Soil Fertility and Animal Production in the Tropics

2015 ◽  
pp. 179-194
Author(s):  
W. Holmes
Keyword(s):  
Soil Fertility ◽  
Animal Production ◽  
The Tropics

scholarly journals Foreword: Sustainable animal production in the tropics: farming in a changing world

animal ◽  
2012 ◽  
Vol 6 (5) ◽  
pp. 705-706 ◽  
Author(s):  
N. Mandonnet ◽  
M. Mahieu ◽  
M. Boval
Keyword(s):  
Animal Production ◽  
The Tropics ◽  
Changing World

scholarly journals Influence of soil fertility on waterlogging tolerance of two Brachiaria grasses

2015 ◽  
Vol 33 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Juan De la Cruz Jiménez ◽  
Juan Andrés Cardoso ◽  
David Arango-Londoño ◽  
Gerhard Fischer ◽  
Idupulapati Rao
Keyword(s):  
Soil Fertility ◽  
Nutrient Availability ◽  
Negative Impact ◽  
Nutrient Content ◽  
Soil Conditions ◽  
Soil Drainage ◽  
Waterlogging Tolerance ◽  
Waterlogged Soil ◽  
Fe And Mn ◽  
The Tropics

As a consequence of global warming, rainfall is expected to increase in several regions around the world. This, together with poor soil drainage, will result in waterlogged soil conditions. <em>Brachiaria</em> grasses are widely sown in the tropics and, these grasses confront seasonal waterlogged conditions. Several studies have indicated that an increase in nutrient availability could reduce the negative impact of waterlogging. Therefore, an outdoor study was conducted to evaluate the responses of two <em>Brachiaria</em> sp. grasses with contrasting tolerances to waterlogging, <em>B. ruziziensis </em>(sensitive) and <em>B. humidicola</em> (tolerant), with two soil fertility levels. The genotypes were grown with two different soil fertilization levels (high and low) and under well-drained or waterlogged soil conditions for 15 days. The biomass production, chlorophyll content, photosynthetic efficiency, and macro- (N, P, K, Ca, Mg and S) and micronutrient (Fe, Mn, Cu, Zn and B) contents in the shoot tissue were determined. Significant differences in the nutrient content of the genotypes and treatments were found. An increase of redoximorphic elements (Fe and Mn) in the soil solution occurred with the waterlogging. The greater tolerance of <em>B. humidicola</em> to waterlogged conditions might be due to an efficient root system that is able to acquire nutrients (N, P, K) and potentially exclude phytotoxic elements (Fe and Mn) under waterlogged conditions.  A high nutrient availability in the waterlogged soils did not result in an improved tolerance for <em>B. ruziziensis</em>. The greater growth impairment seen in the <em>B. ruziziensis</em> with high soil fertility and waterlogging (as opposed to low soil fertility and waterlogging) was possibly due to an increased concentration of redoximorphic elements under these conditions.

scholarly journals Pastures for animal production in the Tropics: importance, management, criteria and methodological progress

2010 ◽  
Vol 1 (2) ◽  
pp. 429-430
Author(s):  
M. Boval ◽  
E. A. Laca ◽  
P. C. Carvalho ◽  
R. Dixon
Keyword(s):  
Animal Production ◽  
The Tropics

scholarly journals Manioc peel and charcoal: a potential organic amendment for sustainable soil fertility in the tropics

2004 ◽  
Vol 41 (1) ◽  
pp. 15-21 ◽  
Author(s):  
St�phanie Topoliantz ◽  
Jean-Fran�ois Ponge ◽  
Sylvain Ballof
Keyword(s):  
Soil Fertility ◽  
Organic Amendment ◽  
The Tropics

scholarly journals Accessing the nutritional composition and phytochemical screening of Panicum maximum and Newbouldia laevis leaves

2020 ◽  
Vol 40 (1) ◽  
pp. 161-167
Author(s):  
A. O. Yusuf ◽  
O. S. Sowande ◽  
O. M. Sogunle ◽  
V. A. Akinbami ◽  
O. O. Oyebanji ◽  
...  
Keyword(s):  
Veterinary Medicine ◽  
Crude Protein ◽  
Nutritional Composition ◽  
Animal Production ◽  
Panicum Maximum ◽  
Ether Extract ◽  
Phytochemical Screening ◽  
Crude Fibre ◽  
Dry Seasons ◽  
The Tropics

Ruminant livestock in most parts of the tropics graze extensively on naturally growing forages which are poor in quality. These tropical forages compared to those in the temperate, support lower levels of ruminant animal production mainly because they contain less nitrogen and are less digestible. The quality and quantity of these grasses become more critical in the dry seasons and thereby imposing more serious constraint to the development and productivity of these animals. Therefore, a study was conducted to access nutritional composition of Panicum maximum and Newbouldia laevis. Phytochemical screening of Newbouldia laevis was also carried out. Newbouldia laevis had higher crude fibre, ether extract and crude protein compared to Panicim maximum. The phytochemical screening revealed the presence of Tannin, Alkaloids, Flavonoids and Saponnin in Newbouldia laevis. The percentages of tannin, alkaloids, flavonoids and saponin in the Newbouldia laevis were 11.5, 52.07, 3.1 and 0.64, respectively while none was recorded for Panicum maximum. The relatively high crude fibre, ether extract and crude protein values for both plants s appeared satisfactory for animal production. Also, the presence of the phytochemicals in the plant showed it importance in ethno veterinary medicine and pharmacology.

scholarly journals Farmed animal production in tropical circular food systems

Food Security ◽  
2021 ◽  
Author(s):  
Simon Oosting ◽  
Jan van der Lee ◽  
Marc Verdegem ◽  
Marion de Vries ◽  
Adriaan Vernooij ◽  
...  
Keyword(s):  
Food Security ◽  
Crop Production ◽  
Food Systems ◽  
Crop Residues ◽  
Food System ◽  
Livestock Production ◽  
Animal Production ◽  
Poor People ◽  
Nitrogen And Phosphorus ◽  
The Tropics

AbstractIn the discourse about the development of farmed animal production (terrestrial livestock production and aquaculture) in the tropics, two important food system outcomes emerge: (1) to supply animal-sourced food (ASF) at a level that suffices healthy future diets, including for poor people, and (2) to contribute to climate change mitigation and minimize pollution with nitrogen and phosphorus. Livestock production and aquaculture contribute to food security directly by increasing producers’ food diversity and availability, but also that of urban consumers, and indirectly through income generation and increased farm resilience. Recently, circularity has come to the fore as an integrated approach to food system development. Circularity has four cornerstones: (1) food crops have highest priority (which implies no food-feed competition), (2) avoid losses, (3) recycle waste and (4) use animals to unlock biomass that humans cannot eat. In this review, the role of farmed animals in circular food systems in the tropics is presented in four case studies and the impacts of circularity on food security and environmental impact mitigation are discussed. The cases are ruminants in grazing systems in West Africa and in Colombia, fish in pond aquaculture in general, and land-limited dairy production in Indonesia. Additionally, options for novel protein sources for use in livestock and fish feeding are presented. It is concluded that farmed animals are important in circular food systems because of their use of land unsuited for crop production, their upgrading of crop residues, and their supply of manure to crop production. Nevertheless, the increasing demand for ASF puts pressure on important characteristics of circularity, such as minimizing food-feed competition, maximization of use of waste streams in feed, and the value of manure for fertilization. Hence, in line with conclusions for Western countries, maximum circularity and sustainability of food systems can only be achieved by optimizing the population size of animals. Thus, a sustainable contribution of ASF production to global food security is complex and in not only a technical matter or outcome of an economic process balancing supply and demand. It requires governance for which public, private, and social actors need to partner.

Sign in / Sign up

Export Citation Format

Share Document