Consulta: subjectFacets:"Excretion"
Registros recuperados: 18
Data/hora: 06/06/2024 00:36:02

Оценка скорости поступления фосфатов в верхний перемешанный слой в Западном Циклоническом круговороте Черного моря
Provedor de dados: 13
Autores: Пархоменко, А. В.; Кирикова, М. В.; Ли, Р. И.
В циклоническом круговороте западной части Черного моря рассчитана суммарная скорость поступления неорганического фосфора в верхний перемешанный слой в результате гидрофизических процессов и экскреции зоопланктоном. Суммарная скорость потока фосфатов составляла в среднем 16.85 мгР.м2.сут-1. В период конвективного перемешивания вод основной  вклад в поток фосфатов вносили турбулентно-диффузионный обмен и вертикальная адвекция вод (79% от суммарной скорости).
Tipo: Journal Contribution
Palavras-chave: Фосфаты; Турбулентный обмен; Экскреция; Зоопланктон; Phosphates; Turbulent exchange; Excretion; Zooplankton Zooplankton Excretion Phosphates Zooplankton Excretion Phosphates http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_2750 http://aims.fao.org/aos/agrovoc/c_35986.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/166

Численные оценки регенерационного потока азота в открытой части Чёрного моря
Provedor de dados: 13
Autores: Пархоменко, А. В.
Рассмотрены результаты расчётов экскреции азота зоопланктоном в глубоководной области Чёрного моря. Скорость экскреции азота зоопланктоном в слое 0 – 150 м зимой варьировала от 20 до 23, весной – 34 - 59, летом – 66 – 86, осенью – 89 - 28 мгN·м–2·сут-1. Средняя величина регенерационной первичной продукции, рассчитанная относительно первичной продукции, измеренной радиоуглеродным методом, зимой составляла  24 %, весной – 49 %, летом – 91 %, осенью – 76 %, в среднем за год – 60 %. Обсуждается вопрос о роли регенерационного потока азота в формировании первичной продукции в эвфотическом слое открытой части Чёрного моря.
Tipo: Journal Contribution
Palavras-chave: Азот; Экскреция; Зоопланктон; Чёрное море; Nitrogen; Excretion; Zooplankton; Black Sea Nitrogen Excretion Zooplankton Nitrogen Zooplankton Excretion http://aims.fao.org/aos/agrovoc/c_5192 http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_2750.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/302

Экскреция фосфора зоопланктоном в Черном море
Provedor de dados: 13
Autores: Пархоменко, А. В.
Рассмотрены результаты модельных расчётов экскреции неорганического фосфора зоопланктоном в глубоководной области Чёрного моря. Величины скорости экскреции фосфатов зоопланктоном в слое 0 - 150 м зимой варьировали от 2.45 до 3.29, весной - 4.25 - 8.81, летом - 7.72 - 12.39, осенью - 13.36 - 3.77 мгР·мˉ2·сутˉ¹. Количественная оценка вклада простейших, мезопланктона и желетелого макропланктона в суммарную экскрецию фосфатов указывает на ключевую роль простейших. Вклад простейших в среднем составлял - 51 %, мезопланктона - 32 %, макропланктона - 17 %. Регенерационная первичная продукция зимой изменялась от 17 до 30 %, весной - 30 - 97 %, летом - 93 - 100 %, осенью - 44 - 100 %, в среднем за год 64 %. Обсуждается вопрос о роли "микробиальной петли" в...
Tipo: Journal Contribution
Palavras-chave: Фосфор; Экскреция; Скорость; Зоопланктон; Черное море; Phosphorus; Rate; Excretion; Zooplankton; Black sea Zooplankton Excretion Phosphorus Zooplankton Phosphorus Excretion http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_2750.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/242

Transit bacterien dans le tube digestive de la truite arc-en-ciel
Provedor de dados: 5
Autores: Lesel, R; Fauconneau, B; Alzieu, P.
The present study concerns bacterial transit in the digestive tract of rainbow trout at 13 degree C and compares fecal excretion of 4 tracers in the alimentary bolus, an inert bacterial tracer: spores of Bacillus stearothermophilus , a bacterial marker capable of multiplying in the digestive organs: Citrobacter freundii ; a tracer of the liquid phase: polyethylene glycol (PEG), a tracer of the solid phase: Cr sub(2)O sub(3). Two peaks of fecal excretion of bacterial bodies are indicated in the results, the first one taking place within the first 4 h following ingestion of the traced meal, the second peak, a hundred times more important, occurring 10 h after the meal. This two-phase mode of excretion corroborates the observations previously made. The...
Tipo: Text
Palavras-chave: Citrobacter freundii; Bacillus stearothermophilus; Bacteria; Excretion; Tracer techniques.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-995.pdf

Etude ecophysiologique de quelques mollusques bivalves
Provedor de dados: 5
Autores: Riva, A; Masse, H.
Using an experimental flowing system, the filtration rate of Mytilus galloprovincialis, Ostrea edulis, Ruditapes decussatus and Ruditapes aureus has been measured by an indirect technique under Mediterranean thermal conditions in coastal open sea. The oxygen consumption and excretion rate of ammonia have been estimated and influence of temperature and salinity tested for M. galloprovincialis . The results are discussed and compared to literature data.
Tipo: Text
Palavras-chave: Ruditapes decussatus; Ostrea edulis; Mytilus galloprovincialis; Bivalvia; Respiration; Excretion; Oxygen consumption; Water filtration; Ecophysiology; Méditerranéee; Excrétion; Respiration; Filtration; Bivalves.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1177.pdf

Nitrogenous and phosphorous waste production in a flow-through land-based farm of European seabass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Lemarie, Gilles; Martin, Jean-louis; Dutto, Gilbert; Garidou, C.
A study on nitrogenous and phosphorous waste production in European seabass (Dicentrarchus labrax) was carried out in a flow-through land-based farm. The main objectives were (i) to calculate nitrogenous (N) and phosphorous (P) waste production (particulate and dissolved) from in situ measurements for different rearing ponds with specific fish biomasses, fish sizes and flow rates, (ii) to establish nitrogenous and phosphorous waste production budgets, ratios and equations, and (iii) to compare, for the whole farm, in situ measurements to estimate N and P waste production from waste equations. Waste production was manifest by an increase in concentrations of total ammonia nitrogen, total Kjeldhal nitrogen, particulate nitrogen, dissolved phosphorus and...
Tipo: Text
Palavras-chave: Fish farm waste; Excretion; Nitrogenous budget; Phosphorous budget; Dicentrarchus labrax.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/publication-872.pdf

Relations trophiques entre huitre et milieu; influence de la concentration et de la taille des particules
Provedor de dados: 5
Autores: Filia, M; Copello, M; Colomines, J.
At 15 degree C, different concentrations of Phaeodactylum tricornutum are given to Crassostrea gigas . Ingestion, filtration, respiration, ammonia excretion have been measured. All ecophysiological response, except dissolved excretion, are dependent of food concentration. Energy balances have been determined and selectivity of particle size observed.
Tipo: Text
Palavras-chave: Crassostrea gigas; Bivalvia; Phaeodactylum tricornutum; Algae; Diets; Excretion; Respiration; Water filtration; Ingestion; Particle size; Energy balance; Food availability; Ecophysiology; Bilan énergétique; Ecophysiologie; Huître.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1178.pdf

Comparison of brown trout (Salmo trutta) reared in fresh water and sea water to freshwater rainbow trout (Oncorhynchus mykiss) .1. Growth and nitrogen balance
Provedor de dados: 5
Autores: Dosdat, Antoine; Metailler, Robert; Desbruyeres, Elisabeth; Huelvan, Christine.
Brown trout and rainbow trout (average weight 100 g) were reared in fresh water at 12 degrees C under the same conditions before transfer of brown trout to sea water, in order to compare nitrogen utilisation in the two species. Apparent protein digestibility (ADC), nitrogen (ammonia and urea) excretion, protein productive value (PPV) and actual observed nitro en mass balance were determined. Rainbow trout raised in fresh water had a higher growth rate (1.1 vs 0.8%. d(-1)), better food conversion ratio (0.7 vs 1.0), better ADC (91 vs 85%) and PPV (45 vs 35%) and lower ammonia excretion rates than brown trout reared in fresh water. Transferring brown trout to sea water induced lower PPV (30%) and ammonia and urea excretion. Salinity did not modify metabolic...
Tipo: Text
Palavras-chave: Truite commune; Truite arc-en-ciel; Excrétion; Ammoniaque; Urée; Digestibilité; Croissance; Rétention protéique; Rainbow trout; Brown trout; Excretion; Ammonia; Urea; Digestibility; Growth; Protein productive value.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00188/29885/28342.pdf

Effect of dietary protein level on growth and energy utilization by Litopenaeus stylirostris under laboratory conditions
Provedor de dados: 5
Autores: Gauquelin, F; Cuzon, Gerard; Gaxiola, G; Rosas, C; Arena, L; Bureau, D; Cochard, Jean-claude.
A study was conducted using a bioenergetics approach to generate information on energy requirement and feed utilization of Litopenaeus stylirostris. Animals (initial mean weight 21 +/- 1 g were fed ad libitum six experimental diets, ranging from 25 to 58% crude protein (CP), for 50 days.   Weight gain increased from 21 to 30 g with increasing dietary protein level. Survival rates averaged 80%. Basal metabolism (HeE) and heat increment of feeding (HiE) were monitored using respirometry. HeE was on average I U shrimp(-1) day(-1) or 47 U kg live weight(-1) day (22 kJ/kg(0.8). d(-1)), slightly more than what is observed in fish. HiE averaged 0.2 W/sbrimp(-1) day(-1) or 10 W kg live weight(-1) day(-1) (4 kJ/kg(0.8) d(-1)). It represented 3 1 % and 12%...
Tipo: Text
Palavras-chave: Respiration; Excretion; Growth; Dietary protein; L. stylirostris.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-6263.pdf

Voluntary feed intake, nitrogen and phosphorus losses in rainbow trout (Oncorhynchus mykiss) fed increasing dietary levels of soy protein concentrate
Provedor de dados: 5
Autores: Medale, Francoise; Boujard, Thierry; Vallee, Frédéric; Blanc, Denise; Mambrini, Muriel; Roem, Arjen; Kaushik, Sadasivam.
High energy extruded diets were formulated to contain the same level of protein supplied either by soy protein concentrate (SPC) or fish meal. Three experiments were performed in order to measure voluntary feed intake and feed waste, faecal losses and soluble losses of nitrogen and phosphorus in rainbow trout (average body weight: 100 g). Voluntary feed intake and growth performance of fish fed with demand feeders were not different when diets contained 0, 50 or 75 % SPC instead of fish meal. Total replacement of fish meal by SPC led to a significant decrease in feed intake and resulted in poor growth. This was partly due to methionine deficiency in the SPC based diet. With the addition of crystalline DL-methionine in the diets, an improvement of feed...
Tipo: Text
Palavras-chave: Digestibilité; Excrétion; Azote; Phosphore; Protéine de soja; Ingestion volontaire; Truite arc-en-ciel; Digestibility; Excretion; Nitrogen; Phosphorus; Soy protein; Voluntary feed intake; Rainbow trout.
Ano: 1998
URL: https://archimer.ifremer.fr/doc/1998/publication-871.pdf

Contribution of dietary arginine to nitrogen utilisation and excretion in juvenile sea bass (Dicentrarchus labrax) fed diets differing in protein source
Provedor de dados: 5
Autores: Tulli, F; Vachot, Christianne; Tibaldi, E; Fournier, Vincent; Kaushik, Sadasivam.
The role of dietary arginine in affecting nitrogen utilisation and excretion was studied in juvenile European sea bass (Dicentrarchus labrax) fed for 72 days with diets differing in protein sources (plant protein-based (PM) and fish-meal-based (FM)). Fish growth performance and nitrogen utilisation revealed that dietary Arg surplus was beneficial only in PM diets. Dietary Arg level significantly affected postprandial plasma urea concentrations. Hepatic arginase activity increased (P &lt; 0.05) in response to dietary Arg surplus in fish fed plant protein diets; conversely ornithine transcarbamylase activity was very low and inversely related to arginine intake. No hepatic carbamoyl phosphate synthetase III activity was detected. Dietary arginine levels did...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Sea bass; Excretion; Arginase; Urea; Arginine.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-6317.pdf

Comparison of brown trout (Salmo trutta) reared in fresh water and sea water to freshwater rainbow trout (Oncorhynchus mykiss): II. Phosphorus balance
Provedor de dados: 5
Autores: Dosdat, Antoine; Metailler, Robert; Desbruyeres, Elisabeth; Huelvan, Christine.
Brown trout and rainbow trout (average weight 100 g) were reared in fresh water at 12 degrees C under the same conditions before transferring brown trout to sea water, in order to compare phosphorus utilisation in both species. Apparent phosphorus availability, orthophosphate excretion and phosphorus accretion in the fish were directly determined. Thus, actual phosphorus mass balance was built. Rainbow trout raised in fresh water had a higher phosphorus retention coefficient (maximum 50 %) than brown trout reared in fresh water (maximum 45 %). Transferring brown trout to sea water induced a reduction in phosphorus retention (maximum 39 %), Orthophosphate excretion, ranging 7-20 mg phosphorus per kg wet weight per day, represented 10-20 % of ingested...
Tipo: Text
Palavras-chave: Oncorhynchus mykiss; Salmo trutta; Excrétion; Digestibilité; Phosphore; Oncorhynchus mykiss; Salmo trutta; Excretion; Digestibility; Phosphorus intake.
Ano: 1998
URL: https://archimer.ifremer.fr/doc/1998/publication-876.pdf

Effect of Fouling on Feeding, Oxygen Consumption and Waste Excretion of Pearl Oyster Pinctada martensii in Daya Bay Cultivation.
Provedor de dados: 20
Autores: Su, Zhenxia; Yan, Yan; Huang, Liangmin.
Biofouling is a particular problem in the pearl oyster culture. It may reduce the growth and survival rates of the cultured species. Foulers are often themselves filter feeders, and are therefore potential competitors for food resource with the cultured species. Fouling organisms may also reduce the oxygen supply. A study was conducted to measure the impact of foulers on feeding, oxygen consumption, and waste excretion. POM, ammonia, phosphate and oxygen concentration were measured in various treatments (cultured species，foulers). This study showed that fouling organisms had significant effect on food uptake, oxygen consumption and waste excretion. The clearance rate, ammonia and phosphate release rate, oxygen consumption rate of the fouled pearl oyster...
Tipo: Journal Contribution
Palavras-chave: Pearl oysters; Foulers; Oxygen consumption; Excretion.
Ano: 2007
URL: http://hdl.handle.net/1834/5861

Phytase in diets for Nile tilapia in the growth period
Provedor de dados: 96
Autores: Bock,Claudio Luiz; Pezzato,Luiz Edivaldo; Cantelmo,Osmar Angelo; Barros,Margarida Maria.
This research was carried out to compare the effect of phytase on performance, in the incorporation and excretion phosphorus in Nile tilápia. Four diets were used: one standard (contol), composed by 3,200 DE kcal ED/kg of ration and 30.0% CP and supplemented with phosphorus (4.0% of dicalcium phosphate), considering the treatment control, and others three, without phosphorus supplementation, with different phytase levels (1,000, 1,500, and 2,000 uf/kg), with four replication, per a period of 82 days. Circular tanks of fiber glass, with constant flow and aeration were used. The results demonstrated that the use of phytase in diets for fish production can reduce the levels of inorganic phosphorus in the diets and minimizing the impacts caused by phosphorus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Excretion; Fish; Growth; Oreochromis niloticus; Phosphorus; Pollution.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000700001

Strategies for mitigation of nitrogen environmental impact from swine production
Provedor de dados: 96
Autores: Monteiro,Divanildo Outor; Pinheiro,Victor Manuel Carvalho; Mourão,José Luís Medeiros; Rodrigues,Miguel António Machado.
This work presents strategies that can be implemented in order to minimize the environmental impact of swine slurry on soil, water, and air. This reduction can be achieved through decrease in nitrogen excretion and ammonia emissions. The correct feed formulation according to animal requirements, the increase in diet digestibility and improvement in animal performance can reduce nitrogen excretion. The use of additives either in the diet or in the manure as well as some equipment rearrangements can reduce ammonia emission.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Excretion; Emissions; Environment; Nitrogen; Swine.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300035

Honeydew foraging by birds in an Atlantic Forest fragment of Minas Gerais State, Brazil
Provedor de dados: 49
Autores: Teixeira,Fagner Daniel; Azevedo,Fernando Cesar Cascelli de.
Honeydew foraging by birds has been extensively documented in recent years. However, this interaction has been poorly documented in Brazil, with predominance of few species of birds foraging only in Mimosa scabrella trees. With the objective of describing the behavior of birds interacting with scale insects associated with trees, we conducted a study at the Serra de São José, Tiradentes, in the State of Minas Gerais, Brazil. Observations were recorded from June to July 2012. We observed 13 species of birds feeding on honeydew scale insects, eight never previously recorded. We observed individuals using aerial and surface maneuvers to collect the honeydew on the branches or reaching the droppings below the branches. These species were observed foraging...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trophic connections; Excretion; Insects; Behavior maneuvers; Serra de São José.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400391

Efeito de sedimentos contaminados sobre a excreção de nitrogênio do camarão Penaeus paulensis
Provedor de dados: 52
Autores: Moraes,Rosane B.C.; Pfeiffer,Wolfgang C.; Guimarães,Jean R.; Borges,Alexandre Luiz N.; Campos,Alexandre N.
Physiological response (ammonia excretion) of the shrimp Penaeus paulensis exposed to contaminated sediments of Guanabara Bay and Sepetiba Bay (Rio de Janeiro - Brazil), was monitored for 52 days. The toxicity tests were conducted in aquarium with a water feedback system and a sediment layer of 2 cm. The sediment from Saco do Engenho (Sepetiba Bay) was the most toxic, affecting the excretion of P. paulensis. In sediment from Sepetiba Bay the ammonia excretion was significantly enhanced after 10 days (S. Engenho) and 52 days (I. Madeira) of exposition.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sediment; Toxicity; Excretion; Penaeus.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400012

Excretion of Brucella abortus vaccine B19 strain during a reproductive cycle in dairy cows
Provedor de dados: 58
Autores: Pacheco,W. A.; Genovez,M. E.; Pozzi,C. R.; Silva,L. M. P.; Azevedo,S. S.; Did,C. C.; Piatti,R. M.; Pinheiro,E. S.; Castro,V.; Miyashiro,S.; Gambarini,M. L.
This paper aimed to determine the excretion period of B19 vaccine strain during a complete reproductive cycle (from estrus synchronization, artificial insemination, pregnancy and until 30 days after parturition) of dairy cows from 3 to 9 years old that were previously vaccinated from 3 to 8 months. Three groups were monitored with monthly milk and urine collection during 12 months: G1 with seven cows from 3 to 4 years old; G2 with three cows from 5 to 6 years old; and G3 with four cows from 7 to 9 years old. Urine and milk samples were submitted to bacteriological culture and urine and PCR reactions for detection of Brucella spp. and PCR-multiplex for B19 strain identification. Ring test (RT) was also performed in the milk samples, and serum samples were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine brucellosis; Vaccination; B19 vaccine; Excretion.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200022