References
- Abdelqader, A., C. B. A. Wollny, and M. Gauly. 2007. Characterization of local chicken production systems and their potential under different levels of management practice in Jordan. Tropical Animal Health and Production 39 (3):155–64. doi:https://doi.org/10.1007/S11250-007-9000-X.
- Abín, R., A. Laca, A. Laca, and M. Díaz. 2018. Environmental assesment of intensive egg production: A Spanish case study. Journal of Cleaner Production 179:160–68. doi:https://doi.org/10.1016/J.JCLEPRO.2018.01.067.
- Abioja, M. O., O. P. Omotara, O. S. Iyasere, J. A. Abiona, L. T. Egbeyale, and O. F. Akinjute. 2020. Comparative study of adaptation in three chicken genotypes under humid tropical conditions of Nigeria. Journal of Animal Physiology and Animal Nutrition 104 (5):1401–09. doi:https://doi.org/10.1111/JPN.13381.
- Acosta-Martínez, V., and R. D. Harmel. 2006. Soil microbial communities and enzyme activities under various poultry litter application rates. Journal of Environmental Quality 35 (4):1309–18. doi:https://doi.org/10.2134/jeq2005.0470.
- Adeleye, E. O., L. S. Ayeni, and S. O. Ojeniyi. 2010. Effect of poultry manure on soil physico-chemical properties, leaf nutrient contents and yield of yam (Dioscorea rotundata) on Alfisol in southwestern Nigeria. Journal of American Science 6 (10):871–78. doi:https://doi.org/10.7537/marsjas061010.103.
- Admasu, S., D. Solomon, and M. Meseret. 2019. Poultry feed resources and chemical composition of crop content of scavenging indigenous chicken. Online Journal of Animal and Feed Research 9 (6):247–55. doi:https://doi.org/10.36380/scil.2019.ojafr34.
- Agbede, T., S. Ojeniyi, and A. Adeyemo. 2008. Effect of poultry manure on soil physical and chemical properties, growth and grain yield of sorghum in southwest, Nigeria. American-Eurasian Journal of Sustainable Agriculture 2 (1):72–77. http://www.aensiweb.net/AENSIWEB/aejsa/aejsa/2008/72-77.pdf.
- Aini, I. 1990. Indigenous chicken production in south-east Asia. World’s Poultry Science Journal 46 (1):51–57. doi:https://doi.org/10.1079/wps19900010.
- Alonso, M. E., J. R. González-Montaña, and J. M. Lomillos. 2020. Consumers’ concerns and perceptions of farm animal welfare. Animals 10(3):385. MDPI AG. doi:https://doi.org/10.3390/ani10030385.
- Anyaegbu, P. O. 2009. Evaluating the contribution of poultry manure application for sustainable crop yield in cassava (Manihot esculenta) based cropping systems. Report and Opinion 1 (6):77–86. doi:https://doi.org/10.7537/marsroj010609.11.
- Appleby, M., J. Mench, and B. Hughes. 2004. Poultry behaviour and welfare. Wallingford, UK: CABI Publishing.
- Basha, M. B., C. Mason, M. F. Shamsudin, H. I. Hussain, and M. A. Salem. 2015. Consumers attitude towards organic food. Procedia Economics and Finance 31:444–52. doi:https://doi.org/10.1016/S2212-5671(15)01219-8.
- Bell, D. D. 2002. Waste management. In Commercial chicken meat and egg production, ed. D.D., Bell and W.D., Weaver, 149–67. New York, NY, USA: Springer.
- Bell, L. W., and A. D. Moore. 2012. Integrated crop-livestock systems in Australian agriculture: trends, drivers and implications. Agricultural Systems 111:1–12. doi:https://doi.org/10.1016/j.agsy.2012.04.003.
- Bestman, M. (2017). Lessons learnt - agroforestry for organic and free-range egg production in the Netherlands. In AGFORWARD Report Work-package 5: Agroforestry for Livestock Farmers. www.agforward.eu
- Bettridge, J. M., A. Psifidi, Z. G. Terfa, T. T. Desta, M. Lozano-Jaramillo, T. Dessie, P. Kaiser, P. Wigley, O. Hanotte, and R. M. Christley. 2018. The role of local adaptation in sustainable village chicken production. Nature Sustainability 1: 574–582. doi:https://doi.org/10.1038/s41893-018-0150-9.
- Bijay-Singh, Y.-S., M. S. Maskina, O. P. Meelu, and O. P. Meelu. 1996. The value of poultry manure for wetland rice grown in rotation with wheat. Nutrient Cycling in Agroecosystems 47 (3):243–50. doi:https://doi.org/10.1007/bf01986279.
- Bilenky, M., and A. Nair. 2018. Integrating vegetable and poultry production for sustainable cropping systems. Farm Progress Reports 2017 (1):22–24. doi:https://doi.org/10.31274/farmprogressreports-180814-1946.
- Biratu, G. K., E. Elias, P. Ntawuruhunga, and N. Nhamo. 2018. Effect of chicken manure application on cassava biomass and root yields in two agro-ecologies of Zambia. Agriculture 8 (45):15. doi:https://doi.org/10.3390/agriculture8040045.
- Blair, R. 2018. Nutrition and feeding of organic poultry. A. Lainsbury, T. Jay, and A. Thompson, eds. 2nd Edition. Wallingford, UK: CABI Publishing.
- Boateng, S., J. Zickermann, and M. Kornahrens. 2009. Poultry manure effect on growth and yield of maize. West African Journal of Applied Ecology 9 (1):1–11. doi:https://doi.org/10.4314/wajae.v9i1.45682.
- Bolan, N. S., A. A. Szogi, T. Chuasavathi, B. Seshadri, M. J. Rothrock, and P. Panneerselvam. 2010. Uses and management of poultry litter. World’s Poultry Science Journal 66 (4):673–98. doi:https://doi.org/10.1017/S0043933910000656.
- Bonaudo, T., A. B. Bendahan, R. Sabatier, J. Ryschawy, S. Bellon, F. Leger, D. Magda, and M. Tichit. 2014. Agroecological principles for the redesign of integrated crop-livestock systems. European Journal of Agronomy 57:43–51. doi:https://doi.org/10.1016/j.eja.2013.09.010.
- Boosten, M., and J. Penninkhof (2018). Combining short rotation willow coppice with free range chickens - experiences from experiments on farm level in the Netherlands. In N. Ferreiro-Dominguez and M. Mosquera-Lousada (Eds.), Proceedings of the 4th European Agroforestry Conference - Agroforestry as Sustainable Land Use, Nijmegen, The Netherlands, (pp. 424–27). European Agroforestry Federation and the University of Santiago de Compostela.
- Bracke, M. B. M., and H. Hopster. 2006. Assessing the importance of natural behavior for animal welfare. Journal of Agricultural and Environmental Ethics 19 (1):77–89. doi:https://doi.org/10.1007/s10806-005-4493-7.
- Breitsameter, L., M. Gauly, and J. Isselstein. 2014. Sward botanical composition and sward quality affect the foraging behaviour of free-range laying hens. Applied Animal Behaviour Science 150:27–36. doi:https://doi.org/10.1016/j.applanim.2013.10.009.
- Bright, A., D. Brass, J. Clachan, K. A. Drake, and A. D. Joret. 2011. Canopy cover is correlated with reduced injurious feather pecking in commercial flocks of free-range laying hens. Animal Welfare 20:329–38. https://www.faifarms.com/wp-content/uploads/2016/03/Canopy-Cover-Correlates-with-Reduced-Injurious-Feather-Pecking.12-06-13Bright_et_al_2011.pdf
- Brown, M. T., and R. A. Herendeen. 1996. Embodied energy analysis and EMERGY analysis: A comparative view. Ecological Economics 19 (3):219–35. doi:https://doi.org/10.1016/S0921-8009(96)00046-8.
- Buchanan, N. P., J. M. Hott, L. B. Kimbler, and J. S. Moritz. 2007. Nutrient composition and digestibility of organic broiler diets and pasture forages. Journal of Applied Poultry Research 16 (1):13–21. doi:https://doi.org/10.1093/japr/16.1.13.
- Butler, C. D., and W. Oluoch-Kosura. 2006. Linking future ecosystem services and future human well-being. Ecology and Society 11 (1):16. http://www.jstor.org/stable/26267788.
- Buxton, D. R., and D. D. Redearn. 1997. Plant limitations to fiber digestion and utilization. The Journal of Nutrition 127 (5):814–18. doi:https://doi.org/10.1093/jn/127.5.814S.
- CAC. (2013). Guidelines for the production, processing, labelling and marketing of organically produced foods. http://www.fao.org/fao-who-codexalimentarius/codex-texts/guidelines/en/
- Campbell, D. L. M., G. N. Hinch, J. A. Downing, and C. Lee. 2017. Outdoor stocking density in free-range laying hens: Effects on behaviour and welfare. Animal 11 (6):1036–45. doi:https://doi.org/10.1017/S1751731116002342.
- Campbell, D. L. M., G. N. Hinch, J. A. Downing, and C. Lee. 2018. Early enrichment in free-range laying hens: effects on ranging behaviour, welfare and response to stressors. Animal 12 (3):575–84. doi:https://doi.org/10.1017/S1751731117001859.
- Castellini, C., S. Bastianoni, C. Granai, A. D. Bosco, and M. Brunetti. 2006. Sustainability of poultry production using the emergy approach: comparison of conventional and organic rearing systems. Agriculture, Ecosystems & Environment 114 (2–4):343–50. doi:https://doi.org/10.1016/J.AGEE.2005.11.014.
- Castellini, C., A. Boggia, C. Cortina, A. Dal Bosco, L. Paolotti, E. Novelli, and C. Mugnai. 2012. A multicriteria approach for measuring the sustainability of different poultry production systems. Journal of Cleaner Production 37:192–201. doi:https://doi.org/10.1016/j.jclepro.2012.07.006.
- Clark, E. A. 2004. Benefits of re-integrating livestock and forages in crop production systems. Journal of Crop Improvement 12(1–2):405–36. Taylor & Francis Group . doi:https://doi.org/10.1300/J411v12n01_06.
- Clark, M. S., and S. H. Gage. 1996. Effects of free-range chickens and geese on insect pests and weeds in an agroecosystem. American Journal of Alternative Agriculture 11 (1):39–47. doi:https://doi.org/10.1017/s0889189300006718.
- Clark, M. S., S. H. Gage, L. B. DeLind, and M. Lennington. 1995. The compatibility of domestic birds with a nonchemical agroecosystem. American Journal of Alternative Agriculture 10 (3):114–21. doi:https://doi.org/10.1017/S0889189300006275.
- Cosentino, C. 2020. First results on the evaluation of the ground-cover biodiversity in an agroforestry poultry system. Acta Fytotechnica et Zootechnica 23 ( Monothematic Issue):15–22. doi:https://doi.org/10.15414/afz.2020.23.mi-fpap.15-22.
- Czyżewski, A., and K. Smędzik-Ambroży. 2015. Specialization and diversification of agricultural production in the light of sustainable development. Journal of International Studies 8 (2):63–73. doi:https://doi.org/10.14254/2071-8330.2015/8-2/6.
- Dal Bosco, A., C. Mugnai, S. Mattioli, A. Rosati, S. Ruggeri, D. Ranucci, and C. Castellini. 2016. Transfer of bioactive compounds from pasture to meat in organic free-range chickens. Poultry Science 95 (10):2464–71. doi:https://doi.org/10.3382/PS/PEV383.
- Darnhofer, I., T. Lindenthal, R. Bartel-Kratochvil, and W. Zollitsch. 2010. Conventionalisation of organic farming practices: From structural criteria towards an assessment based on organic principles. A review. Agronomy for Sustainable Development 30(1):67–81. 2009. doi:https://doi.org/10.1051/AGRO/2009011.
- Dauda, S. N., F. A. Ajayi, and E. Ndor. 2009. Growth and yield of water melon (Citrullus lanatus) as affected by poultry manure application. Electronic Journal of Environmental, Agricultural and Food Chemistry 8 (4):305–11.
- Davis, K. F., J. A. Gephart, K. A. Emery, A. M. Leach, J. N. Galloway, and P. D’Odorico. 2016. Meeting future food demand with current agricultural resources. Global Environmental Change 39:125–32. doi:https://doi.org/10.1016/J.GLOENVCHA.2016.05.004.
- de Koning, C., S. M. Kitessa, R. Barekatain, and K. Drake. 2018. Determination of range enrichment for improved hen welfare on commercial fixed-range free-range layer farms. Animal Production Science 59 (7):1336–48. doi:https://doi.org/10.1071/AN17757.
- Dedeke, G. A., S. O. Owa, and K. B. Olurin. 2010. Amino acid profile of four earthworms species from Nigeria. Agriculture and Biology Journal of North America 1 (1):97–102. http://eprints.covenantuniversity.edu.ng/7781/#.YBLZTOj7TIU.
- Diaz-Sanchez, S., D. D’Souza, D. Biswas, and I. Hanning. 2015. Botanical alternatives to antibiotics for use in organic poultry production. Poultry Science 94 (6):1419–30. doi:https://doi.org/10.3382/ps/pev014.
- Dikinya, O., and N. Mufwanzala. 2010. Chicken manure-enhanced soil fertility and productivity: effects of application rates. Journal of Soil Science and Environmental Management 1 (3):46–54. http://www.academicjournals.org/JSSEM.
- Dikmen, B., A. Ipek, U. Şahan, M. Petek, and A. Sözcü. 2016. The egg production and welfare of laying hens kept in different housing systems (conventional, enriched cage, and free range). Poultry Science 95 (7):1564–72. doi:https://doi.org/10.3382/ps/pew082.
- Dinis, I., L. Ortolani, R. Bocci, and C. Brites. 2015. Organic agriculture values and practices in Portugal and Italy. Agricultural Systems 136:39–45. doi:https://doi.org/10.1016/j.agsy.2015.01.007.
- Dolberg, F. 2007. Poultry production for livelihood improvement and poverty alleviation. FAO Publication: Poultry in the 21st Century 2005:1–26. https://www.fao.org/Ag/againfo/home/events/bangkok2007/docs/part3/3_1.pdf.
- Entz, M. H., and J. R. T. Martens. 2009. Organic crop-livestock systems. In Organic farming: the ecological system, ed. C. Francis, 69–84. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America (joint publication). doi:https://doi.org/10.2134/agronmonogr54.c4.
- ISO. 2006. Vol. 14040. 2006. Environmental management — life cycle assessment — principles and framework. International Standard Organization.
- ISO. 2006. Vol. 14044. 2006. Environmental management — life cycle assessment — requirements and guidelines. International Standard Organization.
- Erenstein, O., and W. Thorpe. 2010. Crop-livestock interactions along agro-ecological gradients: A meso-level analysis in the indo-gangetic plains, India. Environment, Development and Sustainability 12 (5):669–89. doi:https://doi.org/10.1007/s10668-009-9218-z.
- Ewulo, B., S. Ojeniyi, and D. Akanni. 2008. Effect of poultry manure on selected soil physical and chemical properties, growth, yield and nutrient status of tomato. African Journal of Agricultural Research 3 (9):612–616.
- Fagerholm, N., M. Torralba, P. J. Burgess, and T. Plieninger. 2016. A systematic map of ecosystem services assessments around European agroforestry. Ecological Indicators 62:47–65. doi:https://doi.org/10.1016/j.ecolind.2015.11.016.
- Fürmetz, A., C. Keppler, U. Knierim, F. Deerberg, and J. Heß. 2005. Laying hens in a mobile housing system - free-range management and the resulting amounts of nitrogen in the range. In Ende der Nische - Beitrage zur 8. Wissenschaftstagung bkologischer Landbau, ed. J. Heß and G. Rahmann, 299–302.
- Garrity, D. 2012. Agroforestry and the Future of Global Land Use. In Agroforestry - the future of global land use, ed. R. Nair and D. Garrity, Vol. 9, 21–27. Dordrecht, The Netherlands: Springer. doi:https://doi.org/10.1007/978-94-007-4676-3.
- Giersberg, M. F., B. Spindler, and N. Kemper. 2017. Proceedings of the XVIII International Congress of the International Society for Animal Hygiene, Sinaloa, Mexico, (pp. 102–05). https://www.isah-soc.org/userfiles/downloads/proceedings/2017_Proceedings.pdf
- Glatz, P. C., Y. J. Ru, Z. H. Miao, S. K. Wyatt, and B. J. Rodda. 2005. Integrating poultry into a crop and pasture farming system. International Journal of Poultry Science 4 (4):187–91. doi:https://doi.org/10.3923/ijps.2005.187.191.
- Hammershøj, M., and N. F. Johansen. 2016. Review: The effect of grass and herbs in organic egg production on egg fatty acid composition, egg yolk colour and sensory properties. Livestock Science 194:37–43. doi:https://doi.org/10.1016/j.livsci.2016.11.001.
- Hassan, M. K., M. A. Afify, and M. M. Aly. 2004. Genetic resistance of Egyptian chickens to infectious bursal disease and Newcastle disease. Tropical Animal Health and Production 36 (1):1–9. doi:https://doi.org/10.1023/B:TROP.0000009524.47913.d4.
- Helmers, G. A., M. R. Langemeier, and S. Shaik (2005). Measuring scope and scale efficiency gains due to specialization. Proceedings of the Agricultural & Applied Economics Association (AAEA) Annual Meeting, Providence, RI, USA, (pp. 1–18).
- Henuk, Y. L., and J. G. Dingle. 2002. Practical and economic advantages of choice feeding systems for laying poultry. World’s Poultry Science Journal 58 (2):199–208. doi:https://doi.org/10.1079/wps20020018.
- Henuk, Y., and J. Dingle. 2003. Poultry manure: Source of fertilizer, fuel and feed. World’s Poultry Science Journal 59 (3):350–60. doi:https://doi.org/10.1079/wps20030022.
- Hetland, H., M. Choct, and B. Svihus. 2004. Role of insoluble non-starch polysaccharides in poultry nutrition. World’s Poultry Science Journal 60 (4):415–22. doi:https://doi.org/10.1079/wps200325.
- Hilimire, K. 2011. Integrated crop/livestock agriculture in the United States: A review. Journal of Sustainable Agriculture 35 (4):376–93. doi:https://doi.org/10.1080/10440046.2011.562042.
- Hilimire, K., S. R. Gliessman, and J. Muramoto. 2012. Soil fertility and crop growth under poultry/crop integration. Renewable Agriculture and Food Systems 28 (2):173–82. doi:https://doi.org/10.1017/S174217051200021X.
- Hoffmann, I. 2005. Research and investment in poultry genetic resources – Challenges and options for sustainable use. World’s Poultry Science Journal 61 (1):57–70. doi:https://doi.org/10.1079/WPS200449.
- Hoover, N. L., J. Y. Law, L. A. M. Long, R. S. Kanwar, and M. L. Soupir. 2019. Long-term impact of poultry manure on crop yield, soil and water quality, and crop revenue. Journal of Environmental Management 252:20. doi:https://doi.org/10.1016/j.jenvman.2019.109582.
- Horsted, K. (2006). Increased foraging in organic layers - PhD Thesis. http://orgprints.org/10463
- Horsted, K., J. E. Hermansen, and H. Ranvig. 2007. Crop content in nutrient-restricted versus non-restricted organic laying hens with access to different forage vegetations. British Poultry Science 48 (2):177–84. doi:https://doi.org/10.1080/00071660701227501.
- Hue, N. V. 1992. Correcting soil acidity of a highly weathered ultisol with chicken manure and sewage sludge. Communications in Soil Science and Plant Analysis 23 (3–4):241–64. doi:https://doi.org/10.1080/00103629209368586.
- Hunter, M. C., R. G. Smith, M. E. Schipanski, L. W. Atwood, and D. A. Mortensen. 2017. Agriculture in 2050: Recalibrating Targets for Sustainable Intensification. BioScience 67 (4):386–91. doi:https://doi.org/10.1093/BIOSCI/BIX010.
- IFOAM. (2014). The IFOAM Norms for Organic Production and Processing. https://www.ifoam.bio/our-work/how/standards-certification/organic-guarantee-system/ifoam-norms
- Iyappan, P., S. Karthikeyan, and S. Sekar. 2011. Changes in the composition of poultry farm excreta (PFE) by the cumulative influence of the age of birds, feed and climatic conditions and a simple mean for minimizing the environmental hazard. Changes in the Composition of Poultry Farm Excreta (PFE) by the Cumulative Influence of the Age of Birds, Feed and Climatic Conditions and a Simple Mean for Minimizing the Environmental Hazard 1 (5):847–59. doi:https://doi.org/10.6088/ijessi.00105020014.
- Jose, S. 2009. Agroforestry for ecosystem services and environmental benefits: An overview. Agroforestry Systems 76 (1):1–10. doi:https://doi.org/10.1007/s10457-009-9229-7.
- Karsten, H. D., P. H. Patterson, R. Stout, and G. Crews. 2010. Vitamins A, E and fatty acid composition of the eggs of caged hens and pastured hens. Renewable Agriculture and Food Systems 25 (1):45–54. doi:https://doi.org/10.1017/S1742170509990214.
- Khan, S. H. 2018. Recent advances in role of insects as alternative protein source in poultry nutrition. Journal of Applied Animal Research 46 (1):1144–57. doi:https://doi.org/10.1080/09712119.2018.1474743.
- Khan, S., S. Naz, A. Sultan, I. A. Alhidary, M. M. Abdelrahman, R. U. Khan, N. A. Khan, M. A. Khan, and S. Ahmad. 2016. Worm meal: A potential source of alternative protein in poultry feed. World’s Poultry Science Journal 72 (1):93–102. doi:https://doi.org/10.1017/S0043933915002627.
- Knierim, U. 2006. Animal welfare aspects of outdoor runs for laying hens: A review. NJAS - Wageningen Journal of Life Sciences 54 (2):133–45. doi:https://doi.org/10.1016/S1573-5214(06)80017-5.
- Kobierski, M., A. Bartkowiak, J. Lemanowicz, and M. Piekarczyk. 2017. Impact of poultry manure fertilization on chemical and biochemical properties of soils. Plant, Soil and Environment 63 (12):558–63. doi:https://doi.org/10.17221/668/2017-PSE.
- Kratz, S., J. Rogasik, and E. Schnug. 2004. Changes in soil nitrogen and phosphorus under different broiler production systems. Journal of Environmental Quality 33 (5):1662–74. doi:https://doi.org/10.2134/jeq2004.1662.
- Larsen, H., G. Cronin, C. L. Smith, P. Hemsworth, and J. L. Rault. 2017. Behaviour of free-range laying hens in distinct outdoor environments. Animal Welfare 26 (3):255–64. doi:https://doi.org/10.7120/09627286.26.3.255.
- Laudadio, V., E. Ceci, N. M. B. Lastella, M. Introna, and V. Tufarelli. 2014. Low-fiber alfalfa (Medicago sativa L.) meal in the laying hen diet: effects on productive traits and egg quality. Poultry Science 93 (7):1868–74. doi:https://doi.org/10.3382/ps.2013-03831.
- Lay, D. C., R. M. Fulton, P. Y. Hester, D. M. Karcher, J. B. Kjaer, J. A. Mench, B. A. Mullens, R. C. Newberry, C. J. Nicol, N. P. O’Sullivan, et al. 2011. Hen welfare in different housing systems. Poultry Science 90 (1):278–94. doi:https://doi.org/10.3382/ps.2010-00962.
- Lee, A. 1994. Chicken tractor: the gardener’s guide to happy hens and healthy soil. 1st Edition. Shelburne, VT, USA: Good Earth Publications.
- Leinonen, I., and I. Kyriazakis. 2016. How can we improve the environmental sustainability of poultry production? Proceedings of the Nutrition Society 75 (3):265–73. doi:https://doi.org/10.1017/S0029665116000094.
- Lopez-Bote, C. J., R. Sanz Arias, A. I. Rey, A. Castaño, B. Isabel, and J. Thos. 1998. Effect of free-range feeding on n-3 fatty acid and α-tocopherol content and oxidative stability of eggs. Animal Feed Science and Technology 72 (1–2):33–40. doi:https://doi.org/10.1016/S0377-8401(97)00180-6.
- Lorenz, C., T. Kany, and M. A. Grashorn. 2013. Method to estimate feed intake from pasture in broilers and laying hens. Archiv Fur Geflugelkunde 77 (3):160–65.
- Martin, G., M. Moraine, J. Ryschawy, M. A. Magne, M. Asai, J. P. Sarthou, M. Duru, and O. Therond. 2016. Crop–livestock integration beyond the farm level: A review. Agronomy for Sustainable Development 36 (53):1–21. doi:https://doi.org/10.1007/s13593-016-0390-x.
- Massaccesi, L., A. C. Mancinelli, S. Mattioli, M. De Feudis, C. Castellini, A. Dal Bosco, M. L. Marongiu, and A. Agnelli. 2019. Geese reared in vineyard: soil, grass and animals interaction. Animals 9 (4):179. doi:https://doi.org/10.3390/ANI9040179.
- Materechera, S. A., and T. S. Mkhabela. 2002. The effectiveness of lime, chicken manure and leaf litter ash in ameliorating acidity in a soil previously under black wattle (Acacia mearnsii) plantation. Bioresource Technology 85 (1):9–16. doi:https://doi.org/10.1016/S0960-8524(02)00065-2.
- Mayton, E. X., E. V. Smith, and D. King. 1945. Nutgrass eradication studies: IV. use of chickens and geese in the control of nutgrass, cyperus rotundus L. Journal of the American Society of Agronomy 37 (10):785–91. doi:https://doi.org/10.2134/agronj1945.00021962003700100001x.
- McGrath, S., R. O. Maguire, B. F. Tracy, and J. H. Fike. 2010. Improving soil nutrition with poultry litter application in low-input forage systems. Agronomy Journal 102 (1):48–54. doi:https://doi.org/10.2134/agronj2009.0198.
- Miao, Z. H., P. C. Glatz, Y. J. Ru, S. K. Wyatt, and B. J. Rodda. 2005. Integrating free-range hens into a wheat stubble. International Journal of Poultry Science 4 (8):526–30. doi:https://doi.org/10.3923/ijps.2005.670.675.
- Michler, J. D., and A. L. Josephson. 2017. To specialize or diversify: agricultural diversity and poverty dynamics in Ethiopia. World Development 89:214–26. doi:https://doi.org/10.1016/j.worlddev.2016.08.011.
- Milestad, R., and I. Darnhofer. 2003. building farm resilience : the prospects and challenges of organic farming building farm resilience : the prospects and challenges of organic farming. Journal of Sustainable Agriculture 22 (3):81–97. doi:https://doi.org/10.1300/J064v22n03_09.
- Minga, U. M., P. L. Msoffe, and P. S. Gwakisa (2004). Biodiversity (variation) in disease resistance in pathogens within rural chicken populations. Proceedings of the International Health Network for Family Poultry (INFD). World Poultry Congress, Istanbul, Turkey. https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.584.1082&rep=rep1&type=pdf.
- Mohammed, K. A. F., L. Sarmiento-Franco, R. Santos-Ricalde, and J. F. Solorio-Sanchez. 2012. Egg production, egg quality and crop content of rhode island red hens grazing on natural tropical vegetation. Tropical Animal Health and Production 45 (1):367–72. doi:https://doi.org/10.1007/s11250-012-0225-y.
- Mollison, B. 1988. Permaculture: A Designers’ Manual. 1st Edition. New South Wales, Australia: Tagari Publications.
- Momoh, O., J. Egahi, P. Ogwuche, and V. Etim. 2010. Variation in nutrient composition of crop contents of scavenging local chickens in north central Nigeria. Agriculture and Biology Journal of North America 1 (5):912–15. doi:https://doi.org/10.5251/abjna.2010.1.5.912.915.
- Moraine, M., M. Duru, P. Nicholas, P. Leterme, and O. Therond. 2014. Farming system design for innovative crop-livestock integration in Europe. Animal 8 (8):1204–17. doi:https://doi.org/10.1017/S1751731114001189.
- Moraine, M., M. Duru, and O. Therond. 2017. A social-ecological framework for analyzing and designing integrated crop-livestock systems from farm to territory levels. Renewable Agriculture and Food Systems 32 (1):43–56. doi:https://doi.org/10.1017/S1742170515000526.
- Morgera, E., C. B. Caro, and G. M. Durán. 2012. Organic agriculture and the law. Rome, Italy: Food and Agriculture Organization of the United Nations. https://www.cbd.int/financial/greenmarkets/several-law-fao.pdf.
- Moritz, J. S., A. S. Parsons, N. P. Buchanan, N. J. Baker, J. Jaczynski, O. J. Gekara, and W. B. Bryan. 2005. Synthetic methionine and feed restriction effects on performance and meat quality of organically reared broiler chickens. Journal of Applied Poultry Research 14 (3):521–35. doi:https://doi.org/10.1093/japr/14.3.521.
- Mottet, A., and G. Tempio. 2017. Global poultry production: Current state and future outlook and challenges. World’s Poultry Science Journal 73 (2):245–56. doi:https://doi.org/10.1017/S0043933917000071.
- Mourad, R., H. H. Jaafar, and N. Daghir. 2019. New estimates of water footprint for animal products in fifteen countries of the middle east and north africa (2010-2016). Water resources and industry, Vol. 22., 100113. Elsevier B.V. doi:https://doi.org/10.1016/j.wri.2019.100113.
- Mpenda, F. N., M. A. Schilling, Z. Campbell, E. B. Mngumi, and J. Buza. 2019. The genetic diversity of local African chickens: A potential for selection of chickens resistant to viral infections. Journal of Applied Poultry Research 28 (1):1–12. doi:https://doi.org/10.3382/japr/pfy063.
- Murugesan, S., R. Ullengala, and V. Amirthalingam. 2017. Heat shock protein and thermal stress in chicken. In Heat shock proteins in veterinary medicine and sciences. heat shock proteins, ed. A. Asea and P. Kaur, 179–93. Cham: Springer. doi:https://doi.org/10.1007/978-3-319-73377-7_6.
- Nair, P. K. R., B. M. Kumar, and V. D. Nair. 2009. Agroforestry as a strategy for carbon sequestration. Journal of Plant Nutrition and Soil Science 172 (1):10–23. doi:https://doi.org/10.1002/jpln.200800030.
- Nalubwama, S., M. Vaarst, F. Kabi, M. Kiggundu, F. Bagamba, C. Odhong, A. Mugisha, and N. Halberg. 2014. Challenges and prospects of integrating livestock into smallholder organic pineapple production in Uganda. Livestock Research for Rural Development 26 (6). http://www.lrrd.org/lrrd26/6/nalu26113.htm.
- Ncobela, C. N., and M. Chimonyo. 2015a. Farmer perceptions on the use of non-conventional animal protein sources for scavenging chickens in semi-arid environments. African Journal of Agricultural Research 10 (32):3107–15. doi:https://doi.org/10.5897/AJAR2015.9877.
- Ncobela, C. N., and M. Chimonyo. 2015b. Potential of using non-conventional animal protein sources for sustainable intensification of scavenging village chickens: A review. Animal feed science and technology, Vol. 208., 1–11. Elsevier. doi:https://doi.org/10.1016/j.anifeedsci.2015.07.005.
- Ndukwe, O., I. Ekesiobi, N. Uzondu, and E. Nnabuife. 2014. Growth and yield responses of maize (zea mays) to poultry manure and NPK 15-15-15 fertilizer in igbariam, Anambra state, southeastern Nigeria. International Journal of Agriculture and Biosciences 3 (6):261–65. http://www.ijagbio.com/pdf-files/volume-3-no-6-2014/261-265.pdf.
- Nicholson, F. A., B. J. Chambers, and K. A. Smith. 1996. Nutrient composition of poultry manures in England and wales. Bioresource Technology 58 (3):279–84. doi:https://doi.org/10.1016/S0960-8524(97)86087-7.
- Nodar, R., M. J. Acea, and T. Carballas. 1990. Microbial composition of poultry excreta. Biological Wastes 33 (2):95–105. doi:https://doi.org/10.1016/0269-7483(90)90150-Q.
- Odum, H. 1995. Environmental accounting : EMERGY and environmental decision making. 1st Edition. New York, NY, USA: Wiley.
- OECD/FAO. 2020. OECD-FAO agricultural outlook 2020-2029. OCDE/FAO. doi:https://doi.org/10.1787/1112c23b-en.
- Padel, S., H. Röcklinsberg, and O. Schmid. 2009. The implementation of organic principles and values in the European regulation for organic food. Food Policy 34 (3):245–51. doi:https://doi.org/10.1016/J.FOODPOL.2009.03.008.
- Padhi, M. K. 2016. Importance of indigenous breeds of chicken for rural economy and their improvements for higher production performance. Scientifica 2016:1–9. doi:https://doi.org/10.1155/2016/2604685.
- Paolotti, L., A. Boggia, C. Castellini, L. Rocchi, and A. Rosati. 2016. Combining livestock and tree crops to improve sustainability in agriculture: A case study using the Life Cycle Assessment (LCA) approach. Journal of Cleaner Production 131:351–63. doi:https://doi.org/10.1016/j.jclepro.2016.05.024.
- Patterson, P. H., and E. S. Lorenz. 1996. Manure nutrient production from commercial white leghorn hens. Journal of Applied Poultry Research 5 (3):260–68. doi:https://doi.org/10.1093/japr/5.3.260.
- Pedersen, H. L., A. Olsen, K. Horsted, M. Korsgaard, and B. Pedersen (2002). Combined production of broilers and fruits. Proceedings of NJF-Seminar No. 346 - Organic Production of Fruit and Berries, Årslev, Denmark.
- Popova, T., E. Petkov, and M. Ignatova. 2018. Fatty acid composition of breast meat in two lines of slow-growing chickens reared conventionally or on pasture. Food Science and Applied Biotechnology 1 (1):70–76. doi:https://doi.org/10.30721/FSAB2018.V1.I1.7.
- Ravindran, V., and R. Blair. 1993. Feed resources for poultry production in Asia and the Pacific. III. Animal protein sources. World’s Poultry Science Journal 49 (3):219–35. doi:https://doi.org/10.1079/wps19930020.
- Reta, D. 2009. Understanding the role of indigenous chickens during the long walk to food security in Ethiopia. Livestock Research for Rural Development 21 (8). http://www.lrrd.org/lrrd21/8/dugu21116.htm.
- Rocchi, L., L. Paolotti, A. Rosati, A. Boggia, and C. Castellini. 2019. Assessing the sustainability of different poultry production systems: A multicriteria approach. Journal of Cleaner Production 211:103–14. doi:https://doi.org/10.1016/j.jclepro.2018.11.013.
- Rodenburg, T. B., M. M. Van Krimpen, I. C. De Jong, E. N. De Haas, M. S. Kops, B. J. Riedstra, R. E. Nordquist, J. P. Wagenaar, M. Bestman, and C. J. Nicol. 2013. The prevention and control of feather pecking in laying hens: identifying the underlying principles. World’s Poultry Science Journal 69(2):361–74. Taylor & Francis. doi:https://doi.org/10.1017/S0043933913000354.
- Salatin, J. 1993. Pastured poultry profit$. 1st Edition. Swoope, VA, USA: Polyface, Incorporated.
- Schou, T. W., R. Labouriau, A. Permin, J. P. Christensen, P. Sørensen, H. P. Cu, V. K. Nguyen, and H. R. Juul-Madsen. 2010. MHC haplotype and susceptibility to experimental infections (salmonella enteritidis, pasteurella multocida or ascaridia galli) in a commercial and an indigenous chicken breed. Veterinary Immunology and Immunopathology 135 (1–2):52–63. doi:https://doi.org/10.1016/j.vetimm.2009.10.030.
- Scott, S. 2013. Old orchard organic farm in Zambia. In Organic agriculture: African experiences in resilience and sustainability, ed. R. Auerbach, G. Rundgren, and N. Scialabba, 148–58. Rome, Italy: Food and Agriculture Organization of the United Nations. https://www.fao.org/3/i3294e/i3294e.pdf
- Seidavi, A. R., H. Zaker-Esteghamati, and C. G. Scanes. 2019. Present and potential impacts of waste from poultry production on the environment. World’s Poultry Science Journal 75 (1):29–42. doi:https://doi.org/10.1017/S0043933918000922.
- Sherwin, C. M., G. J. Richards, and C. J. Nicol. 2010. Comparison of the welfare of layer hens in 4 housing systems in the UK. British Poultry Science 51 (4):488–99. doi:https://doi.org/10.1080/00071668.2010.502518.
- Skřivan, M., S. H. Pickinpaugh, V. Pavlů, E. Skřivanová, and M. Englmaierová. 2015. A mobile system for rearing meat chickens on pasture. Czech Journal of Animal Science 60 (2):52–59. doi:https://doi.org/10.17221/7974-CJAS.
- Son, J. H. 2009. The study on treatment of poultry waste by earthworms, and the effect of feeding earthworms meal on the performance of broilers and laying hens, and safety of meat and egg. Korean Journal of Organic Agriculture 17 (1):63–82. https://agris.fao.org/agris-search/search.do?recordID=KR2009004066.
- Spangenberg, G., S. Hein, and J. Schneider (2014). Combining hens for egg production and trees for wood chips in an agroforestry system. In J. Palma, A. Chalmin, P. Burgess, J. Smith, M. Strachan, J. Mirazo, and A. Rosati (Eds.), Proceedings of the 2nd European Agroforestry Conference - Integrating Science and Policy to Promote Agroforestry in Practice, Cottbus, Germany, (pp. 71–73). https://doi.org/10.13140/2.1.4505.3442
- Stadig, L. M., F. A. M. Tuyttens, T. B. Rodenburg, B. Vandecasteele, B. Ampe, and B. Reubens. 2019. Interactions between broiler chickens, soil parameters and short rotation coppice willow in a free-range system. Agroecology and Sustainable Food Systems 43 (9):1009–30. doi:https://doi.org/10.1080/21683565.2018.1557777.
- Tadelle, D., Y. Alemu, and K. J. Peters. 2000. Indigenous chickens in Ethiopia: genetic potential and attempts at improvement. World’s Poultry Science Journal 56 (1):52–54. doi:https://doi.org/10.1079/wps20000005.
- Taylor, R. C., H. Omed, and G. Edwards-Jones. 2014. The greenhouse emissions footprint of free-range eggs. Poultry Science 93 (1):231–37. doi:https://doi.org/10.3382/PS.2013-03489.
- Timmermans, B., and M. Bestman (2016). Quality of apple trees and apples in poultry free range areas. 3rd European Agroforestry Conference, Montpellier, France, (pp. 420–23).
- Tufarelli, V., M. Ragni, and V. Laudadio. 2018. Feeding forage in poultry: A promising alternative for the future of production systems. Agriculture 8 (6):1–10. doi:https://doi.org/10.3390/agriculture8060081.
- United Nations. (2019). 2019 Revision of World Population Prospects. https://population.un.org/wpp/
- Vaarst, M., S. Steenfeldt, and K. Horsted. 2015. Sustainable development perspectives of poultry production. World’s Poultry Science Journal 71(4):609–20. Cambridge University Press. doi:https://doi.org/10.1017/S0043933915002433.
- Van Asselt, M., E. D. Ekkel, B. Kemp, and E. N. Stassen. 2015. Best broiler husbandry system and perceived importance of production aspects by Dutch citizens, poultry farmers and veterinarians. In Know your food, ed. D. E. Dumitras, I. M. Jitea, and S. Aerts, 138–43. Wageningen, The Netherlands: Wageningen Academic Publishers. doi:https://doi.org/10.3920/978-90-8686-813-1.
- Van, D. N., N. Moula, E. Moyse, L. D. Duc, T. V. Dinh, and F. Farnir. 2020. Productive performance and egg and meat quality of two indigenous poultry breeds in Vietnam, ho and dong tao, fed on commercial feed. Animals 10 (3):408. doi:https://doi.org/10.3390/ANI10030408.
- Walker, A., and S. Gordon. 2003. Intake of nutrients from pasture by poultry. Proceedings of the Nutrition Society 62 (2):253–56. doi:https://doi.org/10.1079/pns2002198.
- Wang, Q., H. Xiao, Q. Ma, X. Yuan, J. Zuo, J. Zhang, S. Wang, and M. Wang. 2020. Review of emergy analysis and life cycle assessment: coupling development perspective. Sustainability 12 (1):367. doi:https://doi.org/10.3390/SU12010367.
- Weatherell, C., A. Tregear, and J. Allinson. 2003. In search of the concerned consumer: UK public perceptions of food, farming and buying local. Journal of Rural Studies 19 (2):233–44. doi:https://doi.org/10.1016/S0743-0167(02)00083-9.
- Westaway, S., C. Kling, and J. Smith. 2017. A comparison of the performance of three sward mixtures sown under trees in a silvopoultry system in the UK. Agroforestry Systems 92 (4):1009–18. doi:https://doi.org/10.1007/S10457-017-0142-1.
- Wiedemann, S., C. Pratt, N. Bliefield, D. G. Mayer, M. R. Redding, and E. McGahan. 2018. Establishing soil nutrient distribution zones across free range egg farms to guide practical nutrient management strategies. Agriculture, Ecosystems & Environment 257:20–29. doi:https://doi.org/10.1016/J.AGEE.2018.01.021.
- Willer, H., B. Schlatter, J. Trávnicek, L. Kemper, and J. Lernoud. 2020. The world of organic agriculture. statistics and emerging trends 2020. H. Willer, B. Schlatter, J. Trávnicek, L. Kemper, and J. Lernoud, eds. 1st Edition. Frick, Switzerland: Research Institute of Organic Agriculture (FiBL), IFOAM - Organics International.
- Yıldız, A. Ö., E. T. Şentürk, and O. Olgun. 2020. Use of alfalfa meal in layer diets – A review. World’s Poultry Science Journal 76 (1):134–43. doi:https://doi.org/10.1080/00439339.2020.1708839.
- Yu, C., X. Jiang, H. Du, Q. Li, Z. Zhang, M. Qiu, T. Chen, B. Xia, X. Song, C. Hu, et al. 2020. Effects of free-range broiler production on vegetation characteristic and soil physicochemical property of the stocking areas in China. Agroforestry Systems 94 (3):675–85. doi:https://doi.org/10.1007/s10457-019-00438-9.
- Zeltner, E., and V. Maurer. 2009. Poultry Welfare Symposium, Cervia, Italy. https://www.cabi.org/Uploads/animal-science/worlds-poultry-science-association/WPSA-italy-2009/79_welfare2009_zeltner.pdf.