نتایج جستجو برای: livestock waste

تعداد نتایج: 103194  

2013
Sara E. McDonnell Amy M. Treonis

The prevalence of antibiotic resistant microorganisms in the environment is not well known but could represent a challenge to maintaining public health in the future. Fecal waste from livestock facilities, where antibiotics are routinely used, is recognized as a significant source of pollution to surface waters in the United States. We collected water from the Missouri River across a winter to ...

Journal: :Journal of environmental quality 2003
Roger A Eigenberg John A Nienaber

Movement of nutrients from livestock manure handling sites has the potential to negatively impact the environment. This study was conducted using electromagnetic induction (EMI) measurements to develop apparent soil electrical conductivity (EC(a)) maps to identify regions of nutrient buildup beneath an abandoned compost site. A trailer-mounted EM-38 coupled with a global positioning satellite s...

2017
Zhenru Huang Runying Gao Nadila Bawuerjiang Yali Zhang Xiaoxu Huang Meiqin Cai

This study aimed to evaluate the intake of food and nutrients among primary, middle, and high schools students in Shanghai, and provide recommendations for possible amendments in new school lunch standards of Shanghai. Twenty schools were included in the school lunch menu survey. Of those, seven schools enrolled 5389 students and conducted physical measurement of plate waste and a questionnaire...

2015
P. J. Stevenson

It is widely assumed that food production must increase by 70% to feed the growing world population and accordingly that further industrialisation of livestock production is essential. This would result in poorer animal welfare as even with good stockmanship industrial systems generally have a low potential for delivering satisfactory welfare outcomes. In fact a large increase in food productio...

2017
Daniel S. Andersen

During the twentieth century, agricultural production strived to achieve increased food production in order to satisfy both local and export demands. In many cases, this led to increased farm sizes and an operational separation of crop and livestock production. Society fears that the trend of increasing centralization and industrialization of agriculture, specifically animal agriculture, has re...

Sh. Shokri

The major purpose of this study was to examine the advantages and implications of biogastechnology in the agriculture sector. Biogas is one of many biomass energy sources, which includeanything that was once alive and that can generate energy (except for fossil fuels, which are notrenewable). To talk of biogas is to talk of agriculture, since biogas generation starts withagricultural waste prod...

2005
K. F. Knowlton N. G. Love C. M. Parsons

One approach to reduce nutrient losses from livestock farms is to apply biological waste treatment systems such as biological nitrogen (N) removal or enhanced biological phosphorus (P) removal (EBPR) to reduce the nutrient content of land-applied waste. The EBPR process takes advantage of the ability of P-accumulating organisms (PAOs) to sequester excess P as polyphosphate granules in their cyt...

Journal: :BIO web of conferences 2021

Livestock management includes the systems of maintenance, reproduction, and waste utilization. This study aims to examine potential feed sources for ruminants (cows buffaloes) efforts maintain continuous availability associated with ruminant livestock development strategies. The data used were primary secondary sources. Furthermore, variables observed include cattle buffalo population, agricult...

Journal: :Journal of Biodiversity and Biotechnology 2023

<p>Biduri (<em>Calotropis gigantea</em>) was a plant with several benefits, namely as medicinal and textile material. Biduri wild that could grow in various types of soil conditions. The existence biduri still not fully utilized by many people. So it necessary to develop the cultivation technology take advantage this plant. This research conducted at field laboratory Jumantono...

2008
Hiraku Sasaki Jun Nonaka Kenichi Otawa Osamu Kitazume Ryoki Asano Takako Sasaki

We investigated the structure of bacterial communities present in livestock manure-based composting processes and evaluated the bacterial succession during the composting processes. Compost samples were derived separately from swine manure, dairy manure and sewage sludge. The structure of the bacterial community was analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (...

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