scholarly journals Animal Feed from Microalgae Grown on Biogas Digestate as Sustainable Alternative to Imported Soybean Meal

Author(s):  
Mohamed Elshamy ◽  
Christine Rösch

Abstract This work investigates the environmental potential to develop a circular economy solution to create benefit from agricultural waste by integrating microalgae technology into the nutrient-rich digestate (NRD) stream from anaerobic digestion plants. Different environmental benefits can be captured by algal uptake of nitrate and the scarce resource phosphorus from biogas digestate. First, unwanted excess nutrients polluting groundwater are reduced and second, the algal animal feed can substitute soybean meal (SM) imported to North-Western Europe (NWE). That allows a decentralised circular bio-economy and avoids deforestation of rainforests due to SM overseas import. Life cycle assessments were conducted based on novel data from engineers in academia and industry, acquired through pilot-scale research facilities in United Kingdom, France, and Belgium. The findings of this study highlight the environmental impacts of three different technologies with varying scales of production and offer recommendations based on sensitive analysis for more sustainable pathways. In this study, a pilot-scale bio-refinery is considered a promising solution to excess nutrients in fertilisers in the NWE and an alternative source for imported SM as an animal feed source, having a comparable environmental footprint.

2021 ◽  
Vol 7 (4) ◽  
pp. 278
Author(s):  
Delphine Grandmontagne ◽  
David Navarro ◽  
Virginie Neugnot-Roux ◽  
Simon Ladevèze ◽  
Jean-Guy Berrin

One of the challenges of the 21st century will be to feed more than 10 billion people by 2050. In animal feed, one of the promising approaches is to use agriculture by-products such as soybean meal as it represents a rich source of proteins. However, soybean meal proteins are embedded in a complex plant cell wall matrix, mostly composed of pectic polysaccharides, which are recalcitrant to digestion for animals and can cause digestive disorders in poultry breeding. In this study, we explored fungal diversity to find enzymes acting on soybean meal components. An exploration of almost 50 fungal strains enabled the identification of two strains (Aspergillus terreus and Aspergillus japonicus), which improved the solubilization of soybean meal in terms of polysaccharides and proteins. The two Aspergilli strains identified in the frame of this study offer a promising solution to process industrial food coproducts into suitable animal feed solutions.


2020 ◽  
Vol 30 (1) ◽  
pp. 37
Author(s):  
Yuli Retnani ◽  
N N Barkah ◽  
A Saenab ◽  
. Taryati

Feed is one of the important factor that affect livestock productivity, so the availability of good quality feed is a requirement for livestock development in an area. In the tropical area, providing forage as a crucial feed for ruminants was hampered by fluctuating seasons. Likewise, the availability of agricultural waste as an alternative source of feed material experiences the same constraints, easily damaged, and bulky (voluminous). Therefore, feed processing technology is needed so that it is become durable, easily stored, and easily provided for livestock. One way to overcome this is to utilize technology for making wafers. Information regarding technology for making animal feed wafers in Indonesia is still limited. This paper reviews a number of studies that discuss the development of wafer processing technology, types of wafers, the main components of wafer compilers, wafer manufacturing processes, reactions that occur during wafer manufacturing, nutrient quality of various wafers, and the results of research on the use of wafers for feed livestock. Wafers are feeds that are processed using heat and pressure, so that a solid, compact, and high density product is formed. Feed wafer technology is a modification of cube and block feed. Wafers are divided into feed wafers, feed supplement wafers, and complete feed wafers. Feed wafers can be used instead of concentrates. Feed supplement wafers are high in energy and protein. Complete feed wafers contain energy, protein, fiber, and complete minerals that have been adapted to the daily nutritional needs of livestock. Feed wafer processing technology can be one of the strategies to provide feed with a constant composition of nutrients throughout the season and increase production and feed efficiency.


Author(s):  
Muhammad Irfan Said ◽  
Muhammad Hatta ◽  
St. Rohani

Knowledge of animal feed and waste is an important component in building the livestock industry. The aspectof availability of feed and the production of livestock waste is one of the problems by cattle farmers in MattirowalieVillage, Libureng Sub-District, Bone Regency. Efforts to increase the capacity of farmers in solving these problems areneeded to increase the productivity of their livestock. This program aims to increase knowledge for farmers of beef cattlein processing agricultural and livestock waste into feed products and processing them into organic fertilizer. This activityis an implementation of the Program Pengabdian Kepada Masyarakat Unhas (PPMU) Program Kemitraan Masyarakat(PKM). This activity was carried out in Mattirowalie Village, Libureng Sub-District, Bone Regency. The partner groupsinvolved as targets were the "Kurusumange" and "Masempo Dalle" farmers group (FG). The number of trainingparticipants involved in this activity is approximately 25 peoples, overall were cattle farmers with 2-3 cattle/person. Theimplementation of technology introduction programs was carried out in the form of training programs and technologyassistance. Several technology packages that have been implemented were: 1) ammoniation technology, 2) complete feedsilage fermentation technology, 3) manufacturing of local microorganism (LM) technology and 4) Urea Molasses Block(UMB) manufacturing technology. The results of the implementation of activities to increase the capacity of partnermembers in processing agricultural waste and livestock into alternative animal feed and organic fertilizer


2017 ◽  
Vol 28 (2) ◽  
pp. 523
Author(s):  
Juan Sierra Márquez ◽  
Lucellys Sierra Márquez ◽  
Jesus Olivero-Verbel

The objective of this research was to highlight the economic importance of the optimal use of products and byproducts of oil palm. In Colombia, productive crops per hectare can generate, over one year, an average of 3.14 tons of oil, and up to 21.68 t of solid and liquid waste when the plant is on a productive stage. These data allowed the researcher to estimate that more than nine million of t of solid and liquid waste was produced from the 450 131 ha present in 2014, in Colombia; the produced biomass was used to generate energy and steam, releasing carbon dioxide back again into the environment. These residues have great potential in many industries, some to be developed, therefore, it is of special importance to try to maximize the use of waste produced by oil palm production, to generate economic and environmental benefits. An example of this is the palm kernel cake, with a nutritional potential in animal feed, fiber in the biocompound industry, biomass and stipe in the timber industry, glycerol, biodiesel, and liquid effluents in the chemical and biotechnological industry. The use of these raw materials may help to establish a positive balance in the cultivation of this species of oil palm in the country. 


2021 ◽  
pp. 0734242X2110644
Author(s):  
MA Monayem Miah ◽  
Md Enamul Haque ◽  
Richard W Bell ◽  
Md Wakilur Rahman ◽  
Sohela Akhter ◽  
...  

The use of organic fertilisers and soil amendments are almost universally recommended for improving the organic matter levels and maintaining soil health, but few studies documenting the actual availability and quality of such materials on smallholder farms are available. We selected a case study of 300 households from northern and southern Bangladesh to assess the types of waste materials available for recycling and their usage patterns at household level and we applied a novel approach to empirically identify household waste as input inefficiency in a production context. Northern districts have highly intensive farming systems whereas southern districts have low intensity farming. The total amount of agricultural waste produced at household level was estimated at 822 kg per month. Cow dung contributed about 65% of the total waste followed by animal feed refusal waste (11%), garbage (7%) and kitchen waste (6%). Most of the farmers utilised cow dung and wastes as organic fertiliser and lesser amounts as cooking fuel. Econometric analysis shows that the number of cattle and small ruminant per holding, total area of cultivated land and family size were significant factors that influence the amount of waste production at household level. Each household can reduce the chemical fertiliser cost by Tk. 1463 (US$ 17.84) per month by using compost prepared from household waste. There were ample opportunities for compost/vermicomposting and potential markets. The Department of Agricultural Extension from the public sector and private sector agents might motivate farmers to harvest the potential benefits of agricultural waste through effective management and utilisation.


2016 ◽  
Vol 37 (2) ◽  
pp. 933
Author(s):  
Camila Carvalho da Paz ◽  
Aníbal Coutinho do Rêgo ◽  
Cristian Faturi ◽  
Luiz Fernando De Souza Rodrigues ◽  
José Adérito Rodrigues Filho ◽  
...  

Protein nutrition plays a key role in ruminant performance and represents the largest proportion of costs in animal feed. The present study evaluated whether the roughage portion of Santa Inês sheep diets could be supplemented with different ratios of tropical kudzu as a protein source and assessed the best inclusion level of tropical kudzu based on digestibility, intake, nitrogen balance and feeding behavior. Twenty rams were evaluated during the 20-day experimental period, and they were fed formulated diets with a roughage portion (60%) consisting of Elephant grass and tropical kudzu, the latter supplemented at different concentrations (0, 25, 50 and 75% on a dry matter basis). Forty percent of the concentrate portion consisted primarily of ground corn and soybean meal adjusted to obtain an isoproteic diet. Chemical and bromatological analyses, as well as, analyses to assess intake, digestibility, nitrogen balance and feeding behavior, were conducted. No statistically significant differences were found (P>0.05) for the intake and digestibility of dry matter (DM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), hemicellulose (HEMI), non-fiber carbohydrates (NFC) and total digestible nutrients (TDN) or for the feeding behavior (feeding, rumination and idle times in h/day) and nitrogen balance between the diets studied. Thus, tropical kudzu can be considered a feed alternative to supplementation with prime protein foods (in this case, soybean meal) in sheep diets.


2019 ◽  
Vol 11 (16) ◽  
pp. 4418 ◽  
Author(s):  
Thomas Dax ◽  
Dachang Zhang ◽  
Yanying Chen

After World War II, the economic recovery of Western Europe implied a swift economic transition for all regions, including the area of the Alps, although affecting various parts at different paces and stages. The resulting out-migration led to population decline in some mountain valleys and regions since the 1950s. Such negative population development trends are widespread across mountain areas of the world, including China, where out-migration started after its rural reform in the 1970s. The effect was in some cases even more significant than in the Alps, with the first villages being deserted in the 1980s. Current estimations report about 380,000 rural villages in China being abandoned between 2000–2016, particularly in its mountain regions. While lower population densities might alleviate the pressures on ecology and contribute to environmental benefits, these movements aggravate a spiraling-down process of local economies and culture. In the Alps, many regions that were facing challenges of out-migration and economic weaknesses focused on local initiatives, including agritourism schemes that provided both economic incentives and stability to involved mountain farmers, and the continuation of local land management systems. However, China’s interest for promoting rural action and tourism-oriented farm diversification only started more recently, with a range of rural tourism and agricultural tourism initiatives emerging. This paper focuses on lessons from successful initiatives in the Alps that might induce and strengthen China’s search for elaborating agritourism activities in mountain areas. In consequence, agritourism might be assessed as a contribution to mitigate out-migration from mountain regions and a core element of the future sustainable development of the Alps and the Chinese countryside.


2021 ◽  
Vol 6 (5) ◽  
pp. 796-801
Author(s):  
Fitria Tsani Farda ◽  
Farida Fathul ◽  
Erwanto Erwanto ◽  
Etha Azizah Hasiib

The purpose of this service activity is to increase the knowledge and skills of breeders in Marga Agung Village, Jati Agung Subdistrict, South Lampung Regency regarding various types of forage, compiling ration formulations based on local feed, and processing feed from agricultural waste. The main issues that become priority are (1) the ability of breeders to prepare beef cattle feed rations; (2) utilization of feed processing technology to improve the nutritional quality of animal feed; and (3) livestock businesses that have not been able to boost the farmer economy. Through the Participatory Rural Appraisal method, this activity was able to increase the knowledge and skills of breeders in preparing local feed-based ration formulations and processing feed from agricultural waste.


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