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A physiological and biochemical approach to selecting the ideal diet for Ostrea edulis (L.) broodstock conditioning (part A) ArchiMer
Gonzalez-araya, Ricardo; Queau, Isabelle; Quere, Claudie; Moal, Jeanne; Robert, Rene.
To select the best microalgae for Ostrea edulis conditioning, four single species diets were fed to batches of broodstock, which were then compared using physiological and biochemical approaches. Ingestion and absorption were first studied, showing that Chaetoceros gracilis and Skeletonema marinoï were efficiently ingested (4.9–5.3 mg g−1 h−1) and absorbed (1.9–2.5 mg g−1 h−1) while Tetraselmis suecica led to the lowest physiological responses (0.36 and 0.12 mg g−1 h−1 respectively). When O. edulis were fed any microalgae except T-ISO with only 79 mg g−1, gonads accumulated carbohydrates from 116 to 141 mg g−1 and the extent of accumulation depended on the species supplied in the order T. suecica<C. gracilis<S. marinoï. When oysters were fed either...
Tipo: Text Palavras-chave: Ostrea edulis; Conditioning; Algal diets; Ingestion; Absorption; Biochemical composition.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00033/14449/11748.pdf
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Association among growth, food consumption-related traits and amylase gene polymorphism in the Pacific oyster Crassostrea gigas ArchiMer
Huvet, Arnaud; Jeffroy, F; Fabioux, C; Daniel, Jean-yves; Quillien, Virgile; Van Wormhoudt, A; Moal, Jeanne; Samain, Jean-francois; Boudry, Pierre; Pouvreau, Stephane.
To examine further a previously reported association between amylase gene polymorphism and growth in the Pacific oyster Crassostrea gigas, ecophysiological parameters and biochemical and molecular expression levels of alpha-amylase were studied in Pacific oysters of different amylase genotypes. Genotypes that previously displayed significantly different growth were found to be significantly different for ingestion and absorption efficiency. These estimated parameters, used in a dynamic energy budget model, showed that observed ingestion rates (unlike absorption efficiencies) allowed an accurate prediction of growth potential in these genotypes. The observed association between growth and amylase gene polymorphism is therefore more likely to be related to...
Tipo: Text Palavras-chave: Ingestion; Gene expression; Bivalve; Alpha amylase.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-5165.pdf
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Calculations of results in grazing experiments using the counting method OMA
Tackx, M.L.M.; Van de Vrie, E.M..
Different formulae used in the literature for calculation of ingestion rates are reviewed. Their applicability is discussed in relation to two criteria: the occurrence of saturation of the feeding and/or growth of the food particles. It is shown by simulations that the differences in results obtained by calculating ingestion following a linear or an exponential model are restricted to a few percent. Calculation of ingestion rates by substantial over- or underestimation depending on the growth constant of the food particles and the grazing time.The formula I = Vk(C<sub>zt</sub>C<sub>zo</sub>e<sup>kt</sup>)/N(I-e<sup>kt</sup>) is proposed for the calculation of ingestion rates under saturated circumstances.It...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food intake; Food intake; Grazing; Ingestion; Mathematical analysis; Measuring devices; Phytoplankton; Zooplankton.
Ano: 1985 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3212
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Comportamento ingestivo de cordeiros Morada Nova em confinamento. Repositório Alice
OLIVEIRA, D. de S.; ALVES, A. A.; ALVES, F. G. da S.; OLIVEIRA, V. S.; GUEDES, L. F.; BRITO, T. M.; POMPEU, R. C. F. F.; ROGERIO, M. C. P..
Resumo: Objetivou-se com esse estudo avaliar o comportamento ingestivo de cordeiros Morada Nova submetidos a dietas prevendo-se dois graus de maturidade conforme o NRC (2007), com ou sem restrição de nutrientes. Vinte cordeiros da raça Morada Nova foram distribuídos em delineamento inteiramente ao acaso em esquema fatorial 2x2, em dois planos nutricionais (maturidade precoce e tardia) e dois níveis de restrição proteica e energética (0 e 15%). Dietas com previsão de maturidade tardia proporcionou maior eficiência de alimentação da fibra em detergente neutro (EALFDN). Contudo, dieta com previsão de maturidade precoce e 0% em restrição de proteína e energia promoveu maior eficiência de ruminação da matéria seca (ERUMS). O resultado observado para a EALFDN na...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Eficiência alimentar; Raça Morada Nova; Ovino; Ingestão; Alimento Para Animal; Nutrição Animal; Sheep feeding; Feed intake; Ingestion.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107318
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Dietary neutral lipid level and source in marine fish larvae: Effects on digestive physiology and food intake ArchiMer
Morais, Sofia; Conceicao, L; Ronnestad, I; Koven, W; Cahu, Chantal; Zambonino, Jose-luis; Dinis, M.
A growth depressing effect of high dietary neutral lipid levels in marine fish larvae has been reported. This may be a result of a decrease in the efficiency or activity of digestive enzymes, a reduction in absorption efficiency and/or a decrease in food intake. The present work reviews recent studies carried out on commercially valuable species (Atlantic herring, Senegalese sole, European seabass and gilthead seabream) that investigated the effects of neutral lipid level and lipid source (fatty acid composition) on some of these key factors influencing larval growth. The results seem to collectively indicate that lipid transport from the enterocytes into the body may be more problematic in larval stages dealing with high neutral lipid diets than lipolytic...
Tipo: Text Palavras-chave: Ingestion; Lipid droplets; Digestion; Absorption; Fatty acid composition; Lipid quantity.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3029.pdf
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Evaluation of the impact of polyethylene microbeads ingestion in European sea bass (Dicentrarchus labrax) larvae ArchiMer
Mazurais, David; Ernande, Bruno; Quazuguel, Patrick; Severe, Armelle; Huelvan, Christine; Madec, Lauriane; Mouchel, Olivier; Soudant, P.; Robbens, J.; Huvet, Arnaud; Zambonino-infante, J..
Microplastics are present in marine habitats worldwide and may be ingested by low trophic organisms such as fish larvae, with uncertain physiological consequences. The present study aims at assessing the impact of polyethylene (PE 10-45µM) microbeads ingestion in European sea bass (Dicentrarchus labrax) larvae. Fish were fed an inert diet including 0, 104 and 105 fluorescent microbeads per gram from 7 until 43 days post-hatching (dph). Microbeads were detected in the gastrointestinal tract in all fish fed diet incorporating PE. Our data revealed an efficient elimination of PE beads from the gut since no fluorescent was observed in the larvae after 48h depuration. While the mortality rate increased significantly with the amount of microbeads scored per...
Tipo: Text Palavras-chave: Microplastic; Fish; Larvae; Ingestion; Survival.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00279/39057/37621.pdf
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Molecular Ontogeny of First-Feeding European Eel Larvae ArchiMer
Politis, Sebastian Nikitas; Sorensen, Sune R.; Mazurais, David; Servili, Arianna; Zambonino-infante, Jose-luis; Miest, Joanna J.; Clemmesen, Catriona M.; Tomkiewicz, Jonna; Butts, Ian A. E..
Digestive system functionality of fish larvae relies on the onset of genetically pre-programmed and extrinsically influenced digestive functions. This study explored how algal supplementation (green-water) until 14 days post hatch (dph) and the ingestion of food [enriched rotifer (Brachionus plicatilis) paste] from 15 dph onward affects molecular maturation and functionality of European eel larval ingestion and digestion mechanisms. For this, we linked larval biometrics to expression of genes relating to appetite [ghrelin (ghrl), cholecystokinin (cck)], food intake [proopiomelanocortin (pomc)], digestion [trypsin (try), triglyceride lipase (tgl), amylase (amyl)], energy metabolism [ATP synthase F0 subunit 6 (atp6), cytochrome-c-oxidase 1 (cox1)], growth...
Tipo: Text Palavras-chave: Anguilla anguilla; Ingestion; Digestion; Gene expression; RNA/DNA; Aquaculture.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00463/57445/59550.pdf
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Nutritional plans on the intake, digestibility, and performance of dairy heifers of different breed compositions. Repositório Alice
OLIVEIRA FILHO, C. A. A.; MACHADO, F. S.; FERREIRA, A. L.; TOMICH, T. R.; MAURÍCIO, R. M.; CAMPOS, M. M.; SILVA, C. F. P. G. da; AZEVÊDO, J. A. G. de; PEREIRA, L. G. R..
The objective of this work was to evaluate the effects of nutritional plans and breed composition on nutrient intake and digestibility, nitrogen balance, and performance of dairy heifers in tropical conditions. Thirty-six heifers - 12 Holstein, 12 Gyr, and 12 Gyrolando F1 (½ Holstein × ½ Gyr) - were housed in a tie-stall system and randomly distributed, adopting a completely randomized design in a 3×3 factorial arrangement (nutritional plans and breed composition). The diets were formulated to enable weight gains of 200, 400, and 800 g per day, corresponding to the nutritional plans 11, 14, and 19 g kg-1 body weight (BW), respectively. The intake of dry matter, fibrous fractions (g kg-1 BW-0.75), and metabolizable energy (kcal-1 BW-0.75) in the 11-g kg-1...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Balanço de nitrogênio; Ingestão; Ganho de peso; Gir leiteiro; Nitrogen; Ingestion; Nitrogen balance; Weight gain; Girolando.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102245
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Relations trophiques entre huitre et milieu; influence de la concentration et de la taille des particules ArchiMer
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
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The selection of an ideal diet for Ostrea edulis (L.) broodstock conditioning (part B) ArchiMer
Gonzalez-araya, Ricardo; Lebrun, Luc; Quere, Claudie; Robert, Rene.
Four microalgae species (Rhodomonas salina, Thalassiosira weissflogii, Thalassiosira pseudonana and Pavlova lutheri) were evaluated to estimate their potential as food for Ostrea edulis (L.) reproductive conditioning. Best ingestion and absorption were observed with R. salina (3.44 and 1.59 mg g− 1 h− 1, respectively), followed by T. pseudonana (2.75 and 0.98 mg g− 1 h− 1) and P. lutheri (2.40 and 0.91 mg g− 1 h− 1). Oysters fed T. weissflogii exhibited the lowest ingestion and absorption values (1.40 and 0.68 mg g− 1 h− 1). Proximate composition (proteins and carbohydrates) and lipid content (fatty acids and sterols) analysed in four main tissues (gonad, digestive gland, muscle and gills) also differed significantly with diet. Protein ranged from 355 mg...
Tipo: Text Palavras-chave: Ostrea edulis; Conditioning; Algal diets; Ingestion; Absorption; Biochemical composition.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00090/20092/17731.pdf
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