نتایج جستجو برای: livestock production activities

تعداد نتایج: 970045  

Journal: :Animal : an international journal of animal bioscience 2010
M Gill P Smith J M Wilkinson

Livestock contribute directly (i.e. as methane and nitrous oxide (N2O)) to about 9% of global anthropogenic greenhouse gas (GHG) emissions and around 3% of UK emissions. If all parts of the livestock production lifecycle are included (fossil fuels used to produce mineral fertilizers used in feed production and N2O emissions from fertilizer use; methane release from the breakdown of fertilizers ...

2017
Elsa Lamy Sofia van Harten Elvira Sales-Baptista Maria Manuela Mendes Guerra André Martinho de Almeida

Numerous factors affect livestock production and productivity. In this chapter we will address those that are of paramount importance: climate, nutrition, and health aspects. In initial section we will review the effects of climate on livestock productivity and provide examples of livestock adaptation to climate constraints such as the Bos indicus cattle breeds adapted to hot weather and the fa...

2005
Christine Eveland Alfons Weersink Wayne Caldwell Wanhong Yang

This paper presents an overview of the trends in building permits issued for livestock facilities between 1996 and 2001 for 42 municipalities in the livestock intensive region of southwestern Ontario. Most of the permits were issued for barns less than 100 livestock units. Most of the permits for large facilities (larger than 500 livestock units) were exclusively for hog farms. There was no spa...

Journal: :Bioresource technology 2009
Matias Vanotti Ariel Szogi Ma Pilar Bernal José Martinez

This Special Issue of Bioresource Technology is dedicated to selected contributions presented at the international Workshop: ‘‘Livestock waste treatment systems of the future: A challenge to environmental quality, food safety, and sustainability,” held 2–4 April, 2008, in Florence, South Carolina (USA) and sponsored by the OECD (Organisation for Economic Co-operation and Development), Cooperati...

2002
ABDUL B. KAMARA

which dominates most of the economies in the region, relies heavily on the livestock subsector for its contribution to the gross domestic product (GDP), estimated at 32 percent in the last decades for the region as a whole (Winrock International 1992). The region's growing population relies heavily on livestock products for their daily dietary requirement. The provision of draught power and man...

2003
Lyubov A. Kurkalova Helen H. Jensen

A representative sample of 49 state and collective farms in Ukraine provides data in physical units on livestock and crop production and input use for 1989-92. The changes in production efficiency for beef, pork, dairy, winter wheat, grain, and potato production, investigated using stochastic frontier methods, show declining technical efficiency in livestock production and especially low margin...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Petr Havlík Hugo Valin Mario Herrero Michael Obersteiner Erwin Schmid Mariana C Rufino Aline Mosnier Philip K Thornton Hannes Böttcher Richard T Conant Stefan Frank Steffen Fritz Sabine Fuss Florian Kraxner An Notenbaert

Livestock are responsible for 12% of anthropogenic greenhouse gas emissions. Sustainable intensification of livestock production systems might become a key climate mitigation technology. However, livestock production systems vary substantially, making the implementation of climate mitigation policies a formidable challenge. Here, we provide results from an economic model using a detailed and hi...

2007
J. Otte E. Silbergeld

Because of human and livestock population growth, changes in livestock production, the emergence of worldwide agro-food networks, and significant changes in personal mobility, human populations increasingly share a global commons of disease risk, among themselves and with domestic and wild animal species. To elucidate the linkage between livestock production and global public health, this paper...

Hadi Fathi Mohammad Karim Motamed Reza Movahedi Samira Jeyhooni

The aim of this study was to investigate the role of livestock cooperatives in improving economic status of animal holders in Hamedan province. The study has used a surveying methodology. For gathering data a structured questionnaire was used and its reliability was calculated by Cronbach's Alpha test and it was (α=0.80). The research samples consisted of 300 animal holders (beef cattle breeder...

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