|
|
|
| Registros recuperados: 176 | |
|
|
| Lefevre, Sjannie; Mckenzie, David J.; Nilsson, Goran E.. |
| Some recent modelling papers projecting smaller fish sizes and catches in a warmer future are based on erroneous assumptions regarding (i) the scaling of gills with body mass and (ii) the energetic cost of 'maintenance'. Assumption (i) posits that insurmountable geometric constraints prevent respiratory surface areas from growing as fast as body volume. It is argued that these constraints explain allometric scaling of energy metabolism, whereby larger fishes have relatively lower mass-specific metabolic rates. Assumption (ii) concludes that when fishes reach a certain size, basal oxygen demands will not be met, because of assumption (i). We here demonstrate unequivocally, by applying accepted physiological principles with reference to the existing... |
| Tipo: Text |
Palavras-chave: Aerobic scope; Gill surface area; Growth; Metabolism; Oxygen consumption; Respiration; Scaling. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00395/50621/51449.pdf |
| |
|
| |
|
| |
|
|
| Macongonde,Ernesto A.; Costa,Naithan L.F.; Ferreira,Bruna K.; Biella,Mairis S.; Frederico,Marisa J.S.; Oliveira,Marcos R. de; Ávila Júnior,Silvio; Silva,Fátima R.M.B.; Ferreira,Gustavo C.; Streck,Emilio L.; Schuck,Patrícia F.. |
| Fructose accumulates in tissue and body fluids of patients affected by hereditary fructose intolerance (HFI), a disorder caused by the deficiency of aldolase B. We investigated the effect of acute fructose administration on the biochemical profile and on the activities of the Krebs cycle enzymes in the cerebral cortex of young rats. Rats received a subcutaneous injection of NaCl (0.9 %; control group) or fructose solution (5 μmol/g; treated group). Twelve or 24 h after the administration, the animals were euthanized and the cerebral cortices were isolated. Peripheral blood (to obtain the serum) and cerebral spinal fluid (CSF) from the animals were also collected. It was observed that albumin levels were decreased and cholesterol levels were increased in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brain damage; Fructose; Fructosemia; Hereditary fructose intolerance; Krebs cycle; Metabolism. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000301451 |
| |
|
|
| Girard,Christiane L.. |
| ABSTRACT Studies on B-vitamin requirements of cattle, conducted more than 60 years ago, concluded that mature ruminants do not require B-vitamin supplements because the amounts of vitamins provided by the diet and synthesized by the ruminal microflora were sufficient to prevent emergence of deficiency symptoms. As a result, the impact of subclinical deficiency on maintenance of normal and efficient metabolism has been disregarded and very little research effort has been devoted at defining dairy cow requirements for B vitamins. However, emergence of deficiency symptoms is the last stage of the deficiency; deficiency appears as soon as the supply is inferior to the needs, leading to a loss of metabolic efficiency. As B vitamins play critical roles in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: B-vitamin; Dairy cow; Metabolism; Requirement; Rumen. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000700614 |
| |
|
|
| Gomide,Elisangela Minati; Rodrigues,Paulo Borges; Zangeronimo,Márcio Gilberto; Bertechini,Antônio Gilberto; Santos,Luziane Moreira dos; Alvarenga,Renata Ribeiro. |
| The objective of this study was to evaluate the effect of reduced-crude protein (CP) and available phosphorus (aP) diets, added with phytase and amino acids for broilers in the growing (14 to 21 days old) and retirement (35 to 42 days) phases on nitrogen, potassium and phosphorus balance. Ninety Cobb broilers were distributed in a completely randomized design with three treatments and six replications with five and three birds per experimental unit in the growing and retirement phases, respectively. Diets were elaborated to contain reduced CP and aP levels (19 and 17% CP in the growing phase, with 0.34% aP; and 18 and 16% CP in the retirement phase, with 0.30% aP), supplemented with crystalline amino acids and 500 FTU of phytase/kg diet. These were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzyme; Phytate; Environment; Metabolism. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000300022 |
| |
|
|
| Rodrigues,Valéria Vânia; Cantarelli,Vinícius de Souza; Amaral,Nikolas de Oliveira; Zangeronimo,Márcio Gilberto; Brito,Jeronimo Ávito Gonçalves de; Fialho,Elias Tadeu. |
| Two experiments were conducted to evaluate the performance, the energy and nutrient balance and economic viability of production of growing pigs fed diets with reduced levels and phytase. In experiment 1, 60 barrows and gilts (initial weight 25 ± 1.72 kg) were housed in a randomized block design with three diets, ten replicates and two animals per experimental unit (one male and one female). One of the diets was formulated with a reduced level with phytase and evaluated in comparison to a positive-control diet that was formulated according to the nutritional recommendations for animals of this breed, and a negative-control diet without phytase. The different diets did not affect feed intake, but the diet with phytase promoted better final weight, daily... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet formulation; Enzyme; Metabolism; Nutrition; Performance. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200019 |
| |
|
|
| Chopin, T; Floc'H, J; Bodeau, B; Penot, M. |
| Phosphorated nutrition of the red alga Chondrus crispus Stackh. is studied is two morphologically very dissimilar forms of the thallus. Phosphorus measurements, which were monthly carried out at different parts of the alga, showed first that the distribution of this element is not homogeneous along the thallus, and second that seasonal variations occur. It is suggested that the classical polymorphism of the species can be taken into account as concerns its physiology. Besides, from absorption and exsorption experiments which were performed with super(32)P as a tracer, it is shown that the high concentration factor of phosphorus in the alga as compared to the environmental seawater (up to 17.9 x 10 super(4)) can be explained as an effect of metabolic process. |
| Tipo: Text |
Palavras-chave: Chondrus crispus; Algae; Distribution; Metabolism; Seasonal variations; Food absorption; Phosphorus; Plant nutrition. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1175.pdf |
| |
|
|
| LIPINSKI,LEANDRO C.; KMETIUK,LOUISE B.; MATHIAS,PAULO C.F.; MALTA,ANANDA; FAVERO,GIOVANI M.; RIBEIRO,TATIANE A.; TOLEDO,ALCEU; NETTO,MARIO R. MONTEMOR; RODRIGUES,MARCOS R.S.. |
| ABSTRACT Introduction/Aim: The gut has shown to have a pivotal role on the pathophysiology of metabolic disease. Food stimulation of distal intestinal segments promotes enterohormones secretion influencing insulin metabolism. In diabetic rats, oral insulin has potential to change intestinal epithelium behavior. This macromolecule promotes positive effects on laboratorial metabolic parameters and decreases diabetic intestinal hypertrophy. This study aims to test if oral insulin can influence metabolic parameters and intestinal weight in obese non-diabetic rats. Methods: Twelve weeks old Wistar rats were divided in 3 groups: control (CTRL) standard chow group; high fat diet low carbohydrates group (HFD) and HFD plus daily oral 20U insulin gavage (HFD+INS).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oral insulin; Intestine; Diabetes; Obesity; Metabolism; Pancreatic beta-cell. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401699 |
| |
|
|
| Boucher, Guy; Clavier, Jacques; Garrigue, Claire. |
| Oxygen demand, carbon dioxide release and total alkalinity shift were calculated from changes in oxygen, pH and total alkalinity produced by bottom dark incubations at the water-sediment interface of the 3 bottom types identified in a southwest lagoon in New Caledonia. Total sediment oxygen demand (AO?) was corrected from nonbioloyical oxygen demand (NBOD) In order to obtain the apparent biological activity (AOlO)T.o tal carbon dioxide flux (AC02)w as corrected from total alkalinity shift in order to estimate organic carbon processes. The resulting mean carbon dioxide flux (ACOzO= 2.58 mm01 m-' h-', SE = 0.12) exceeded biological oxygen demand (AO," = 1.60 mm01 m-' h-', SE = 0.08). The highly significant ratio estimates from functional regression lines of... |
| Tipo: Text |
Palavras-chave: Carbon flux; Metabolism; Tropical lagoon. |
| Ano: 1994 |
URL: https://archimer.ifremer.fr/doc/00296/40745/39738.pdf |
| |
|
|
| Paes,L.S.; Borges,J.P.; Cunha,F.A.; Souza,M.G.C.; Cyrino,F.Z.G.A.; Bottino,D.A.; Bouskela,E.; Farinatti,P.. |
| This study compared strategies to equalize the volume of aerobic exercise performed with different intensities by Wistar rats, based on the distance covered during exercise bouts and energy expenditure (EE, isocaloric sessions) obtained from oxygen uptake (V̇O2) or respiratory exchange ratio (RER). Thirty-three male rats (270.5±12.8 g) underwent maximal exercise tests to determine V̇O2 reserve (V̇O2R), being randomly assigned to three groups: moderate-intensity continuous exercise at speed corresponding to 50% V̇O2R (MIC; n=11); high-intensity continuous exercise at 80% V̇O2R (HIC; n=11); and high-intensity intermittent exercise (HII; n=11) at 60% V̇O2R (3 min) and 80% V̇O2R (4 min). Exercise duration was calculated individually to elicit EE of 5 kcal in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy expenditure; Aerobic exercise; Exercise testing; Metabolism; Fitness. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000800607 |
| |
|
| |
|
|
| Oliveira,EM; Tanure,CBGS; Castejon,FV; Castro,RMAD; Rocha,FRT; Carvalho,FB; Andrade,MA; Stringhini,JH. |
| ABSTRACTAn experiment was conducted to evaluate the performance and nutrient metabolizability of broilers fed diets containing fumonisin B1 (FB1) and an esterified glucomannan (EGM). In total, 420 male broilers were distributed according to a 3 x 2 + 1 factorial arrangement, corresponding to three FB1 exposure times (seven, 21, or 35 days), two dietary glucomannan addition levels (0 or 0.1% EGM), and control diet, totaling seven treatments. The following diets were fed: 1) Control diet, 2) pre-starter diet containing FB1, 3) pre-starter diet containing FB1 and 0.1% EGM, 4) starter diet containing FB1, 5) starter diet containing FB1 and 0.1% EGM, 6) grower diet containing FB1, and 7) grower diet containing FB1 and 0.1% EGM. On d 7, broilers fed FB1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adsorbent; Fungi; Grains; Metabolism; Nutrition; Poultry.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300313 |
| |
|
|
| Fiori,Leandro Fabrício; Figueiredo,Bruno R. S.; Pavanello,Audrei; Alves,Vander Silva; Mathias,Paulo Cezar de Freitas; Benedito,Evanilde. |
| ABSTRACT Considering that the anti-predation behaviour of prey fishes may vary with predator hunting strategy, we experimentally investigated the physiological responses of Astyanax bimaculatus (Linnaeus, 1758) shoals to the presence of two piscivorous fish species with different hunting modes: sit-and-wait and active pursuit. In addition, we evaluated the influence of underwater visibility conditions on the interaction between predator and prey. We tested the hypotheses that: (i) prey plasma cortisol and glucose levels vary according to piscivore hunting strategy, and (ii) no reduction in plasma glucose and cortisol levels takes place in turbid environments due to the inability of prey to accurately recognise predators by non-visual signals. The results... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolism; Hoplias aff. malabaricus; Astronotus crassipinnis; Astyanax bimaculatus; Turbidity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100232 |
| |
|
|
| Campos,Paulo Henrique Reis Furtado; Le Floc'h,Nathalie; Noblet,Jean; Renaudeau,David. |
| ABSTRACT Global warming is one of the major environmental threats facing the world in the 21st century. This fact will have a significant impact on pig production due to its direct effects on welfare, health, and performance of pigs. Besides, the effects of high temperatures will presumably become more important over the next decades due to the development of pig production in developing countries mainly located in tropical and subtropical areas, where animals are often exposed to ambient temperatures above their thermal comfort zone. Furthermore, pigs reared in tropical areas are often confronted to sanitary challenges including poor hygiene conditions, lack of respect for sanitary rules, and pathogens. This results in the stimulation of the immune system... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal biometereology; Heat stress; Metabolism; Physiology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600537 |
| |
|
|
| Fascina,Vitor Barbosa; Sartori,José Roberto; Gonzales,Elisabeth; Carvalho,Fabyola Barros de; Souza,Ivan Mailinch Gonçalves Pereira de; Polycarpo,Gustavo do Valle; Stradiotti,Ana Cristina; Pelícia,Vanessa Cristina. |
| The experiment evaluated the influence of isolated or associated phytogenic additives (PA) and organic acids (OA) on nutrient digestibility, performance and carcass characteristics of broiler chickens. Two experiments were conducted in a completely randomized design with a 2 × 2 + 1 factorial arrangement of treatments (with or without PA × with or without OA + antibiotic performance enhancer and anticoccidial). In the first experiment, two metabolic tests were conducted to determine the metabolizability coefficients of the nutrients of starter and growth diets. In the second experiment, 2520 one-day-old chicks were housed in 40 experimental units to evaluate the performance and carcass characteristics. The phytogenic additives and organic acids, isolated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidifier; Additive; Antibiotics; Herbal extract; Metabolism; Sanitary challenge. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000008 |
| |
|
|
| VOLPATO,ANDREIA; CRECENCIO,REGIANE B.; TOMASI,THAINÃ; GALLI,GABRIELA M.; GRISS,LUIZ GUSTAVO; SILVA,ANIÉLEN D. DA; SCHETINGER,MARIA ROSA C.; SCHOGOR,ANA LUIZA B.; BALDISSERA,MATHEUS D.; STEFANI,LENITA M.; SILVA,ALEKSANDRO S. DA. |
| Abstract: The aim of this study was to evaluate whether the use phytogenic as feed additive of Holstein calves could exert beneficial effects on animal health and performance. Thirty newborn calves were randomly divided into two groups (control and treated), and the treated consisted of 10 g of the phytogenic product diluted in milk once a day for 30 days. Blood and fecal samples were collected, and fecal score was performed daily in order to determine the occurrence of diarrhea. Treated calves showed higher hematocrit on days 45 and 60 of life. Serum levels of urea, total proteins, globulins and glucose were lower in the treated group on day 60 of life, while triglycerides were lower on days 15 and 60 of life. Serum glutathione S-transferase activity was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed; Metabolism; Calves; Oils; Nutrition; Animal health. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700804 |
| |
|
|
| Gomes, Aline Dal`Olio; Vieira, Vanessa Aparecida Rocha Oliveira; Tabata, Yara Aiko; Takahashi, Neuza Sumico; Moreira, Renata Guimarães; Ribeiro, Cristiele Silva. |
| Triploid fish are usually sterile. Thus, the energy and nutrients intended for sexual maturation may be available to enhance flesh quality and physical growth. The present study aimed to investigate differences in the metabolic substrates, lipids and proteins, between storage tissues from diploid and triploid female rainbow trout. Monthly, metabolic substrates were quantified in liver, muscle, and ovaries, which were collected during the first reproductive cycle. In general, it was possible to identify a seasonal and similar deposition of metabolites in different tissues of 2n and 3n females, mainly at early stages of gonadal maturation. However, from the stages 5-6, the ovaries showed great differences between ploidies, with higher concentration of lipids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolism; Reproduction; Triploidy; Somatic indexes; Oncorhynchus mykiss.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/44580 |
| |
|
|
| Oliveira,Camilla Roana Costa de; Rabello,Carlos Bôa-Viagem; Souza,Janete Gouveia de; Nascimento,Guilherme Rodrigues do; Lopes,Elainy Cristina; Silva,Almir Ferreira da; Silva,Jaqueline de Cássia Ramos da; Macambira,Gabriel Miranda. |
| ABSTRACT The objective of this study was to determine prediction equations to estimate the nitrogen-corrected apparent metabolizable energy (AMEn) values of animal meals used in broiler diets through meta-analysis. A bibliographic review was undertaken with studies conducted in Brazil from 2000 to 2016 to catalogue information on AMEn values and the following chemical elements in the composition of the feedstuffs: crude protein (CP), ether extract (EE), gross energy (GE), mineral matter (MM), calcium (Ca), and phosphorus (P). Groups were also catalogued and formed according to sex and age of birds. Chemical correlations were analyzed, and a multiple linear regression model with the stepwise procedure was used to examine the association between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AMEn; Broiler; Meat and bone meal; Metabolism; Prediction. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100537 |
| |
|
| |
| Registros recuperados: 176 | |
|
|
|
