Genetic parameters for milk yield, age at first calving and interval between first and second calving in milk Murrah buffaloes

In the present study, data of 1,578 first lactation females, calving from 1985 to 2006 were analysed with the purpose of estimating genetic parameters for milk yield (MY), age at first calving (AFC) and interval between first and second calving (IBFSC) in dairy buffaloes of the Murrah breed in Brazil, Heritability estimates for MY, AFC and IBFSC traits were 0.20, 0.07 and 0.14, respectively. Genetic correlations between MY and AFC and IBFSC were -0.12 and 0.07, respectively, while the corresponding phenotypic correlations were -0.15 and 0.30, respectively. Genetic and phenotypic correlations between AFC and IBFSC were 0.35 and 0.37, respectively. Genetic correlation between MY and AFC showed desirable negative association, suggesting that daughters of the bulls with high breeding values for MY could reach physiological mature at a precocious age. Genetic correlation between MY and IBFSC, showed that the selection for milk production could result in the increase of calving intervals.

Buffalo milk production in brazil and colombia: Genotype by environment interaction

The objective of this study was to determine whether there is a genotype by environment interaction (GxE) for dairy buffaloes in Brazil and Colombia. The (co)variance components were estimated by using a bi-trait repeatability animal model with the REML method. Each trait consisted in the milk yield obtained in both countries. Contemporary group (herd, year and season of parity) and age at parity (linear and quadratic covariate) fixed effects, along with the additive genetic, permanent environment, and the residual random effects were included in the model. Genetic, permanent environmental and residual variance and heritabilities were different for both countries. The genetic correlations for milk yield between Brazil and Colombia were low (between 0.10 and 0.13), indicating a GxE interaction between both countries. Knowing that this interaction influences the genetic progress of buffalo populations in Brazil and Colombia, we recommend choosing sires tested in the country they will be used, along with conducting joint genetic evaluations that consider GxE interaction effects.

Test-day model for milk yield of dairy buffaloes in colombia

The test-day model is the preferred method for genetic evaluations in dairy cattle. For this study, 28372 test-day records of 1220 lactations from 1997 to 2009 were used. The (co)variance components for milk in test-day were estimated using a Uni and multiple-traits repeated animal model with the Restricted Maximum Likelihood method (REML). The Contemporary Group (herd, year, and season of parity) and the age of parity (linear and quadratic) fixed effects, and the additive genetic, permanent environmental, and residual random effects were included in the model. The heritabilities ranged between 0.06 and 0.45 during lactation. The genetic correlations were greater than 0.93. In conclusion, the test-day model is appropriate for the genetic evaluation of dairy buffaloes in Colombia.

Estudio de efectos ambientales y genéticos que influyen en la producción de leche y duración de lactación en bovinos de raza guzerat

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.

Aspectos Históricos e organizacionais da agricultura familiar no desenvolvimento da região Nova Alta Paulista

Nova Alta Paulista region, with strong aptitude for agribusiness, is one of the poorest in the state of São Paulo. However, the development of agribusiness productive chains in the region is very heterogeneous. The study aimed at analyzing how the historical background and organizational arrangements in family farming have contributed to regional development by promoting improvements in social welfare at Nova Alta Paulista region. To this end, we analyzed the case of the Associação Agrícola de Junqueirópolis - AAJ, an organization that has been successful in the search for alternative of agricultural production. Integrated to local and global market, this organization has ensured the maintenance of many farmers and generated positive externalities for the entire region. Thus, this case shows the organizational arrangement based on cooperation can be an alternative for family farmers achieve higher levels of welfare and development.

Grenada country paper

Includes bibliography

Subregional preparations for the 2004 international meeting that will undertake a full and comprehensive review of the implementation of the SIDS POA to ensure the most effective participation of Caribbean SIDS

In Part XV (Implementation Monitoring and Review);, of the Programme of Action of Small Island Developing States (SIDS POA);, which was adopted at the United Nations Global Conference on the Sustainable Development of Small Island Developing States (UNGCSIDS);, 26 April- 6 May 1994, in its paragraph 117, it is provided that the Commission on Sustainable Development (CSD); should, inter alia: Carry out an initial review of the progress achieved and steps taken to implement the Programme of Action, to be undertaken by the Commission on Sustainable Development in 1996 in accordance with its Multi-Year Thematic Programme of Work. Furthermore, in 1997, when the Commission will carry out the overall review of Agenda 21 with a view to preparing for the 1997 special session of the General Assembly, the Commission should recommend specific modalities for the full review of the Programme of Action in 1999. That full review would include the question of the convening of a second global conference in accordance with chapter 17, Section G of Agenda 21. At the twenty-second special session which convened on 27-28 September 1999 to undertake a "review and appraisal of the implementation of the Programme of Action for the Sustainable Development of Small Island Developing States", it was recommended, inter alia, that: "Although periodic reviews of certain aspects of the Programme of Action are envisaged within the context of the work of the Commission on Sustainable Development, a full and comprehensive review of these decisions and the implementation of the Programme of Action would be useful and required in 2004." In the Plan of Implementation adopted at the World Summit on Sustainable Development (WSSD);, which convened in Johannesburg, South Africa, over the period, 26 August-4 Septemeber 2002, the relevant recommendation was as follows: "Undertake a full and comprehensive review of the implementation of the Barbados Programme of Action for the Sustainable Development of Small Island Developing States in 2004, in accordance with the provisions set forth in General Assembly resolution S-22/2, and in this context requests the General Assembly at its fifty-seventh session to consider convening an international meeting for the sustainable development of small island developing States."

Renewable energy sources in Latin America and the Caribbean: situation and policy proposals

Includes bibliography

Multidimensionalidade das unidades territoriais camponesas do município de Teodoro Sampaio

Pós-graduação em Geografia - FCT

Progress in implementation of the Mauritius Strategy: Caribbean Regional Synthesis Report

The Global Conference on the Sustainable Development of Small Island Developing States (SIDS) was held in Bridgetown, Barbados, from the 25 April – 6 May 1994. This culminated in the Declaration of Barbados and the Programme of Action for the Sustainable Development of Small Island Developing States. Ten years later an International Meeting to Review Implementation of the Programme of Action for the Sustainable Development of Small Island Developing States was held in Port Louis, Mauritius, from 10–14 January 2005. This international meeting, in turn, resulted in the Mauritius Declaration and the Mauritius Strategy for the Further Implementation of the Programme of Action for the Sustainable Development of Small Island Developing States (MSI).

Revista de la CEPAL no.60

La evolución de las ideas y las políticas para el desarrollo / Gert Rosenthal. -- Políticas macroeconómicas para el crecimiento / Ricardo Ffrench-Davis. -- Flujos de capitales: lecciones a partir de la experiencia chilena / Eduardo Aninat, Christian Larraín. -- La transformación del desarrollo industrial de América Latina / José Miguel Benavente, Gustavo Crespi, Jorge Katz, Giovanni Stampo. -- Las reformas de las pensiones en América Latina y la posición de los organismos internacionales / Carmelo Mesa-Lago. -- Aportes de la antropología aplicada al desarrollo campesino / John Durston. -- Prospección de la biodiversidad: potencialidades para los países en desarrollo / Julie M. Feinsilver. -- La inversión extranjera y el desarrollo competitivo en América Latina y el Caribe / Alejandro C. Vera-Vassallo. -- La crisis del peso mexicano / Stephany Griffith-Jones.

CEPAL Review no.60

Development thinking and policies: the way ahead / Gert Rosenthal. -- Macroeconomic policies for growth / Ricardo Ffrench-Davis. -- Capital flows: lessons from the Chilean experience / Eduardo Aninat, Christian Lorrain. -- Changes In the industrial development of Latin America / José Miguel Benavente, Gustavo Crespi, Jorge Katz, Giovanni Stumpo. -- Pension system reforms in Latin America: the position of the International organizations / Carmelo Mesa-Lago. -- The contributions of applied anthropology to peasant development / John Durston. -- Biodiversity prospecting: a new panacea for development? / Julie M. Feinsilver. -- Foreign Investment and competitive development In Latin America and the Caribbean / Alejandro C. Vera-Vassallo. -- The Mexican peso crisis / Stephany Grijfìth-Jones.

Revista de la CEPAL no.25

La economía latinoamericana durante 1984: un balance preliminar / Enrique V. Iglesias. -- Las empresas transnacionales y el comercio internacional de América Latina / Eugenio Lahera. -- El papel subsidiario de la inversión externa directa en la industrialización: el sector manufacturero colombiano / Michael Mortimore. -- Políticas de estabilización y ajuste en el Cono Sur, 1974-1983 / Joseph Ramos. -- Desarrollo rural y programación urbana de alimentos / Manuel Figueroa L. -- Sociedades dependientes y crisis en América Latina: los desafíos de la transformación político-social / Germán W. Rama y Enzo Faletto. -- Cultura, discurso (autoexpresióri) y desarrollo social en el Caribe / Jean Casimir. -- Aspectos legales de la deuda pública latinoamericana: la relación con los bancos comerciales / Gonzalo Biggs.