Consulta: creatorFacets:"Boujard, Thierry"
Registros recuperados: 12
Data/hora: 02/06/2024 06:46:40

Voluntary feed intake and discrimination of diets containing a novel fluoroquinolone in self-fed rainbow trout
Provedor de dados: 5
Autores: Boujard, Thierry; Le Gouvello, Raphaela.
The objective of the study was to evaluate the capacity of rainbow trout to discriminate diets containing micro-granulated or powdered novel fluoroquinolone in comparison with a positive (containing sulfamerazine sodium) and a negative control (placebo). In a first trial, groups of trout had access to a self-feeder containing the placebo feed for 10 days, and then to one of the four feeds during another period of 10 days. Fish reduced their voluntary feed intake (VFI) by more than 50 % when they had access to the positive control, and by more than 20 % when they had access to feed containing micro-granulated premix. There was no significant decrease in VFI when the fish had access to feed containing powdered premix, but in this latter case, an increase in...
Tipo: Text
Palavras-chave: Truite arc-en-ciel; Distributeurs à la demande; Appétit; Acceptabilité; Antibiotiques; Oncorhynchus mykiss; Rainbow trout; Self-feeding; Voluntary feed intake; Antibiotics.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00335/44651/57341.pdf

The culture of Hoplosternum littorale : State of the art and perspectives
Provedor de dados: 5
Autores: Luquet, P; Boujard, Thierry; Planquette, P; Moreau, Y; Hostache, G.
Hoplosternum littorale is a siluriform fish of very high commercial value in some countries of South America. Some biological characteristics as easy spawning in confinement and good tolerance of low oxygen level make it easy to cultivate.
Tipo: Text
Palavras-chave: Fish ponds; Incubation; Brood stocks; Circadian rhythms; Sexual maturity; Sex ratio; Rearing; Respiration; Survival; Diets; Larvae; Fecundity; Hatching; Oxygen; Feeding behaviour; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1491.pdf

Effect of past nutritional history and fasting on feed intake and growth in rainbow trout Oncorhynchus mykiss
Provedor de dados: 5
Autores: Boujard, Thierry; Burel, Christine; Medale, Francoise; Haylor, Graham; Moisan, Annick.
Groups of juvenile rainbow trout were fed to satiation for 10 days after 1, 11 and 21 days of feed deprivation. These fish (initial body weight =20 +/- 2 g) were previously fed at different feeding levels (0.5 or 1.5% initial body weight, to satiation) with a high (20.4 kJ . g(-1)) or a low (16.2 kJ.g(-1)) digestible energy diet content for 34 days. It is shown that past nutritional history affected growth performance: duration of feed deprivation has a major effect on intake and feed conversion efficiency; previous feeding level has an effect on intake; dietary energy content affected feed conversion efficiency. In addition, an attempt was made to identify some of the metabolic parameters that could be involved in the increase in growth performance during...
Tipo: Text
Palavras-chave: Feed efficiency; Appetite; Past nutritional history; Compensatory growth; Aquaculture.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-1399.pdf

Comparison of two methods for evaluating waste of a flow through trout farm
Provedor de dados: 5
Autores: Roque D'Orbcastel, Emmanuelle; Blancheton, Jean-paul; Boujard, Thierry; Aubin, Joel; Moutounet, Yves; Przybyla, Cyrille; Belaud, Alain.
European water legislation enforces increasingly restrictive measures with regards to reduction of water consumption and waste emission in order to minimise the potential environmental impact of the agro industry sector. Fish farms are particularly concerned, but legislation covering effluent discharge varies significantly from country to country. However, recommendations and directives from institutional, national or regional bodies suggest the enforcement of increasingly strict waste reduction measures and the development of waste treatment. Before treatment, it is necessary to evaluate waste production in terms of composition and quantity. The waste quantification methods used today for fish culture systems are either based on direct measurements of...
Tipo: Text
Palavras-chave: Phosphorus; Nitrogen; Suspended solids; Trout farm; Waste.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6822.pdf

Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria
Provedor de dados: 5
Autores: Grima, Laure; Quillet, E; Boujard, Thierry; Robert Granie, C; Chatain, Beatrice; Mambrini, M.
Little is known about the genetic basis of residual feed intake (RFI) variation in fish, since this trait is highly sensitive to environmental influences, and feed intake of individuals is difficult to measure accurately. The purpose of this work was (i) to assess the genetic variability of RFI estimated by an X-ray technique and (ii) to develop predictive criteria for RFI. Two predictive criteria were tested: loss of body weight during feed deprivation and compensatory growth during re-feeding. Ten heterozygous rainbow trout clones were used. Individual intake and body weight were measured three times at three-week intervals. Then, individual body weight was recorded after two cycles of a three-week feed deprivation followed by a three-week re-feeding....
Tipo: Text
Palavras-chave: Selection; Indirect criteria; Residual feed intake; Clone; Rainbow trout.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4777.pdf

Typology of individual growth in sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Gardeur, J; Lemarie, Gilles; Coves, Denis; Boujard, Thierry.
The individual growth variability of passive integrated transponder tagged sea bass was studied using data sets from two different experiments. In experiment 1 (n = 485), fish submitted to different photoperiod regimes were held in fourteen groups of individual weight of 88 ± 13 g (mean ± SD). In experiment 2 (n = 748, initial weight 243 ± 30 g) fish were held in fifteen groups and had either free or restricted access to diets with three lipid levels. After adjustment for treatment and tank effects, individual growth curves were analysed using multivariate analysis (principal component analysis and clustering) and were modelled using the summary statistics technique. Different growth profiles where characterized. All of them appeared to be curvilinear....
Tipo: Text
Palavras-chave: Variability; Typology; Sea bass; Modelling; Growth curves; Variabilité; Typologie; Bar; Modélisation; Courbes de croissance.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-548.pdf

Effects of rapeseed meal-glucosinolates on thyroid metabolism and feed utilization in rainbow trout
Provedor de dados: 5
Autores: Burel, Christine; Boujard, Thierry; Kaushik, Sadasivam; Boeuf, Gilles; Mol, K; Van Der Geyten, S; Darras, V; Kuhn, E; Pradet Balade, B; Querat, B; Quinsac, A; Krouti, M; Ribaillier, D.
Two rapeseed meals (RM1 and RM2), containing glucosinolates at a concentration of 26 and 40 mumol/g, respectively, were incorporated at increasing levels (10, 20, and 30% for RM1 and 30 and 50% for RM2) in diets of juvenile rainbow trout. Disturbances in the thyroid axis appeared after 14 days of feeding (with a dietary incorporation level of 10%). The dietary supplementation with T-3 or iodine induced an increase in plasma T-3 levels, compared to that in fish fed the RM diets, and reduced the deleterious effect of RM on growth. When trout were reared in seawater, there was also a slight increase in thyroid hormone levels. TSH treatment had no effect on the thyroid hormone plasma levels. The incorporation of 30% of RM1, which induced a lower dietary...
Tipo: Text
Palavras-chave: Rainbow trout; Iodine; TSH; Deiodinase activity; Thyroid function; Growth; Glucosinolates; Rapeseed.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-677.pdf

Regulation of feed intake, growth, nutrient and energy utilisation in European sea bass (Dicentrarchus labrax) fed high fat diets
Provedor de dados: 5
Autores: Boujard, Thierry; Gelineau, Anne; Coves, Denis; Corraze, Genevieve; Dutto, Gilbert; Gasset, Eric; Kaushik, Sadasivam.
Three practical isoproteic (54% protein) diets were formulated to contain graded levels of crude fat (diet L: 10%, diet M: 20% and diet H: 30%). Each diet was assigned unrestrictedly to three and restrictedly to two replicate groups of fish (IBW 243 g). In unrestricted groups, increasing the dietary lipid level led to a significant decrease in voluntary feed intake without affecting growth rate. In the feed-restricted groups, daily growth rates increased with increasing dietary fat levels. There was a significant and inverse effect of the dietary fat content on whole body moisture and fat levels, with highest lipid (ca. 20%) and lowest moisture (ca. 58%) contents in sea bass fed diet containing the highest lipid level; muscle lipid concentration was...
Tipo: Text
Palavras-chave: Phosphorus excretion; Feed intake; Lipid; Digestible energy; European sea bass; Dicentrarchus labrax.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-392.pdf

Effect of feeding time on digestibility, growth performance and protein metabolism in the rainbow trout Oncorhynchus mykiss: interactions with dietary fat levels
Provedor de dados: 5
Autores: Bolliet, Valérie; Cheewasedtham, Chonlatee; Houlihan, Dominic; Gelineau, Anne; Boujard, Thierry.
The effect of feeding time was studied in rainbow trout fed different dietary levels of fat. Fish were fed either 1 h after light on in the morning or 1 h after light off in the evening with a low energy diet (LE, 6 % lipid) or a high energy diet (HE, 23 % lipid). Regardless of the diet, apparent digestibility and post prandial protein synthesis were higher in fish fed in the morning than in those fed at the beginning of the night. In fish fed the LE diet in the morning, growth performance and nutrient retention efficiency tended to be higher than in those fed at the beginning of the night. In contrast, fish fed the HE diet in the morning had lower protein growth rate, protein content and protein retention efficiency than those fed in the evening. These...
Tipo: Text
Palavras-chave: Protein metabolism; Digestibility; Feeding time; Dietary fat level; Aquaculture; Métabolisme protéique; Digestibilité; Heure d'alimentation; Taux de lipides alimentaires; Aquaculture.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-543.pdf

The combined effects of feeding time and dietary fat levels on feed intake, growth and body composition in rainbow trout
Provedor de dados: 5
Autores: Gelineau, Anne; Bolliet, Valérie; Corrraze, Geneviève; Boujard, Thierry.
The combined effects of feeding time (morning and evening) and dietary fat concentration on feed intake, growth, body composition and lipid tissue distribution were examined in rainbow trout fed on demand. To that purpose, diets with low (LE, 6% lipid) or high energy concentrations (HE, 24% lipid) were used in four treatments that combined provision of the same (HE-HE or LE-LE) or different (HE-LE, LE-HE) diets at morning and evening meals. Digestible energy intakes of the LE-HE (229 U kg(-1) d(-1)) and HE-HE (269 U kg(-1) d(-1)) groups were significantly different. There was no significant difference in the amount of energy intake between the two meals of the day in any of the treatments. The main effect of dietary treatment was on lipid intake; fish in...
Tipo: Text
Palavras-chave: Oncorhynchus mykiss; Body composition; Feed intake; Growth; Lipid; Feeding time.
Ano: 2002
URL: https://archimer.ifremer.fr/doc/2002/publication-1398.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

Can turbot, Psetta maxima, be fed with self-feeders?
Provedor de dados: 5
Autores: Burel, Christine; Robin, Jean; Boujard, Thierry.
The capability of turbots to use self-feeders was studied using 3 groups of 100 juveniles. Feeding activity reached a plateau after 20 days. Almost all feeding activity was observed during the photophase, and the acrophase was associated with dawn. The proportion of nocturnal demands was the highest in the replicate with the lowest feed efficiency, suggesting that feed waste was mainly occurring during nocturnal feeding activity. During the last 30 days of the experiment, demands were only rewarded during two periods of 2.5 h.day(-1). Feed efficiency was improved and was homogeneous between the three tanks, but the voluntary feed intake was reduced. It is concluded that turbots are able to use self-feeders but they do not adapt quickly, and they are not...
Tipo: Text
Palavras-chave: Turbot; Self-feeders; Feeding behaviour; Feeding rhythms.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00335/44652/57339.pdf