Suplementación con hierro en dosis única semanal a mujeres embarazadas, de Morelos, México

Resumen Fundamento: El déficit de hierro es la carencia nutricional más frecuente en el mundo. Afecta principalmente a niños y mujeres en edad fértil, especialmente a embarazadas. Se han implementado múltiples estrategias para combatirla pero el problema persiste. Una alternativa es el uso de esquemas de suplementación intermitente que aunque controvertido, ha dado resultados positivos. Objetivo: Evaluar la utilidad de la suplementación con hierro en dosis única semanal en mujeres embarazadas. Materiales y métodos: Se comparó la concentración de hemoglobina en sangre de 107 mujeres embarazadas que siguieron dos esquemas de suplementación con hierro: dosis única semanal y dosis diaria. Se realizaron determinaciones basales y finales de hemoglobina. Resultados: La concentración de hemoglobina final (después de 10 semanas de suplementación) en el total de mujeres embarazadas, fue similar a la basal (P>0,05). En cambio en las anémicas (n=20), hubo un incremento estadísticamente significativo (P0,05). Conclusiones: El comportamiento fue similar en los dos grupos de estudio: la dosis única semanal de hierro fue tan efectiva como la diaria en la prevención y corrección de esta deficiencia en embarazadas

ORIGINAL ARTICLES

The effect of marigold (Tagetes erecta) as natural carotenoid source for the pigmentation of goldfish (Carassius auratus L.). ABSTRACT This study was conducted to evaluate the effects of diets containing 0, 100, 200 and 300 mg of carotenoid/kg diet from marigold meal on skin pigmentation, growth, feed utilization and survival of goldfish (Carassius auratus), with average initial weight of 1.8 g for a rearing period of 63 days. The pigmentation degree in skin of goldfish increased significantly with increasing inclusion of marigold meal at 200 mg of carotenoid/kg diet. However, the marigold inclusion over that level did not lead to more total carotenoid accumulation in the skin of fishes. No significant difference was observed in the survival, growth or feed utilization of the fishes. The present results demonstrate that marigold meal can be successfully used as an alternative natural carotenoid source in goldfish diets. Our data indicates that 200 mg of carotenoid/kg diet from marigold meal is a suitable dietary level to ensure good pigmentation, acceptable growth and feed utilization in goldfish

The database of the PREDICTS (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems) project

The PREDICTS project—Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)—has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3.2 million records sampled at over 26,000 locations and representing over 47,000 species. We outline how the database can help in answering a range of questions in ecology and conservation biology. To our knowledge, this is the largest and most geographically and taxonomically representative database of spatial comparisons of biodiversity that has been collated to date; it will be useful to researchers and international efforts wishing to model and understand the global status of biodiversity