نتایج جستجو برای: livestock management

تعداد نتایج: 870596  

2017
Zach J. Miller Fabian D. Menalled Upendra M. Sainju Andrew W. Lenssen Patrick G. Hatfield

Crop diversification and integration of livestock into cropping systems may improve the economic and environmental sustainability of agricultural systems. However, few studies have examined the integration of these practices in the semiarid areas of the Northern Great Plains (NGP). A 3-yr experiment was conducted near Bozeman, MT, to compare the effects of crop rotation diversity and weed manag...

2012
Soumaïla Pagabeleguem Mamadou Sangaré Zakaria Bengaly Massouroudin Akoudjin Adrien M. G. Belem Jérémy Bouyer

BACKGROUND In sub-Saharan countries infested by tsetse flies, African Animal Trypanosomosis (AAT) is considered as the main pathological constraint to cattle breeding. Africa has known a strong climatic change and its population was multiplied by four during the last half-century. The aim of this study was to characterize the impact of production practices and climate on tsetse occurrence and a...

2011
Beatrix von Wissmann Noreen Machila Kim Picozzi Eric M. Fèvre Barend M. deC. Bronsvoort Ian G. Handel Susan C. Welburn

BACKGROUND Trypanosomiasis is regarded as a constraint on livestock production in Western Kenya where the responsibility for tsetse and trypanosomiasis control has increasingly shifted from the state to the individual livestock owner. To assess the sustainability of these localised control efforts, this study investigates biological and management risk factors associated with trypanosome infect...

2008
Ann C. Wilkie

M anagement of livestock wastes can affect greenhouse gas emissions through attenuating both methane and nitrous oxide emissions, as well as by displacing carbon dioxide emissions from fossil fuel use that can be avoided through biogas production and use. Methane is naturally produced from the anaerobic decomposition of livestock manure and is a potent greenhouse gas with 21 times the greenhous...

2008
C. Dubé C. Ribble D. Kelton B. McNab A. Rivera

Introduction Recognizing the importance of livestock movements in the spread of contagious diseases, various countries in the world have developed livestock movement databases. Social network analysis techniques have recently been applied to study such databases as this technique has the advantage of allowing the study of the interactions among all pairs of livestock holdings that are formed fo...

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