Manejo de animais e pastagens em sistemas de integração silvipastoril

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Uso de indutores de brotação em mirtileiros "Duke" em Vacaria-RS.

As necessidades fisiológicas da cultura do mirtilo, em termos de necessidade de frio hibernal não são plenamente satisfeitas na região Sul do Brasil

Gastos privados com planos exclusivamente odontológicos no Brasil

OBJECTIVE: To quantify the household expenditure per capita and to estimate the percentage of Brazilian households that have spent with dental insurance. METHODS: We analyzed data from 55,970 households that participated in the research Pesquisa de Orçamentos Familiares in 2008–2009. We have analyzed the annual household expenditure per capita with dental insurance (business and private) according to the Brazilian states and the socioeconomic and demographic characteristics of the households (sex, age, race, and educational level of the head of the household, family income, and presence of an older adult in the household). RESULTS: Only 2.5% of Brazilian households have reported spending on dental insurance. The amount spent per capita amounted to R$5.10 on average, most of which consisted of private dental insurance (R$4.70). Among the characteristics of the household, higher educational level and income were associated with higher spending. São Paulo was the state with the highest household expenditure per capita (R$10.90) and with the highest prevalence of households with expenditures (4.6$1.00 and had a prevalence of less than 0.1% of households, respectively. CONCLUSIONS: Only a small portion of the Brazilian households has dental insurance expenditure. The market for supplementary dentistry in oral health care covers a restricted portion of the Brazilian population.OBJETIVO: Quantificar as despesas domiciliares per capita e estimar o percentual de domicílios brasileiros que gastaram com planos exclusivamente odontológicos. MÉTODOS: Foram analisados dados de 55.970 domicílios que participaram da Pesquisa de Orçamentos Familiares em 2008–2009. Os gastos domiciliares anuais per capita com planos exclusivamente odontológicos (empresarial e particular) foram analisados segundo os estados da federação e as características socioeconômicas e demográficas dos domicílios (sexo, idade, cor da pele e escolaridade do chefe do domicílio, renda familiar e presença de idoso no domicílio). RESULTADOS: Apenas 2,5% dos domicílios brasileiros relataram gastos com planos exclusivamente odontológicos. O valor per capita despendido somou em média R$5,10, sendo a maior parte composta por planos odontológicos particulares (R$4,70). Entre as caraterísticas do domicílio, maior escolaridade e renda estiveram associadas com maior gasto. São Paulo foi o estado com maior gasto domiciliar per capita (R$10,90) e maior prevalência de domicílios com dispêndios (4,6$1,00 e com menos de 0,1% de domicílios, respectivamente. CONCLUSÕES: Apenas uma pequena parcela dos domicílios brasileiros desembolsa com planos exclusivamente odontológicos. O mercado de odontologia suplementar na assistência em saúde bucal abrange uma restrita parcela da população brasileira

Correlation of shear strength and physicochemical properties as a criterion for the selection of accessions of Paspalum grasses.

The present study aimed to evaluate the application of shear strength and its correlations with leaf blade morphological and chemical variables as a tool capable of detecting differences between species and accessions of the genus Paspalum in the early stages of a forage plant breeding programme. A total of 13 Paspalum accessions from two species (Paspalum atratum and Paspalum regnellii) were subjected to analyses of shear strength, which also analysed the neutral detergent fibre, acid detergent fibre, lignin, and digestibility. Morphological measurements were also performed to standardize the shear strength per unit of leaf tissue. The experimental design consisted of complete randomized blocks, with four replications and eight cuts performed over 2 years. Shear strength was evaluated for its potential usefulness for detecting differences between accessions of the same species and the correlations of accessions. It was possible to use the shear strength measured with the texturometer to detect differences between species and accessions of the Paspalum genus. The results showed significant correlations of shear strength and neutral detergent fibre (r = 0.49), and negative correlations were found between digestibility and shear strength (r = -0.55). These correlations were maintained when the strength variables were standardized according to the morphological variables. Thus, shear strength can be used in the initial stages of the selection of species of the genus Paspalum

Produção de ovinos de corte em sistemas integrados.

O primeiro registro de ovinos no Brasil data de 1556, sendo estes animais trazidos pelos portugueses à época do descobrimento. Originários da Península Ibérica, eram raças lanadas de pequeno porte e extremamente rústicas (SANTOS, 2003). Por cinco séculos multiplicaram-se com mínima interferência do homem, sendo fortemente influenciados pelo processo de seleção natural, adquirindo características adaptativas e de produção para as diversas regiões do país, ficando conhecidos como raças ?locais?, ?crioulas? ou naturalizadas (MARIANTE; EGITO, 2002). A expansão da ovinocultura, que inicialmente esteve mais ligada à subsistência, exceção no Rio Grande do Sul em que se desenvolveu baseada na produção de lã, atualmente tem objetivos comerciais.bitstream/item/202758/1/CNPC-2019-Producao-de-ovinos.pd

Low level methylmercury exposure affects neuropsychological function in adults

BACKGROUND: The neurotoxic effects of methylmercury (MeHg) have been demonstrated in both human and animal studies. Both adult and fetal brains are susceptible to the effects of MeHg toxicity. However, the specific effects of adult exposures have been less well-documented than those of children with prenatal exposures. This is largely because few studies of MeHg exposures in adults have used sensitive neurological endpoints. The present study reports on the results of neuropsychological testing and hair mercury concentrations in adults (>17 yrs) living in fishing communities of Baixada Cuiabana (Mato Grosso) in the Pantanal region of Brazil. METHODS: A cross-sectional study was conducted in six villages on the Cuiaba River. Participants included 129 men and women older than 17 years of age. They were randomly selected in proportion to the age range and number of inhabitants in each village. Questionnaire information was collected on demographic variables, including education, occupation, and residence history. Mercury exposure was determined by analysis of hair using flameless atomic absorption spectrophotometry. The neurocognitive screening battery included tests from the Wechsler Memory Scale and the Wechsler Adult Intelligence Scale, Concentrated Attention Test of the Toulouse-Pierron Factorial Battery, the Manual Ability Subtests of the Tests of Mechanical Ability, and the Profile of Mood States. RESULTS: Mercury exposures in this population were associated with fish consumption. The hair mercury concentration in the 129 subjects ranged from 0.56 to 13.6 μg/g; the mean concentration was 4.2 ± 2.4 micrograms/g and the median was 3.7 μg/g. Hair mercury levels were associated with detectable alterations in performance on tests of fine motor speed and dexterity, and concentration. Some aspects of verbal learning and memory were also disrupted by mercury exposure. The magnitude of the effects increased with hair mercury concentration, consistent with a dose-dependent effect. CONCLUSIONS: This study suggests that adults exposed to MeHg may be at risk for deficits in neurocognitive function. The functions disrupted in adults, namely attention, fine-motor function and verbal memory, are similar to some of those previously reported in children with prenatal exposures

Effects of Glyphosate and its Formulation, Roundup, on Reproduction in Zebrafish (Danio rerio)

This is an open access article that is freely available in ORE or from the publisher's web site. Please cite the published version.Copyright © 2014 American Chemical SocietyRoundup and its active ingredient glyphosate are among the most widely used herbicides worldwide and may contaminate surface waters. Research suggests both Roundup and glyphosate induce oxidative stress in fish and may also cause reproductive toxicity in mammalian systems. We aimed to investigate the reproductive effects of Roundup and glyphosate in fish and the potential associated mechanisms of toxicity. To do this, we conducted a 21-day exposure of breeding zebrafish (Danio rerio) to 0.01, 0.5, and 10 mg/L (glyphosate acid equivalent) Roundup and 10 mg/L glyphosate. 10 mg/L glyphosate reduced egg production but not fertilization rate in breeding colonies. Both 10 mg/L Roundup and glyphosate increased early stage embryo mortalities and premature hatching. However, exposure during embryogenesis alone did not increase embryo mortality, suggesting that this effect was caused primarily by exposure during gametogenesis. Transcript profiling of the gonads revealed 10 mg/L Roundup and glyphosate induced changes in the expression of cyp19a1 and esr1 in the ovary and hsd3b2, cat, and sod1 in the testis. Our results demonstrate that these chemicals cause reproductive toxicity in zebrafish, although only at high concentrations unlikely to occur in the environment, and likely mechanisms of toxicity include disruption of the steroidogenic biosynthesis pathway and oxidative stress.Natural Environment Research Counci