548 resultados para RAZA


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There were analyzed 4757 complete lactations of the Murrah breed, daughters of 187 bulls, with the goal of verifying the viability upon employing the test-day (PDLC), on substitution of the milk yield at 305th day of lactation (PL305), in the genetic evaluations. The components of variance for the PDLC1 to PDLC9 and for the PL305 were estimated in uni-traits analysis according to maximum restricted likelihood method. The used model included the genetic direct additive random effects, of residual and permanent environment. There were considered as fixed effects, the contemporary group and the number of milkings and the age of the cow at the moment of parity co-variable (quadratic and linear effect). The contemporary groups were constituted by the herd-year-month of control for the PDLC and by herd-year-epoch of parity for PL305. The estimates of heritability for the PDLC and PL305 were 0.12 to 0.23 and 0.22, respectively. The correlations of order of the predicted genetic values for the 187 bulls, obtained between the PDLC and the PL305, were from moderate to high, varying from 67.74 to 83.12. From the minimum selection of the 10% of the best bulls relating to the predicted genetic value for the PL305, the coincidence among the classification of these animals was over 68%, when evaluated by the PDLC3,PDLC4,PDLC5 and PDLC6. Upon selecting the 5% of the best animals that coincidence presented a lower value.

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Objective of present work was study a influence of environmental and genetic effects over characteristics of milk total production (PL) and lactation duration (DL), from 2572 lactations of 477 Guzerat cows, collected since 1957 to 2002, in Rio de Janeiro State. Environmental effects were analyzed by an statistical model that include male randomized effect, fixed effect of contemporary group, and the (co)variables age of cow (lineal and quadratic) and lactation duration. The contemporary group had significant effect just for PL. Bayesian inference was used to obtain estimatives of genetic parameters over an animal model, in which was included as fixed effect the contemporary group and the covariables age of cow (linear and quadratic). The estimates of heritability and repeatability were 0.36 and 0.75 for PL and 0.29 and 0.36 for DL, respectively. The estimated genetic correlation was 0.97. The heritability estimates for PL and DL were moderate, indicating that it is possible answer to the selection of the characteristics under study. The genetic correlation was high and indicates that selection for increase milk production will be accompanied with increase in lactation duration.

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Incluye Bibliografía

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Programa de doctorado Clínica y Terapéutica Animal

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Programa de Medicina y Sanidad Animal

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Programa de doctorado: Clínica e investigación terapeútica.

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Directores: Marisa Ana Andrada Borzollino y Pedro Manuel Herráez Thomas. Colaboración, Asociación de Criadores de Cochino Negro Canario

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Der spanische Diktator Francisco Franco war sich der Bedeutung audiovisueller Produkte zu Propagandezwecken für die Sicherung seines Regimes sehr bewusst. Kurz nach der Machtergreifung verfasste er das Drehbuch für den Film "Raza". Die Musik von Manuel Parada ist ein glänzendes Beispiel für die Wirkungsmacht der musikalischen Ebene des Films zur Herstellung und Verstärkung der Grundaussage im Film.

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Angel Pulido Fernández

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La Nación y sus Otros, reúne una serie de escritos que Rita Laura Segato ha producido a lo largo de quince años. La totalidad de los ensayos que conforman este libro presentan un análisis crítico sobre la política de identidades globalizadas y sobre el impacto de las mismas en países como Brasil y Argentina principalmente. La autora invita, a través de las páginas del libro, a la defensa de un mundo radicalmente plural en el cual prevalezca la diferencia profunda entre opciones culturales. Comprender críticas como las presentadas sitúa al lector o lectora en el contexto político actual; pensar las Políticas de Identidad involucra reflexionar sobre el proceso de globalización en el cual están circulando.

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En esta ponencia hablo de los cambios por que pasaron los estudios feministas y homosexuales en Brasil desde el início de los 1980, y como se dió la incorporación de los estudios de género, que, de la manera como ocurrieron en Brasil, provocaron una continuidad histórica entre los feminismos y estudios homosexuales de entonces, y los estudios de género con sus variaciones (del cuerpo, queer, etc). Para eso, trato de retomar algunos de los principales conceptos y obras que marcaron tales cambios en el panorama internacional y nacional, y como posibilitaron importantes avances no solo para los feminismos, como para las Ciéncias Sociales y Humanidades en general. De esa manera, pretendo comentar también, como cuerpo, género, raza, se relacionaron y entrecruzan en los distintos momentos de ese recorrido/trayecto, hasta investigaciones más recientes