Abasi A, Fazaeli H, Zahedifar M, Mirhadi A, Gerami A, Teymournejhad N and Alavi M, 2015. Iran's chemical composition tables of livestock and poultry. Tehran, Iran. (In Persian).
Alam M, Alam M and Islam K, 2005. Energy flow in agriculture: Bangladesh. American Journal of Environmental Sciences 1(3): 213-220.
Clark J, Beede D, Erdman R, Goff J, Grummer R, Linn J, Pell A, Schwab C, Tomkins T and Varga G, 2001. Nutrient requirements of dairy cattle. National Academies Press, Washington DC, USA.
Corré W, Schröder JJ and Verhagen A, 2003. Energy use in conventional and organic farming systems. Paper presented at the Proceedings of the Open Meeting of the International Fertiliser Society, London.
Dalgaard T, Halberg N and Porter JR, 2001. A model for fossil energy use in Danish agriculture used to compare organic and conventional farming. Agriculture, Ecosystems and Environment 87(1): 51-65.
Dovì VG, Friedler F, Huisingh D and Klemeš JJ, 2009. Cleaner energy for sustainable future. Journal of Cleaner Production 17(10): 889-895.
Esengun K, Gündüz O and Erdal G, 2007. Input–output energy analysis in dry apricot production of Turkey. Energy Conversion and Management 48(2): 592-598.
Frorip J, Kokin E, Praks J, Poikalainen V, Ruus A, Veermäe I, Lepasalu L, Schäfer W, Mikkola H and Ahokas J, 2012. Energy consumption in animal production-case farm study. Agronomy research Biosystem engineering, Special 1: 39-48.
Hosseinzadeh-Bandbafha H, Safarzadeh D, Ahmadi E and Nabavi-Pelesaraei A, 2016. Optimization of energy consumption of dairy farms using data envelopment analysis–A case study: Qazvin city of Iran. Journal of the Saudi Society of Agricultural Sciences.
IDF A, 2010. Common carbon footprint approach for dairy. The IDF guide to standard lifecycle assessment methodology for the dairy sector. Bulletin of the International Dairy Foundation, Brussels, Belgium. 445.
Kitani O, 1999. CIGR Handbook of Agricultural Engineering, Volume V Energy and Biomass Engineering, Chapter 1 Natural Energy and Biomass, Part 1.3 Biomass Resources.
Kizilaslan H, 2009. Input–output energy analysis of cherries production in Tokat Province of Turkey. Applied Energy 86(7): 1354-1358.
Mandal K, Saha K, Ghosh P, Hati K and Bandyopadhyay K, 2002. Bioenergy and economic analysis of soybean-based crop production systems in central India. Biomass and Bioenergy 23(5): 337-345.
Mohammadi A, Rafiee S, Mohtasebi SS and Rafiee H, 2010. Energy inputs–yield relationship and cost analysis of kiwifruit production in Iran. Renewable energy 35(5): 1071-1075.
Ozkan B, Kurklu A and Akcaoz H, 2004. An input–output energy analysis in greenhouse vegetable production: a case study for Antalya region of Turkey. Biomass and Bioenergy 26(1): 89-95.
Sefeedpari P, 2012. Assessment and optimization of energy consumption in dairy farm: energy efficiency. Iranica Journal of Energy and Environment 3(3): 213-224.
Sefeedpari P, Rafiee S and Akram A, 2012. The functional relationship between non-renewable energy use and milk yield in Iran. Journal of Livestock Science (ISSN online 2277-6214) 3: 45-51.
Singh S and Mittal JP, 1992. Energy in production agriculture: Mittal Publications.
Soltanali H, Emadi B, Rouhani A and KHojastepour M, 2015. Energy consumption modeling and greenhouse gas emissions in dairy farms (case study: guilan province, Iran). Journal of Ruminant Research 4(2): 175-193. (In Persian).
Steinfeld H, Gerber P, Wassenaar T, Castel V and de Haan C, 2006. Livestock's long shadow: environmental issues and options, Roma, IT, FAO.
Uzal S, 2008. The effects of seasons on the area usage of animals and time budget in loose and free stall dairy cattle barns. Available:
http://agris.fao.org.
Uzal S, 2013. Comparison of the energy efficiency of dairy production farms using different housing systems. Environmental Progress and Sustainable Energy 32(4): 1202-1208.
Uzal S and Ugurlu N, 2010. The time budget of dairy cows as affected by season and housing system. Journal of International Environmental Application and Science 5(4): 638-647.
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