Consulta: subjectFacets:"Intensive rearing"
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Data/hora: 08/06/2024 13:30:52

Effets de l'apport de phytoplancton (Skeletonema costatum) sur la croissance et les variations de la composition biochimique de la palourde japonaise Ruditapes philippinarum cultivée en marais
Provedor de dados: 5
Autores: Baud, Jean-pierre; Haure, Joel; Garnier, Jacqueline.
A bulk production of phytoplankton (Skelelonema costatum) has been obtained in concrete tanks from saline groundwater. This was used in various concentrations to feed an intensive cultivation of the Manila clam (Ruditapes philippinarum) in ponds. No difference was observed in growth rates of molluscs, with food concentrations between 31 to 126 µg/l Chl a. However, the growth rates obtained from March to November with a food supplement were 1.5 times higher than those observed in the traditional, extensive cultivation. The biomass doubled and the increase in flesh dry weight was 2.5 times higher. The condition index reached a value of 100 in the intensive cultivation. During growth, the proximate composition analysis revealed that the lipid and carbohydrate...
Tipo: Text
Palavras-chave: Ruditapes philippinarum; Skeletonema costatum; Elevage intensif; Claire; Croissance; Composition biochimique; Ruditapes philippinarum; Skeletonema costatum; Intensive rearing; Pond; Growth; Biochemical changes.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00039/14980/12307.pdf

Intensive culture of the Manila clam (Ruditapes philippinarum) in marine ponds. The impact of rearing densities and feeding levels on growth rates and yields
Provedor de dados: 5
Autores: Baud, Jean-pierre; Haure, Joel; Bodoy, Alain.
Intensive ongrowing (from 28 mm to the commercial size, 35 mm) of the Manila clam Ruditapes philippinarum was studied in experimental raceways with a natural bottom of clay. The factors controlled were rearing density (100, 200, and 300 individuals/m2) and food concentration (34.0 and 68.1 µg.1-1 chlorophyll a). Food was produced from a batch culture of Skeletonema costatum in a large volume (50 m3), thanks to the fertile ground and saline water. Best results regarding final size were obtained in the vicinity of the inflow with a densilY of 100 individuals/m2. However it was a density of 300 individuals/m2 which appeared from the following results to be the optimal choice for intensive rearing: the survival rate was 84 %, the final biomass was 4 kg/m2 and...
Tipo: Text
Palavras-chave: Ruditapes philippinarum; Skeletonema costatum; Elevage intensif; Marais maritime; Croissance; Rendement; Ruditapes philippinarum; Skeletonema costatum; Intensive rearing; Marine pond; Growth rate; Yield.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00038/14950/12276.pdf

Modélisation de la croissance de Ruditapes philippinarum dans un système expérimental
Provedor de dados: 5
Autores: Bensch, Alexis; Bacher, Cedric; Baud, Jean-pierre; Martin, Jean-louis.
The growth of Ruditapes philippinarum was modeled with an energetic budget equation. Clams were fed with Skeletonema costatum in experimental units during 6 months. The filtration and respiration terms of the budget were depending on the temperature and the dry weight. The spawning effort was represented by an allometric relation derived from the experimental data. The model simulated the individual growth of the dry weight and of the shell converted into energy during the 6 months of the experiment. The results fitted well with the observations until the loss of energy due to the spawning. After that period the model overestimated the growth which was explained by another spawning loss not taken into account in the model and not noticeable with the...
Tipo: Text
Palavras-chave: Intensive rearing; Spawning; Sensitivity analysis; Ruditapes philippinarum; Energetic modeling; Elevage intensif; Ponte; Analyse de sensibilité; Ruditapes philippinarum; Modéle énergétique.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-3062.pdf

L'élevage larvaire intensif du loup Dicentrarchus labrax. Influence de la lumière, de la densité en proies et de la température sur l'aluminium, sur le transit digestif et sur les performances zootechniques
Provedor de dados: 5
Autores: Ronzani Cerqueira, Vinicius.
Several sea bass-rearing experiments were performed from hatching trough metamorphosis. The rearing units employed were 500 1 polyester tanks, where flow rate and temperature of seawater, light and suitable food (rotifer and artemia) were controlled. Stock density ranged between 50 and 100 larvae per liter.  Individuals held in tanks with internal black walls developed faster and had a greater survival rate than those in white tanks. This suggests that a better contrast between preys and background assists the larvae to see food organisms more clearly.  The sea bass larvae search for food is based only in vision and not trought mechanoreceptors or chemoreceptors. It was very difficult to evaluate the light intensity (50-5000 lux) influence on feeding,...
Tipo: Text
Palavras-chave: Food; Prey; Light; Zootechnical; Digestive transit; Temperature; Dicentrarchus labrax; Intensive rearing; Sea bass.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/these-1676.pdf

Factors that Influence the Production, Environment, and Welfare of Broiler Chicken: A Systematic Review
Provedor de dados: 89
Autores: Baracho,MS; Nääs,IA; Betin,PS; Moura,DJ.
ABSTRACT The objective of the present study was to characterize the scientific production regarding the factors that influence broiler chicken production, and that were published from 2000 to 2015 in journals indexed in the database of Google Scholar, Scielo, and ScienceDirect. The research was done in the Thermal Comfort Laboratory at FEAGRI- UNICAMP, and the concept of the systematic review was applied. The research criterion was initially defined (the keywords) aiming to identify and evaluate the variables that describe the experimental characteristics and the animals. The primary keywords identified were: broiler chicken from commercial strains, broiler production, rearing conditions, thermal environment, air quality, acoustic environment, light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Intensive rearing; Poultry housing.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300617

Taxa alimentar no desempenho de juvenis de robalo-peva em tanque-rede - doi: 10.4025/actascianimsci.v33i4.11413
Provedor de dados: 2
Autores: Barbosa, Moysés Cavichioli; Universidade Federal de Santa Catarina; Neves, Fábio de Fárias; Universidade Federal de Santa Catarina; Cerqueira, Vinicius Ronzani; Universidade Federal de Santa Catarina.
O conhecimento da taxa ótima de alimentação para uma determinada espécie não só é importante para promover o maior crescimento e a melhor eficiência na alimentação, mas também para prevenir a deterioração de qualidade de água como resultado do excesso de alimento. O presente estudo teve como objetivo avaliar o desempenho do robalo-peva, Centropomus parallelus cultivado em tanques-rede flutuantes sob o efeito de diferentes taxas alimentares (1; 1,5; 2 e 2,5% da biomassa ao dia e a taxa controle que foi até a saciedade), em condições de cultivo no ambiente natural. Durante 40 dias, cada tratamento foi avaliado em triplicatas e foram verificados os parâmetros biológicos (sobrevivência, taxa de crescimento específico, peso e comprimentos médios finais) e...
Tipo: Criação em condições naturais
Palavras-chave: 5.06.03.00-0 Alimentação; Centropomus parallelus; Crescimento; Cultivo intensivo; Piscicultura Centropomus parallelus; Feeding; Fish culture; Growth; Intensive rearing.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11413