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Registros recuperados: 38
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A preliminary study of the behaviour and vitality of reseeded juvenile great scallops, of three sizes in three seasons ArchiMer
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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Aboveground biomass and concentration of nutrients in semiarid rangeland plant species: Influence of grazing and soil moisture Phyton
Gul,B; Islam,M; Ahmad,S; Gul,S.
Spatial and temporal patterns of aboveground biomass and nutritive value of rangeland species with respect to the influence of grazing and soil moisture were investigated. The research was conducted during two years at the Tomagh Research Station, near Sanjawi, Ziarat District, Balochistan, Pakistan. This area is protected from grazing since 1998; however, some of the area is open for grazing. Tree sites were selected for research purposes: a protected plain, a protected hilly, and an unprotected plain grazed area. Sampling was carried out during the spring, summer and autumn seasons. Results revealed that soil moisture was greater at the protected than unprotected sites. The aboveground plant biomass was 66% to 76% lower at unprotected than protected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rangeland; Biomass production; Season; Semiarid; Grazing; Grass.
Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100013
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ABSENCE OF SEASONAL EFFECT ON THE IMMUNOMODULATORY ACTION OF BRAZILIAN PROPOLIS ON NATURAL KILLER ACTIVITY J. Venom. Anim. Toxins
SFORCIN,J. M.; KANENO,R.; FUNARI,S. R. C..
Propolis, a beehive product widely used in folk medicine as an antiinflammatory agent, has been attracting researchers' attention to scientifically elucidate its biological properties and therapeutic activities. The aim of this paper was to study the possible effect of propolis on natural killer activity, since propolis immunomodulatory action has been suggested, especially on non-specific immunity. Propolis was produced by africanized honeybees (Apis mellifera L.), collected throughout a whole year, and pooled by season. Hydroalcoholic solutions of propolis were prepared with each pool and administered to rats by gavage over three days. Natural killer activity of non-adherent spleen cells was evaluated by the 51Cr-release cytotoxicity assay against Yac-1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Propolis; Season; Immunomodulation; Natural killer activity; Cytotoxic assay.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302002000100003
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Agricultural landscapes as habitat for birds in central Chile RChHN
Muñoz-Sáez,Andrés; Perez-Quezada,Jorge F.; Estades,Cristián F..
Abstract Background: Understanding the role of agroecosystems as habitat for wildlife is crucial for long-term conservation planning, as different crop stratification and landscape elements can influence bird communities, which are also affected by seasonality. The goal of our study was to determine how agricultural landscapes varying in land cover characteristics affect bird richness and abundance. Bird surveys were conducted at 110 locations within agricultural landscapes in central Chile. The surveyed areas were characterized by land cover at two scales (50 and 500 m radii) through direct observation and photo-interpretation, during winter and spring seasons. Generalized Linear Mixed Models were used to evaluate the effects of different agricultural...
Tipo: Journal article Palavras-chave: Hedgerows; Season; Orchards; Low crops; Avian communities.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2017000100202
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Behavior of beef cattle and the microclimate with and without shade - doi: 10.4025/actascianimsci.v34i4.15055 Animal Sciences
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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Distribution of Vibrio alginolyticus-like species in Shenzhen coastal waters, China BJM
Chen,Ming-Xia; Li,He-Yang; Li,Gang; Zheng,Tian-Ling.
We investigated the distribution of vibrios in Shenzhen coastal waters in order to obtain valuable information for the aquaculture industry and a health warning system. Quantities of vibrios from surface waters ranged from 0 to 4.40×10(4) CFUs mL-1 in April (spring), while from 0 to 2.57×10³ CFUs mL-1 in September (autumn); the abundance of V. alginolyticus-like species from surface water ranged from 0 to 6.72×10³ CFUs mL-1 in April (spring) and from 0 to 1.28×10³ CFUs mL-1 in September (autumn); higher counts were observed in spring. The V. alginolyticus-like species was dominant in Shenzhen coastal waters, with the highest abundance in the clean region (stations YMK001 and GDN064) in April, suggesting that Vibrio spp. were naturally occurring bacteria in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Distribution; Vibrio alginolyticus-like species; Season; Shenzhen coastal waters; China.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300007
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Efeito da epoca de semeadura sobre a qualidade de sementes de soja. Repositório Alice
PEREIRA, L.A.G.; COSTA, N.P.; QUEIROZ, E.F. de; NEUMAIER, N.; TORRES, E..
Com o objetivo de determinar o efeito da epoca de semeadura da soja sobre a qualidade da semente produzida, foram estudadas as cultivares "Parana", "Bragg", "Santa Rosa" e "Vicoja", semeadas de outubro a dezembro de 1977 e 1978, em Londrina, PR. Nas combinacoes cultivares x epocas, foi avaliada a percentagem de germinacao de sementes. Constataram-se diferencas significativas entre epocas e entre cultivares para o citado parametro. As sementes das cultivares precoces apresentaram a menor percentagem de germinacao, quando foram provenientes das semeaduras realizadas em 20.10. A semeadura efetuada em 20.12, originou sementes de baixa qualidade em todas as cultivares. Assim, as epocas de semeadura de novembro e inicio de dezembro proporcionaram a melhor...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Soja; Semente; Epoca de plantio; Cultivar; Semeadura; Qualidade; Brasil; Parana; Soybean; Seed; Sowing date; Period; Season; Time; Quality; Variety; Brazil.
Ano: 1979 URL: http://www.alice.cnptia.embrapa.br/handle/doc/444573
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Efeito do tipo racial e da época do ano sobre o ejaculado de caprinos criados em região semi-árida. Repositório Alice
MACHADO, R.; SIMPLICIO, A. A.; SANTOS, D. O..
1991
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Época do ano; Caprino; Sêmen; Animal reproduction; Ejaculação; Season; Goats; Reproduction.
Ano: 1991 URL: http://www.alice.cnptia.embrapa.br/handle/doc/514673
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Effect of Season on the Reproductive Organs of the Female African Giant Rat (Cricetomys gambianus) in Zaria, Nigeria International Journal of Morphology
Ali,M. N; Onyeanusi,B. I; Ayo,J. O; Ojo,S. A; Salami,S. O; Nzalak,J. O; Byanet,O.
The study was carried out to determine the effect of season on the female reproductive organs of the African Giant rat using the standard methods, with the aim of obtaining the base-line values. The weights of the oviduct/uterus, vagina and the entire tubular organ were consistently higher during the harmattan season (0.789 ± 0.07 g, 2.708 ± 0.19 g and 3.455 ± 0.25 g, respectively) than the hot ­ dry (0.591 ± 0.02 g, 2.239 ± 0.13 g and 2.831 ± 0.14 g, respectively) and the rainy season (0.723 ± 0.04 g, 2.412 ± 0.01 g and 3.148 ± 0.12 g, respectively). The mean weight and length of the ovary were not significantly different throughout the season, suggesting that the AGR may breed throughout the year. The slight increase in the weight of the tubular organ...
Tipo: Journal article Palavras-chave: Season; Reproductive organs; Female; African giant Rat.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300029
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Effects of Natural Environmental Conditions on the Ovarian Histometric Dynamics of Five Striped Squirrels (Funambulus pennanti) International Journal of Morphology
Rehman,Sadia; Mahmood-ul-Hassan,; Qureshi,Anas Sarwar; Akbar,Zeeshan.
The present study was designed to determine the morphological and histological variations in the female palm squirrel's reproductive organs which inhabit croplands of central Punjab. 16 specimens were collected from 3 different locations of Faisalabad district during different months in order to collect their ovaries samples in order to determine the breeding phenology of this species. Body weight and external body measurements were recorded. Two adult females were autopsied each month and their ovaries were extracted. Tissue were prepared by the tissue paraffin technique and stained by H&E. Seasonal variations in the follicular size and shape were observed. Statistical analysis revealed that values of all parameters of ovaries were significantly...
Tipo: Journal article Palavras-chave: Squirrels; Folliculogenesis; Ovaries; Season.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100037
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Effects of Transportation Distance, Slaughter Age, and Seasonal Factors on Total Losses in Broiler Chickens Rev. Bras. Ciênc. Avic.
Arikan,MS; Akin,AC; Akcay,A; Aral,Y; Sariozkan,S; Cevrimli,MB; Polat,M.
ABSTRACT This study aimed at determining the total losses associated with the season, transportation distance, and slaughter age during the transportation of broilers from poultry farms to slaughterhouses in Turkey. All data and parameters were statistically analyzed and the change in total loss during transportation was evaluated by two-way analysis of variance to determine which factors or variables affect this change. Total transportation losses were compared among the four seasons of the year, two slaughter ages (younger broiler, 31-39 days of age; older broilers 40-46 days of age) and three distance ranges (short, ≤50 km; medium, 51-150 km; and long, ≥151 km). Total losses of 259.40 g, 307.35 g, and 350.14 g were determined for short, medium and long...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Transportation; Broiler production; Slaughter age; Season; Weight losses.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300421
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Epoca de plantio para o algodoeiro herbaceo (Gossipium hirsutum L.) nas principais regioes produtoras do Estado de Minas Gerais. Infoteca-e
LACA BUENDIA, J.P. del C..
1982
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Algodao; Herbaceo; Plantio; Epoca; Cultivo; Gossypium hirsutum; Brasil; Minas Gerais; Annual cotton; Plantaction; Season.
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/262601
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Histological and Morphometric Analysis of Testes of Adult Quail (Coturnix coturnix japonica) of Bangladesh International Journal of Morphology
Shil,Subrata Kumar; Quasem,Md. Abul; Rahman,Mohammad Lutfur.
A histological and morphometric study was conducted to evaluate the seasonal testicular variations in the adult Japanese quail (Coturnix coturnix japonica) in Bangladesh. The weight of birds and testes, volume, length, circumference, seminiferous tubule diameter, circumference and height of germinal epithelium of testes were measured. Sections of testes obtained from studied birds were stained with H&E and images were taken by J software. Weight and volume of paired testes of quails significantly heavier (P<0.05) in long day period of summer and rainy season (March ­ September) than the short day period of autumn and winter (October ­ February). Seasons had no significant effect on live weight gain of quails. The weight and diameter of testes or...
Tipo: Journal article Palavras-chave: Japanese quail; Morphometry; Testis; Season; Day length; Temperature.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100017
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Impact of agro-farming activities on microbial diversity of acidic red soils in a Camellia Oleifera Forest Rev. Bras. Ciênc. Solo
Li,Jun; Wu,Zelong; Yuan,Jun.
ABSTRACT The production of Camellia oleifera (oil tea), typically planted in acidic red soils in southern China, is limited by low soil fertility. Agro-farming is one way to promote soil fertility by increasing organic matter and microbial communities. To understand the impact of agro-farming activity on soil fertility, three types of agro-farming, namely, raising laying hens under forest (RLH), cultivating Lolium perenne grass under forest (LPG), and maintenance of native grass (MNG), were employed in an oil tea farm with acidic red soil in Changsha, China. Soil samples were collected from the farm to estimate microbial communities, pH, and total organic carbon (TOC) in different seasons. The results indicated that TOC and temperature were the dominant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oil tea; Season; Soil microbial community; High throughput sequencing.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100413
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Influence of season and pollution on the antioxidant defenses of the cichlid fish acará (Geophagus brasiliensis) BJMBR
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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Influence of season on intramuscular fatty acid profile of fighting bull Agrociencia
Horcada-Ibáñez,Alberto; Polvillo-Polo,Oliva; Valera-Córdoba,Mercedes; Juárez-Davila,Manuel.
In Spain, beef from Fighting Bulls is traditionally consumed during spring and summer festivals but there are few studies on fatty acid profile from of these bulls. The objective this study was to evaluate the effect of slaughtering season and year of breeding on fatty acid composition of Spanish Fighting Bull intramuscular fat. The study was carried out during 2006 and 2009 seasons in Seville and Pamplona using a sampling survey methodology. Fighting Bulls (n=150) were raised in a traditional production system (Spanish dehesa) and slaughtered in spring (Sevilla) and summer (Pamplona). Supraespinatus muscle was collected at the abattoir 24 h postmortem for fatty acid analysis. Statistical analysis included location and slaughter as main effects and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Traditional production system (dehesa); Fighting Bull; Lipids; Season.
Ano: 2012 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000500004
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Influencing Factors of Infestation of Endo and Ectoparasites on Hair Sheep in Tropical Ecuador JARTS
Suárez, Victor; Tawfik, Ezzat S..
120 hair sheep were tested for faecal, skin and blood parasites. After three parasitological studies in humid Sucumbíos, it was proved that the parasitic charge is influenced by different factors. In the case of air temperature and humidity there was no variation detected between the seasons, although the parasitical charge rose in the course of this study. With regard to parasitic charge some systematic differences were found between the farming systems. Prophylactic measures such as rotational grazing, guarantee the food alternatives in the case of grass shortage, the strategic treatment with de-wormers and removal of excrement and garbage were recommended.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal husbandry endoparasites; Ectoparasites; Hair sheep; Rotational grazing; Season; Farming system; Prophylactic measures; Ecuador.
Ano: 2003 URL: http://www.jarts.info/index.php/jarts/article/view/32
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Interactions of season, sex and size on nutrient composition of freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823) from Lake Eğirdir Ciênc. Tecnol. Aliment.
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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Número de perfilhos do capim-braquiária em regime de lotação contínua - doi: 10.4025/actascianimsci.v33i1.10440 Animal Sciences
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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Occurrence of entomopathogenic nematodes in Polish soils Ciência Rural
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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