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Registros recuperados: 36 | |
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Santos, Manoel Eduardo Rozalino; Universidade Federal do Vale do São Francisco; Gomes, Virgilio Mesquita; Universidade Federal de Viçosa; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Albino, Ronan Lopes; Universidade Federal de Viçosa; Silva, Simone Pedro da; Universidade Federal de Viçosa; Santos, Andreza Luzia; Universidade Federal de Viçosa. |
Objetivou-se identificar, pela avaliação do perfilhamento, as estratégias adequadas de manejo da Brachiaria decumbens cv. Basilisk em lotação contínua com bovinos. Foram estudadas duas estratégias de manejo: pasto com 25 cm de altura durante todo período experimental, e pasto com 15 cm no inverno e 25 cm na primavera e verão. Foram adotados o esquema de parcelas subdivididas e o delineamento em blocos casualizados com quatro repetições. As estratégias de manejo foram o fator primário e as estações (inverno, primavera e verão), o fator secundário. O menor balanço entre taxas de aparecimento (TApP) e de mortalidade de perfilhos (TMoP) e o menor número de perfilho vegetativo ocorreram no inverno. Na primavera e verão, o balanço e o número de perfilhos... |
Tipo: Pesquisa Científica |
Palavras-chave: 5.04.04.00-8 altura do pasto; Brachiaria decumbens; Estação do ano; Manejo sazonal; Pastejo sward height; Brachiaria decumbens; Season; Seasonal management; Grazing. |
Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10440 |
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Baliscei, Marcio Antonio; Instituto Paranaense de Assistencia Tecnica e Extencao Rural; Souza, Wander de; Instituto Paranaense de Assistência Técnica e Extensão Rural; Barbosa, Orlando Rus; Universidade Estadual de Maringá; Cecato, Ulysses; Universidade Estadual de Maringá; Krutzmann, Alexandre; Universidade Estadual de Maringá; Queiroz, Edicarlos de Oliveira; Universidade Estadual de Maringá. |
It was evaluated the intake behavior of Nellore steers in system without shade (WS), and silvopastoral system (SP) maintained in star grass (Cynodon plectostachyus) in summer and winter. Twenty-four Nellore steers were used (12 in each system), mean age 18 months and weight of 294.5 kg. The design was completely randomized with two seasons, two treatments, 24 hours and 12 repetitions. The observations were conducted in three days, for 24 hours, with an interval of 15 minutes, with effect of the hour on the grazing behavior (GRAZ) with a maximum of 52.1% and lying ruminating (LYRUM) with a minimum of 12.3%, both at 14h. The lying idle (LYIDL) was influenced by hour with a minimum of 11,6%at 14h, and by season, with 23.9% in summer, and 13.9%, in winter.... |
Tipo: Pesquisa de campo |
Palavras-chave: Welfare; Season; Nelore; Shadow welfare; Season; Nelore; Shadow. |
Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/15055 |
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Nicolas,Gérard; Fraigneau,Cloé; Aubin,Thierry. |
In the Budgerigar Melopsittacus undulatus, the significance of a conspecific alarm call was investigated in two seasons, winter and spring. Two qualitatively different behavioral responses were displayed by the receivers in reply to playbacks: call(s) and/or taking flight(s). The comparative analysis of the number of birds responding to the alarm and to the control signals revealed two major facts: 1) in both seasons, the responses to the alarm signal were only observed for females, not for males, 2) qualitatively, females exhibited a great inter-season variability in their behavioral responses to the hearing of an alarm call. In winter, the females were more predisposed to emit acoustic responses while in spring they mainly took flight. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Budgerigars; Alarm call; Sex; Season; Response plasticity. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200025 |
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Martins,I.V.F.; Pereira,M.J.S.; Grisi,L.; Scott,F.B.. |
The seasonal abundance of lumenal and larval forms of equine strongyles in the State of Rio de Janeiro, Brazil was evaluated. Thirty horses referred to the Federal Rural University of Rio de Janeiro were necropsied and their gastrointestinal tracts were separated into stomach, small intestine, cecum, ventral colon, dorsal colon and rectum. Two aliquots of 5% of the content were collected and examined for the presence of small strongyles and the rest of the content was examined for the presence of large strongyles. The mesenteric artery, liver, pancreas and peritoneum were examined for the presence of strongyle larvae. The mucosa of intestine segments was cut into parts of equal length, and each one was examined by the mural transillumination technique.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Strongyles; Equine; Abundance; Season. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000100006 |
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Aguiar,G.V.; van Tilburg,M.F.; Catunda,A.G.V.; Celes,C.K.S.; Lima,I.C.S.; Campos,A.C.N.; Moura,A.A.A.; Araújo,A.A.. |
The present study aimed to verify the caprine semen characteristics during dry and rainy seasons in the Brazilian Northeast, and the influence of these seasons on cooled semen. Seminal volume, concentration, percentage of motile cells, vigor and spermatic morphology, as well as biochemical profile (fructose, citric acid, P, Ca2+, Mg, total proteins and phospholipase A2 activity) were analyzed. It was observed a reduction (P<0.05) in normal sperm morphology, fructose, citric acid, P, Mg and total protein concentration during the dry season, which did not affect the motility, vigor, volume and sperm concentration. Phospholipase A2 activity was increased during the dry season (P<0.05). The analysis of the semen cooled at 4ºC during 48 hours showed... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Semen; Spermatozoa; Season; Cooling; Caprine. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100002 |
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MORATO,Ronaldo Gonçalves; GUIMARÃES,Marcelo Alcindo Barros de Vaz; FERREIRA,Fernando; VERRESCHI,Ieda Terezinha do Nascimento; BARNABE,Renato Campanarut. |
Ejaculate traits, testicular volume and plasma testosterone levels were determined once every two months for one year in 4 adult male jaguars (Panthera onca) housed at the São Paulo Zoo, SP, Brazil. Semen samples was collected by electroejaculation and analyzed for pH, total volume, motility (0-100%), status (0-5), total spermatozoa count and morphology. Blood samples was obtained by cephalic venipuncture immediately before the onset of electroejaculation and stored at -20ºC until assay of testosterone by RIA. Using a calliper, the length and width of each testis was measured and the values were combined to determine the testicular volume. Semen analyses demonstrated a high percentage of structurally abnormal sperm (mean = 51%) and low rates of motility... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jaguars; Semen characters; Testosterone; Season. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500008 |
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Wilhelm Filho,D.; Torres,M.A.; Tribess,T.B.; Pedrosa,R.C.; Soares,C.H.L.. |
The livers of Geophagus brasiliensis collected from both a non-polluted site and a polluted site were analyzed for different antioxidant defenses, O2 consumption, thiobarbituric acid-reactive substance (TBARS) levels, and histological damage. Compared to controls (116.6 ± 26.1 nmol g-1), TBARS levels were enhanced at the polluted site (284.2 ± 25.6 nmol g-1), as also was oxygen consumption (86.6 ± 11.3 and 128.5 ± 9.8 µmol O2 min-1 g-1, respectively). With respect to enzymatic antioxidants, increased catalase activities (8.7 ± 1.3 and 29.2 ± 2.4 mmol min-1 g-1, respectively), unchanged superoxide dismutase activities (767.2 ± 113.3 and 563.3 ± 70.2 U g-1, respectively), and diminished glutathione S-transferase activities (29.0 ± 3.2 and 14.9 ± 3.2 µmol... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oxyradicals; Antioxidant defenses; Fish; Acará; Season; Pollution; Adaptation. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000600004 |
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BAHADIR KOCA,Seval; ARGUN UZUNMEHMETOĞLU,Esra. |
Abstract Effects of interaction of season, sex and size on nutrient composition and fatty acid profiles of freshwater crayfish (Astacus leptodactylus) caught from the Eğirdir Lake were investigated on a factorial level. In the factorial analysis; 4 levels of season factors (autumn, winter, spring, summer), 2 levels of sex factor (male, female) and 1 level size factor were available. According to the results of biochemical analysis, effects of seasons were determined on crude protein and moisture levels. Crude ash levels changed depending on sex and season. There were no interactions of these three factors on the crude fat levels. The season and sex affected on LA, α-LNA and ∑HUFA levels. ARA, EPA, DHA, ∑SFA and ∑PUFA levels were affected from seasonal... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Astacus leptodactylus; Biochemical composition; Fatty acid; Season; Sex. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000500044 |
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Tumialis,Dorota; Pezowicz,Elżbieta; Skrzecz,Iwona; Mazurkiewicz,Anna; Maszewska,Justyna; Pietraszczyk,Joanna Jarmuł; Kucharska,Kornelia. |
ABSTRACT: Entomopathogenic nematodes ( Steinernematidaeand Heterorhabditidae) were studied in Polish soils according to the: season, habitat and altitude. In total, 167 soil samples were taken from 111 localities in Poland along north-south transect. Entomopathogenic nematodes were isolated from 53 soil samples (31.7%). Nematodes species were identified genetically from 16 samples, and in all other 37 samples nematodes were determined to the genus level. Three species of the genus Steinernema ( Steinernema kraussei, S. feltiae, S. carpocapsae) and one of the genus Heterorhabditis( Heterorhabditis megidis) were recorded. Steinernema feltiaewas the most common species. There was not a significant association between the occurrence of nematodes and season... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution; Steinernema; Heterorhabditis; Poland; Season; Habitat. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701126 |
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Fallas López, Marianella. |
Los germinados de trigo contienen un compuesto fenólico 6-methoxi-2-benzoxazolinone (6-MBOA) que estimula la reproducción en ciertas especies pequeñas de mamíferos herbívoros, pero esto no se ha demostrado en machos. El objetivo del presente estudio fue evaluar el efecto de suplementar, por periodos cortos, con germinados de trigo en la libido y calidad del semen de conejos. Se colocaron machos Nueva Zelanda Blanco puberales de cinco meses de edad (n = 18) en dos grupos similares de acuerdo a sus pesos y asignados completamente al azar a uno de dos tratamientos experimentales: (1) Dieta peletizada comercial únicamente o testigo; (2) dieta peletizada comercial más germinados de trigo (300g animal-1 d-1). El diseño experimental fue completamente al azar con... |
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Palavras-chave: Conejos; 6-methoxi-2-benzoxazolinone; Orden de eyaculado; Estación; Semen; Rabbits; Number of ejaculation; Season; Semen; Maestría; Ganadería. |
Ano: 2010 |
URL: http://hdl.handle.net/10521/289 |
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Trenkel, Verena; Pinnegar, J; Dawson, W; Du Buit, M; Tidd, A. |
The spatial and temporal structure of predator-prey relationships in the Celtic Sea was investigated for 4 commercially important predator species (cod Gadus morhua, hake Merluccius merluccius, megrim Lepidorhombus whiffiagonis, and whiting Merlangius merlangus) using stomach-content and bottom-trawl survey data for the period 1982 to 1995. Blue whiting Micromesistius poutassou were consumed more often during the summer months, whereas mackerel Scomber scombrus and Trisopterus spp. (poor cod T minutus, Norway pout T esmarkii, and bib T luscus) were found more often in predator stomachs during the winter half-year. On a spatial scale, blue whiting was consumed over the shelf edge, in accordance with their higher densities in the environment, while mackerel,... |
Tipo: Text |
Palavras-chave: Spatial distribution; Season; Celtic Sea; Preference; Stomach contents; Diet. |
Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-3619.pdf |
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Fleury, Pierre-gildas; Mingant, Christian; Castillo, A. |
In order to have a better understanding of recessing in great scallop, Pecten maximus and consequently the causes of mortality at reseeding, this study has monitored, at different seasons, the dispersion and recessing of different sizes of juveniles (about 15, 30 and 45 mm, called small, medium and large) after seeding. Moreover, the aim was to see when small spat (15 mm) could be seeded, and thus reduce the costs of intermediate culture. Three monitoring approaches were used together: (1) continual observations by remote video camera, of a defined area (less than 1 m2) containing 10 scallops from each size group; (2) daily monitoring of behaviour with divers along three bottom lines, with 20 × 1 m2 plots each and nine marked scallops per plot; and (3) the... |
Tipo: Text |
Palavras-chave: Behaviour; Great scallop (Pecten maximus); Season; Seeding; Size; Vitality of spat. |
Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00326/43752/43284.pdf |
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Merillet, Laurene; Mehault, Sonia; Rimaud, Thomas; Piton, Corentine; Morandeau, Fabien; Morfin, Marie; Kopp, Dorothee. |
In the context of the landing obligation set by the new Common Fisheries Policy (CFP), Norway lobster Nephrops norvegicus was identified as a species likely to have high survival rate when discarded in the bottom trawl fishery of the Bay of Biscay. Previous studies in this area reported a survival rate between 30% and 51%, but the experiments were done on a limited monitoring period and the seasonal variations were not investigated. This study was designed to obtain a reliable value for survival rate after a 14-day monitoring period in onshore tanks allowing considering delayed mortality. The study also tested the effect on the survival rate of using a discarding chute system, a sorting device that was made mandatory on the 1st of January 2017 for Nephrops... |
Tipo: Text |
Palavras-chave: Nephrops norvegicus; Sorting process; Captivity; Vitality; Season; Discard survival. |
Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00407/51864/52608.pdf |
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Raimonet, Melanie; Ragueneau, Olivier; Andrieux Loyer, Francoise; Philippon, Xavier; Kerouel, Roger; Le Goff, Manon; Memery, Laurent. |
The high heterogeneity of silica cycling in coastal margins and the lack of silica data (compared to nitrogen and phosphorus) prevent the estimation of global silica retention in estuaries. In this study, the spatial and temporal variability of porewater silicic acid (Si(OH)4) profiles e that integrate benthic transport and reaction processes e was investigated at different spatial (metre, longitudinal and crosssection, intra-estuary) and temporal (tidal, seasonal) scales in two macrotidal estuaries, very close geographically but essentially differing in their shape. Studying the spatial and temporal variability of Si(OH)4 concentrations in porewaters provided evidence for the importance of transport processes, e.g. bio-irrigation, tidal pumping,... |
Tipo: Text |
Palavras-chave: Heterogeneity; Season; Silicate; Sediment; Land-sea interface; Upscaling. |
Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00124/23529/22370.pdf |
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Registros recuperados: 36 | |
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