Related items
Showing items related by metadata.
-
DocumentOther documentManejo de la regeneración natural de especies arbóreas nativas para la formación de sistemas Silvopastoriles en bosques secos del sureste de Brasil 2002
Also available in:
No results found.La deforestación para el establecimiento de monocultivos forrajeros ha sido empleada en grandes extensiones en Brasil. Esta práctica provoca impactos negativos sobre el medio ambiente (biodiversidad, CO2, agua) y la producción animal (degradación de pastos). Los sistemas silvopastoriles (SSP) vienen tornándose una alternativa sustentable para la producción animal, integrando leñosas arbóreas, pasturas y animales. El uso de la regeneración natural de especies de árboles nativos invasores de las p asturas, como Bolsa de Pastor (Zeyhera tuberculosa) y Aroeira (Myracrodruon urundeuva), puede ser una opción sustentable para el establecimiento de SSP, proporcionando impactos positivos en términos ambientales y económicos -
DocumentOther documentVariación genotípica en la composición química y digestibilidad de Trichanthera gigantea 2002
Also available in:
No results found.Se caracterizaron procedencias de nacedero (Trichanthera gigantea), en términos de su morfología, producción y calidad forrajera, a los ocho meses de establecidas en Cali, Colombia. Se determinó la composición química, digestibilidad, fermentabilidad y presencia de compuestos secundarios. La información se analizó utilizando técnicas univariadas y multivariadas (varianza, correlación, componentes principales, análisis de conglomerados). Las variables de rendimiento y calidad se integraron en índ ices, para comparar las procedencias y seleccionar materiales sobresalientes. Se encontraron diferencias genotípicas entre procedencias, principalmente en rasgos morfológicos y de rendimiento forrajero. No obstante, la capacidad de fermentación fue el carácter de mayor aporte a la variabilidad genética de la colección, la cual estuvo asociada al origen geográfico de las procedencias. En particular fueron de mayor fermentabilidad las del Valle de Cauca, Colombia, mientras que los materiales Venez olanos presentaron los niveles más bajos de fermentación -
No Thumbnail AvailableDocumentOther documentEl efecto de los taninos de especies leñosas forrajeras sobre la utilización de nitrógeno por bovinos 1999
Also available in:
No results found.Se utilizó un nivel creciente de reemplazo (0: 100, 33: 67, 67: 33 y 100: 0) de Gliricida sepium por Calliandra calothyrsus, como suplemento a una dieta básica de King Grass (Pennisetum purpureum x P. typhoides), para simular una concentración creciente de taninos en la dieta de toretes. C. calothyrsus tiene menor digestibilidad in vitro de la materia seca (30.2 vs 62.1%) y mayores niveles de taninos condensados (18.5 vs 1.8 g kg-1 materia seca) que G. sepium. A medida que se incrementó el nivel de C. calothyrsus, se redujo la ingesta de N, se incrementó el N fecal y se redujeron el N urinario, el N absorbido y el N retenido. Sin embargo, la eficiencia de utilización del N absorbido se incrementó. En rumiantes, el uso de una mezcla de forrajes con diferentes concentraciones de taninos puede mejorar la eficiencia de utilización del N absorbido e incrementar la excreta fecal del N.
Users also downloaded
Showing related downloaded files
-
Book (series)FlagshipThe State of Food Security and Nutrition in the World 2021
Transforming food systems for food security, improved nutrition and affordable healthy diets for all
2021In recent years, several major drivers have put the world off track to ending world hunger and malnutrition in all its forms by 2030. The challenges have grown with the COVID-19 pandemic and related containment measures. This report presents the first global assessment of food insecurity and malnutrition for 2020 and offers some indication of what hunger might look like by 2030 in a scenario further complicated by the enduring effects of the COVID-19 pandemic. It also includes new estimates of the cost and affordability of healthy diets, which provide an important link between the food security and nutrition indicators and the analysis of their trends. Altogether, the report highlights the need for a deeper reflection on how to better address the global food security and nutrition situation.To understand how hunger and malnutrition have reached these critical levels, this report draws on the analyses of the past four editions, which have produced a vast, evidence-based body of knowledge of the major drivers behind the recent changes in food security and nutrition. These drivers, which are increasing in frequency and intensity, include conflicts, climate variability and extremes, and economic slowdowns and downturns – all exacerbated by the underlying causes of poverty and very high and persistent levels of inequality. In addition, millions of people around the world suffer from food insecurity and different forms of malnutrition because they cannot afford the cost of healthy diets. From a synthesized understanding of this knowledge, updates and additional analyses are generated to create a holistic view of the combined effects of these drivers, both on each other and on food systems, and how they negatively affect food security and nutrition around the world.In turn, the evidence informs an in-depth look at how to move from silo solutions to integrated food systems solutions. In this regard, the report proposes transformative pathways that specifically address the challenges posed by the major drivers, also highlighting the types of policy and investment portfolios required to transform food systems for food security, improved nutrition, and affordable healthy diets for all. The report observes that, while the pandemic has caused major setbacks, there is much to be learned from the vulnerabilities and inequalities it has laid bare. If taken to heart, these new insights and wisdom can help get the world back on track towards the goal of ending hunger, food insecurity, and malnutrition in all its forms. -
BookletCorporate general interestEmissions due to agriculture
Global, regional and country trends 2000–2018
2021Also available in:
No results found.The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018. -
Book (stand-alone)Technical bookThe future of food and agriculture - Trends and challenges 2017
Also available in:
No results found.What will be needed to realize the vision of a world free from hunger and malnutrition? After shedding light on the nature of the challenges that agriculture and food systems are facing now and throughout the 21st century, the study provides insights into what is at stake and what needs to be done. “Business as usual” is not an option. Major transformations in agricultural systems, rural economies, and natural resources management are necessary. The present study was undertaken for the quadrennial review of FAO’s strategic framework and for the preparation of the Organization Medium-Term plan 2018-2021.