Innovation and economic development: theoretical retrospect and prospect

Includes bibliography

Effect of superstimulatory treatments on the expression of genes related to ovulatory capacity, oocyte competence and embryo development in cattle.

Multiple ovulation (superovulation) and embryo transfer has been used extensively in cattle. In the past decade, superstimulatory treatment protocols that synchronise follicle growth and ovulation, allowing for improved donor management and fixed-time AI (FTAI), have been developed for zebu (Bos indicus) and European (Bos taurus) breeds of cattle. There is evidence that additional stimulus with LH (through the administration of exogenous LH or equine chorionic gonadotrophin (eCG)) on the last day of the superstimulatory treatment protocol, called the 'P-36 protocol' for FTAI, can increase embryo yield compared with conventional protocols that are based on the detection of oestrus. However, inconsistent results with the use of hormones that stimulate LH receptors (LHR) have prompted further studies on the roles of LH and its receptors in ovulatory capacity (acquisition of LHR in granulosa cells), oocyte competence and embryo quality in superstimulated cattle. Recent experiments have shown that superstimulation with FSH increases mRNA expression of LHR and angiotensin AT(2) receptors in granulosa cells of follicles >8 mm in diameter. In addition, FSH decreases mRNA expression of growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) in oocytes, but increases the expression of both in cumulus cells, without diminishing the capacity of cumulus-oocyte complexes to generate blastocysts. Although these results indicate that superstimulation with FSH is not detrimental to oocyte competence, supplementary studies are warranted to investigate the effects of superstimulation on embryo quality and viability. In addition, experiments comparing the cellular and/or molecular effects of adding eCG to the P-36 treatment protocol are being conducted to elucidate the effects of superstimulatory protocols on the yield of viable embryos.

La distribución geográfica de la población de América Latina y prioridades regionales del desarrollo = Geographic distribution of the population of Latin America and regional development priorities

Incluye Bibliografía

Los tipos de cambio duales y el desarrollo económico = Dual exchange rates and economic development

Publicado separadamente en cada idioma

La participación popular y los principios de desarrollo de la comunidad en el desarrollo económico y social = Popular participation and principles of community development in relation to the acceleration of economic and social development

Incluye Bibliografía

La formación de recursos humanos en el desarrollo económico y social de América Latina = The training of human resources in the economic and social development of Latin America

Incluye Bibliografía

Organización Consultiva Marítima Intergubernamental = Inter-governmental Maritime Consultative Organization (IMCO) and maritime development

Incluye Bibliografía

Algunas conclusiones relativas a la integración, la industrialización y el desarrollo económico de América Latina = Some conclusions on integration, industrialization and economic development in Latin America

Incluye Bibliografía

Argentina: crisis, adjustment policies and agricultural development, 1980-1985

Analiza las tendencias dominantes en la agricultura y en la economia hasta la crisis de los anos 70, los programas de ajuste y sus efectos en el sector, y algunas consideraciones acerca de los principales desafios y el papel que le corresponderia a la agricultura en ellos.

The external crisis, adjustment policies and agricultural development in Brazil

Includes bibliography

Costa Rica: crisis, adjustment policies and rural development

Analiza la situacion del sector agropecuario costarricense hasta la decada del 70, los problemas estructurales que mostro el patron de desarrollo seguido, las manifestaciones de la crisis y las caracteristicas de las principales politicas de ajuste que se adoptaron en 1982, asi como el impacto de estas medidas en la agricultura.

Mexico: study on the financial crisis, the adjustment policies and agricultural development

Se pasa revista al desarrollo de la economia mexicana en general y del sector agropecuario en particular, desde la segunda guerra mundial hasta la crisis de 1982.

Latin America and Caribbean development in the 1980s and the outlook for the future

Includes bibliography

Natural heritage accounts and sustainable development

Includes bibliography