of sunflower meal and oats than with a 1:2 mixture and the same trend was shown in the other experiment. Measurements of intake showed that the substitution rate for both types of hay was only about 0.5. Comparisons of the animals' estimated requirements and intake in all three experiments indicated that the relatively poor performance of grazing animals was due to the very high substitution rate for grazed pasture at levels of supplement intake above 400 g/day.

In vitro efficacy of ganciclovir against feline herpesvirus type 1 and assessment of ocular tolerability in healthy cats

2020 ◽  
pp. 1098612X2094436
Author(s):  
Andrew C Lewin ◽  
Chin-Chi Liu ◽  
Christopher Alling ◽  
Pilar Camacho-Luna ◽  
Bruna Miessler ◽  
...  
Keyword(s):  
Blood Chemistry ◽  
Ocular Disease ◽  
Herpesvirus Type ◽  
Significant Difference ◽  
Feline Herpesvirus ◽  
Before And After ◽  
Clinically Significant ◽  
Complete Blood Counts ◽  
Ocular Tolerability

Objectives Feline herpesvirus-1 (FHV-1) is a prevalent cause of ocular disease in cats and limited topical options for treatment currently exist. The first objective of this study was to confirm the efficacy of ganciclovir against FHV-1 in vitro. The second objective was to assess the safety and ocular tolerability of topically applied ganciclovir eye gel (GEG) in healthy cats. Methods FHV-1 was used to infect tissue culture wells covered in maximally confluent Crandall–Rees feline kidney cells prior to the addition of three molarities of ganciclovir (8.9 µM, 17.8 µM and 89 µM) before being incubated for 48 h. Ganciclovir efficacy in vitro was then assessed using standard plaque reduction assay. Commercially available GEG (0.15%) was applied q8h to one randomly chosen eye of four healthy cats for 7 days. Commercially available lubricating eye gel (LEG) was applied to the opposite eye q8h. Complete blood counts (CBC), blood chemistry panels (CHEM) and urinalysis (UA) were performed on all cats before and after the study period. Ocular lesions were assessed daily using a standardized scheme. Results Ganciclovir led to a significant reduction in FHV-1 plaque number, area and diameter at all tested molarities in vitro. The highest molarity assessed (89 µM) caused a 100% reduction in viral plaque number. There was no significant difference in lesion scores between eyes receiving GEG and LEG. Animals remained healthy throughout the study period with CBC, CHEM and UA showing no clinically significant alterations. Conclusions and relevance Based on the in vitro results, ganciclovir appears to be effective against FHV-1 in vitro. When applied q8h as a commercial 0.15% gel to a small group of cats with normal eyes, this medication was well tolerated. Taken together, these data suggest this medication warrants further investigation in cats with ocular disease caused by FHV-1.

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