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| Registros recuperados: 126 | |
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| Lorini,Lisete Maria; Rebelato,Gisele Sana; Bonatti,Juliano. |
| Lonomia obliqua is an insect that has urticant spines in the larval stage. This species may cause death as a result of haemorrhages caused by a toxin released from the caterpillar's spines onto the skin of the victim. Since 1989 when this species was identified in Rio Grande do Sul, Brazil, many accidents have happened. The aim of this study was to verify the oviposition, fecundity, fertility, viability of eggs and incubation period of the species. Adults were left in a moth's cage to mate and lay eggs. Thirteen couples were observed daily, and the number of eggs and the caterpillars emerged were recorded. The results showed a mean of 2.8 (± 1.3) ovipositions, a mean fecundity of 135.3 (± 54.4) eggs/female, a mean fertility of 111.9 (± 55.4) eggs/female, a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lonomia obliqua; Urticant caterpillar; Public health; Fecundity; Fertility. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400011 |
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| Menegassi,Sílvio Renato Oliveira; Barcellos,Júlio Otávio Jardim; Peripolli,Vanessa; Dias,Eduardo Antunes; Costa Junior,João Batista Gonçalves; Vieira,Maitê de Moraes; Moojen,Fernanda Gomes. |
| The objective of this study was to determine the main causes of failure in bull breeding using a soundness evaluation in Rio Grande do Sul State/Brazil. We evaluated 19,836 bulls from 15 different breeds with ages ranging from two to eight years. The failures of bulls in each step were analyzed by logistic regression. The binary logistic regression was applied because the response variable had only two responses: Success (1) and Failure (0). Older bulls are more likely to be rejected than are younger bulls, regardless of their genetic group. Depending on the step of the assessment, one or another group is rejected. All steps of bull breeding soundness evaluation (BBSE) are important, with special attention to the failures of the behavioral evaluation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BBSE; Fertility; Mounting ability; Scrotal circumference. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000700240 |
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| Fraire Cordero, Silvia. |
| El selenio y la vitamina E tienen funciones importantes para mantener la integridad de la membrana celular, razón por la cual se les relaciona con la reproducción. La finalidad fue evaluar el efecto de la administración subcutánea de Selenio y Vitamina E (Se-VE), de gonadotropina corionica equina (eCG) y una estrategia de alimentación (Alimentación Dirigida; AD) en la fertilidad de ovejas Pelibuey. La aplicación de Se-VE se realizó dos días antes del retiro de la progesterona y se observó la incidencia, inicio y distribución del estro a través del tiempo, tasa ovulatoria, porcentajes de retorno a estros, parición y fertilidad, así como la fecundidad y prolificidad. Se utilizaron 96 ovejas las cuales fueron agrupadas y asignadas al azar a uno de ocho... |
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Palavras-chave: Selenio; Vitamina E; Fertilidad; Alimentación dirigida; Ovejas Pelibuey; Selenium; Vitamin E; Fertility; Directed feeding; Pelibuey ewes; Maestría; Ganadería. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/99 |
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| Fraire Cordero, Silvia. |
| El selenio y la vitamina E tienen funciones importantes para mantener la integridad de la membrana celular, razón por la cual se les relaciona con la reproducción. La finalidad fue evaluar el efecto de la administración subcutánea de Selenio y Vitamina E (Se-VE), de gonadotropina corionica equina (eCG) y una estrategia de alimentación (Alimentación Dirigida; AD) en la fertilidad de ovejas Pelibuey. La aplicación de Se-VE se realizó dos días antes del retiro de la progesterona y se observó la incidencia, inicio y distribución del estro a través del tiempo, tasa ovulatoria, porcentajes de retorno a estros, parición y fertilidad, así como la fecundidad y prolificidad. Se utilizaron 96 ovejas las cuales fueron agrupadas y asignadas al azar a uno de ocho... |
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Palavras-chave: Selenio; Vitamina E; Fertilidad; Alimentación dirigida; Ovejas Pelibuey; Selenium; Vitamin E; Fertility; Directed feeding; Pelibuey ewes; Maestría; Ganadería. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/99 |
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| Tarkalson, D.D.; Brown, B.; Kok, H.; Bjorneberg, D.L.. |
| Impact of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) straw removal from fields on soil organic C (SOC) is a concern. Increased animal populations and potential development of cellulosic ethanol production could increase the removal of straw from fields. This paper focuses on the effects of wheat and barley straw removal on SOC in irrigated production systems, and related the results to estimates of the minimum straw C inputs required to maintain SOC (MSC) from rain-fed systems. Six studies compared SOC changes with time in irrigated systems in which wheat straw was removed or retained. These studies indicated that SOC did not decline when residues were removed. Apparently belowground biomass is supplying C to irrigated soils at a rate... |
| Tipo: Article |
Palavras-chave: Fertility; Soil quality. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1413/1/1383.pdf |
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| Gadotti,Gizele I.; Corrêa,Marciabela F.; Navroski,Renan; Nadal,Ariele P.; Schuch,Luis O. B.. |
| ABSTRACT The aim of this research was to study the linear correlations and spatial distribution between soil attributes and productivity and physiological quality of wheat seeds. Soil samples were collected at georeferenced points in an area of 41 ha with a rectangular grid of 100 × 100 m to determine soil fertility. Grain productivity, number of ears m-2, protein content, and physiological seed quality were assessed. The results were submitted to Pearson's correlation analysis, descriptive statistics, and geostatistics. Phosphorus content presented a high spatial variability, with a coefficient of variation of 97.79%. Protein content, number of ears, and SMP index presented low values of coefficient of variation, indicating their low spatial variability.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Precision agriculture; Fertility; Seed quality; Triticum aestivum L.; Spatial variability. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400624 |
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| Novak, J.M.; Ippolito, J.A.; Lentz, R.D.; Spokas, K.A.; Bolster, C.H.; Sistani, K.R.; Trippe, K.M.; Phillips, C.L.; Johnson, M.G.. |
| Biochar is being evaluated by scientists from the United States Department of Agriculture (USDA) Agricultural Research Service (ARS) for its potential to sequester soil C, to improve soil health, and to increase crop yields. ARS scientists from multiple locations such as Florence, SC, Kimberly, ID, Bowling Green, KY, Corvallis, OR, and St. Paul, MN, are conducting investigations with agronomic experiments at the laboratory, greenhouse, and field plot scales. To further expand biochars utility, ARS scientists have collaborated with United States Environmental Protection Agency (US EPA) investigators to reclaim mine-impacted soils. In the agronomic investigations, both positive and negative aspects of biochar application were revealed. In some experiments,... |
| Tipo: Article |
Palavras-chave: Fertility; Soil quality; Soil. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1621/1/1578.pdf |
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| Pontaroli,Ana Clara; Camadro,Elsa Lucila. |
| Somaclonal variation in plants regenerated by organogenesis from long-term cultured calluses of two diploid staminate genotypes of Asparagus officinalis cv. Argenteuil was characterized by plant phenotype, ploidy, meiotic behavior, pollen viability, fruit and seed set, and AFLP profiles. Phenotypic deviations from the donors were detected in foliage color, flower size, and cladode and flower morphology. Ploidy changes were observed in 37.8% of the 37 regenerants studied. Meiotic alterations in 12 out of 21 regenerants included laggards, dicentric bridges, micronuclei, restitution nuclei and polyads. Of the 408 AFLP markers screened in 43 regenerants and the donors, 2.94% showed polymorphism. High pollen viability was observed in the 22 regenerants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AFLP; Fertility; Plant morphology; Meiotic behavior; Ploidy. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300015 |
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| Paumgartten,F.J.R.; De-Carvalho,R.R.; Souza,C.A.M.; Madi,K.; Chahoud,I.. |
| ß-Myrcene (MYR) is a monoterpene found in the oils of a variety of aromatic plants including lemongrass, verbena, hop, bay, and others. MYR and essential oils containing this terpenoid compound are used in cosmetics, household products, and as flavoring food additives. This study was undertaken to investigate the effects of MYR on fertility and general reproductive performance in the rat. MYR (0, 100, 300 and 500 mg/kg) in peanut oil was given by gavage to male Wistar rats (15 per dose group) for 91 days prior to mating and during the mating period, as well as to females (45 per dose group) continuously for 21 days before mating, during mating and pregnancy, and throughout the period of lactation up to postnatal day 21. On day 21 of pregnancy one-third of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SS-myrcene; Monoterpenes; Essential oils; Reproductive toxicity; Fertility; Embryofetal toxicity; Postnatal development. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000700012 |
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| Albuquerque, Karina Perohouskei; Universidade Estadual de Maringá; Prado, Ivanor Nunes do; Universidade Estadual de Maringá; Prado, Rodolpho Martin do; 9850-7326; Cavallieri, Fábio Luiz Bin; Centro Universitário de Maringá; Rigolon, Luiz Paulo; Universidade Estadual de Maringá; Barbosa, Orlando Rus; Universidade Estadual de Maringá. |
| Superovulatory response, production and embryo quality and the effects of seasonal changes on embryo production of Nellore cows fed on either linseed (n-3) or canola seeds (n-6) were evaluated. Sixteen Nellore cows (550 ± 48.0 kg) were fed on three diets: control diet (CON), diet with linseed (LIN) and diet with canola seed (CAN) during four seasons. There was no difference in superovulatory response and in total corpora lutea produced when diets are taken into consideration. The number of cows that responded to superovulatory treatment was higher in the winter (93.8%) than in the summer (62.5%). No difference with regard to the three diets existed on the average number of total structures (6.20, 4.96 and 6.50), unfertilized structures (2.53, 1.17 and... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: Season of the year; Diets; Embryos; Fatty acids; Fertility; Omega 3; Omega 6. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13372 |
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| Sinha, Nistha. |
| The paper outlines a methodology that allows us to determine whether couples fertility is supply constrained based on the response they give to the subjective desired family size question. The central idea of the paper is that, when faced with the desired family size question, both constrained and unconstrained couples compare their demand for children with knowledge of their biological supply and unconstrained couples respond with a number while constrained couples respond with a qualitative response such as, It is Up to God (UTG), that essentially conveys the notion of demanding as many children as the supply function can yield. I then test this interpretation using data from Bangladesh. I find that controlling for demand side characteristics,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fertility; Desired fertility; Survey nonresponse; Consumer/Household Economics; J13; C25. |
| Ano: 2004 |
URL: http://purl.umn.edu/28461 |
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| Massey, M.S.; Davis, J; Ippolito, J.A.; Sheffield, R.E.. |
| Magnesium phosphates such as struvite (MgNH4PO4x6H2O) can be recovered from municipal, industrial and agricultural wastewaters. However, minimal research has been conducted on the beneficial reuse of these recovered products; conducted research has focused on low pH soils. This study determined whether recovered struvite and dittmarite (MgNH4PO4xH2O) were effective P fertilizers in alkaline soils. In addition to commercially available triple superphosphate (TSP) and certified organic rock phosphate (RP), recovered struvite, dittmarite, and a heterogeneous recovered phosphate were evaluated in a laboratory dissolution study and as fertilizers for spring wheat (Triticum aestivum L.) in a greenhouse study. Struvite and dittmarite were much more soluble... |
| Tipo: Article |
Palavras-chave: Chemistry; Fertility; Soil quality; Water. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1576/1/1532.pdf |
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| Guinnane, Timothy W.; Moehling, Carolyn M.; Grada, Cormac O. |
| In most western societies, marital fertility began to decline in the nineteenth century. But in Ireland, fertility in marriage remained stubbornly high into the twentieth century. Explanations of Irelands late entry to the fertility transition focus on the influence of the Roman Catholic Church in Irish society. These arguments are often backed up by claims that the Irish outside of Ireland behaved the same way. This paper investigates these claims by examining the marital fertility of Irish Americans in 1910 and produces three main findings. First, the Irish in America had smaller families than both the rural and urban Irish and their fertility patterns show clear evidence of fertility control. Second, despite the evidence of control, Irish-Americans... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Ireland; United States; Fertility; Demography; Immigration; Labor and Human Capital; J13; N3. |
| Ano: 2002 |
URL: http://purl.umn.edu/28386 |
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| Paskulin,Diego d'Avila; Paixão-Côrtes,Vanessa Rodrigues; Hainaut,Pierre; Bortolini,Maria Cátira; Ashton-Prolla,Patricia. |
| The TP53 gene, first described in 1979, was identified as a tumor suppressor gene in 1989, when it became clear that its product, the p53 nuclear phosphoprotein, was frequently inactivated in many different forms of cancers. Nicknamed "guardian of the genome", TP53 occupies a central node in stress response networks. The p53 protein has a key role as transcription factor in limiting oncogenesis through several growth suppressive functions, such as initiating apoptosis, senescence, or cell cycle arrest. The p53 protein is directly inactivated in about 50% of all tumors as a result of somatic gene mutations or deletions, and over 80% of tumors demonstrate dysfunctional p53 signaling. Beyond the undeniable importance of p53 as a tumor suppressor, an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: TP53; Fertility; P53 network. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600008 |
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| Registros recuperados: 126 | |
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