Abstract
Alternative poultry production with special reference to free range broilers has increased significantly since the nineties in many regions of the world. Numerous factors influence the productive performance of this type of broilers: genotype (namely the use of naked neck animals), feeding and access to an outdoor area. The aim of this paper is to study the influence of each of these factors on the productive performance of free range broilers under commercial rearing conditions. A total of 3200, day old chicks of both sexes from naked neck and normally feathered genotypes were used in this trial. After a joint initiation phase, animals were divided into four different treatments with the combination of two concentrates (high vs low energy content) and management (access to outside park or not). Experiment lasted a total of 12 weeks. Live weight date was recorded weekly and a samples of animals from the trial were sacrificed at the age of 8, 10 and 12 weeks, when carcass characteristics were determined. Besides sex, the only factor that seems to affect growth characteristics was genotype as naked neck animals had poorer growth rates than normally feathered. No effect was detected on carcass yields and percentages of carcass components for any of the variables. From the data presented in this trial the practises associated with free range production are of relative inconsequence to the technical animal production parameters and can only be justified by a pressing need to differentiate these products from standard poultry products in what concerns both welfare issues and meat characteristics. The results also indicate that genetic material from alternative poultry production in Europe can be a useful option in poultry production development projects in the tropics.
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Aboe, P.A., Boa-Amponsem, K., Okantah, S.A., Butler, E.A., Dorward, P.T. and Bryant, M.J., 2006. Free-range village chickens on the Accra plains, Ghana: their husbandry and productivity. Tropical Animal Health and Production 38, 235–248.
Almeida, A.M. and Cardoso, L.A., 2001. African poultry—limitations and development perspectives. Revista Portuguesa de Ciências Veterinárias 96, 114–123. (in Portuguese).
Almeida, A.M. and Cardoso L.A., 2008a. Animal production and genetic resources in Guinea Bissau: I-Northern Cacheu province. Tropical Animal Health Production 40, 529–536.
Almeida, A.M. and Cardoso, L.A., 2008b. Animal production and genetic resources in Guinea Bissau: II-Tombali province. Tropical Animal Health Production 40, 537–543.
Baelmans, R., Parmentier, H.K., Nieuwland, M.G., Dorny, P., Demey, F. and Berkvens, D., 2005. Haemolytic complement activity and humoral immune responses to sheep red blood cells in indigenous chickens and in eight German Dahlem Red chicken lines with different combinations of major genes (dwarf, naked neck and frizzled) of tropical interest, Tropical Animal Health and Production 37:173–186.
Briz, R.C., 1996. Produccion de pollos “label”. In: C.B. Carbó (eds), Zootecnia X: Producciones cunicola e avicola alternativas, 1996, (Ediciones Mundiprensa, Madrid, Spain), 171-191. (in Spanish)
Carbó, C.B., 1995. La avicultura de carne a nivel mundial y de la UE-15. In: C.B. Carbó (eds), Zootecnia V: Avicultura clásica e complementária, 1995, (Ediciones Mundiprensa, Madrid, Spain), 15-31. (in Spanish)
Colles, F.M., Jones, T.A., McCarthy, N., Sheppard, S.K., Cody, A.J., Dingle, K.E., Dawkins, M.S. and Maiden, M.C., 2008. Campylobacter infection of broiler chickens in a free-range environment, Environmental Microbiology 10, 2042–2050.
Cortes, C., 1991. O frango label, Vida Rural 21, 18. (in Portuguese)
Crawford, R.D., 1976. Incomplete dominance of the gene for naked neck in domestic fowl, Poultry Science 55, 820–822.
Debb, N. and Cahaner, A., 1999. The effects of naked neck genotypes, ambient temperature, and feeding status and their interactions on body temperatures and performance of broilers, Poultry Science 78, 1341–1346.
Debb, N. and Cahaner, A., 2001. Genotype-by-environment interaction with broiler genotypes differing in growth rate. 1. The effects of high ambient temperatures and naked-neck genotype on lines differing in genetic background, Poultry Science 80, 695–702.
Fanatico, A.C., Pillai, P.B., Cavitt, L.C., Owens, C.M. and Emmert, J.L., 2005a. Evaluation of slower-growing broiler genotypes grown with and without outdoor access, growth performance and carcass yield, Poultry Science 84, 1321–1327.
Fanatico, A.C., Cavitt, L.C., Pillai, P.B., Emmert, J.L and Owens, C.M., 2005b. Evaluation of slower-growing broiler genotypes grown with and without outdoor access, meat quality, Poultry Science 84, 1785–1790.
Fanatico, A.C., Pillai, P.B., Cavitt, L.C., Emmert, J.L., Meullenet, J.F. and Owens, C.M., 2006. Evaluation of slower-growing broiler genotypes grown with and without outdoor access, sensory attributes, Poultry Science 85, 337–343.
Fathi, M.M., El-Hattar, A.H., Ali, U.M. and Nazmi, A., 2008. Effect of the naked neck gene on carcase composition and immunocompetence in chickens, British Poultry Science 49, 103–110.
Hanzl, C.J. and Soames, R.G. Jr., 1983. The effect of the naked neck gene, Na, on growth and carcass composition of broilers raised in two temperatures, Poultry Science 62, 934-941.
Leeson, S., Caston, L. and Summers, J.D., 1996. Broiler response to diet energy, Poultry Science 75, 529–535.
Mourão, J.L., Pinheiro, V.M., Prates, J.A., Bessa, R.J., Ferreira, L.M., Fontes, C.M. and Ponte, P.I., 2008. Effect of dietary dehydrated pasture and citrus pulp on the performance and meat quality of broiler chickens, Poultry Science 87, 733–743.
Nielsen, B.L., Thomsen, M.G., Sǿrensen P and Young, J.F., 2003. Feed and strain effects on the use of outdoor areas, British Poultry Science 44, 161-169.
Otim, M.O., Kabagambe, E.K., Mukiibi, G.M., Christensen, H., Bisgaard, M., 2007. A study of risk factors associated with Newcastle disease epidemics in village free-range chickens in Uganda, Tropical Animal Health and Production 39:27–35.
Ponte, P.I., Mendes, I., Quaresma, M., Aguiar, M.N., Lemos, J.P., Ferreira, L.M., Soares, M.A., Alfaia, C.M., Prates, J.A. and Fontes, C.M., 2004. Cholesterol levels and sensory characteristics of meat from broilers consuming moderate to high levels of alfalfa, Poultry Science 83, 810–814.
Ponte, P.I., Prates, J.A., Crespo, J.P., Crespo, D.G., Mourão, J.L., Alves, S.P., Bessa, R.J., Chaveiro-Soares, M.A., Ferreira, L.M. and Fontes, C.M., 2008a. Improving the lipid nutritive value of poultry meat through the incorporation of dehydrated leguminous-based forage in the diet for broiler chicks, Poultry Science 87, 1578–1594.
Ponte, P.I., Rosado, C.M., Crespo, J.P., Crespo, D.G., Mourão, J.L., Chaveiro-Soares, M.A., Brás, J.L., Gama, L.T., Prates, J.A., Ferreira, L.M. and Fontes, C.M., 2008b. Pasture intake improves the performance and meat sensory attributes of free-range broilers, Poultry Science 87, 71–79.
Raju, M.V., Sunder, G.S., Chawak, M.M., Rao, S.V. and Sadagopan, V.R., 2004. Response of naked neck Nana. and normal nana broiler chickens to dietary energy levels in a subtropical climate, British Poultry Science 45, 186–193.
Sanchez, L., de la Calle, B., Iglesias, A. and Sanchez, B., 2005. Use of native ancestries in the production of label chicken, Archivos de Zootecnia 54, 491-496.
Sauveur, B., 1997. Les critéres et facteurs de qualité des poulets label rouge, Productions Animaux 10, 219-226. (in French)
Sayila, A., 1996. Zambia in poultry export drive. World Poultry 12(4): 12–19.
Terregino, C., De Nardi, R., Guberti, V., Seremin, M., Raffini, E., Martin, A.M., Cattoli, G., Bonfanti, L. and Capua, I., 2007. Active surveillance for avian influenza viruses in wild birds and backyard flocks in Northern Italy during 2004 to 2006, Avian Pathology. 36, 337–344.
Upindi, B.G., 1990. Smallholder rural poultry production in Malawi. Proceedings of the smallholder rural poultry production seminar, Thessaloniki (Greece), 1990 (CTA—Technical Centre for Agricultural and Rural Cooperation, Wageningen, the Netherlands; Occasional Publication Volume 2), 141–146.
Yalçin, S., Testik, A., Ozcan, S., Settar, P., Celen, F. and Cahaner, A., 1997. Performance of naked neck and normal broilers in hot, warm and temperate climates, Poultry Science 76, 930–937.
Yalçin, S., Ozcan, S., Açikgöz, Z. and Ozkan, K., 1998. Influence of dietary energy on bird performance, carcase parts yields and nutrient composition of breast meat of heterozygous naked neck broilers reared at natural optimum and summer temperatures, British Poultry Science 39, 633–638.
Yalçin, S., Ozkan, S., Türkmut, L. and Siegel, P.B., 2001. Responses to heat stress in commercial and local broiler stocks. 1. Performance traits. British Poultry Science 42, 149–152.
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Authors would like to thank PRODEP for financial support and acknowledge technical and material assistance from Luís Gabirro, Julio Osório and the Interaves Company (Alenquer, Portugal). Valuable contribution from Armando Ramalho de Almeida is greatly appreciated.
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de Almeida, A.M., Zuber, U. The effect of the Naked Neck genotype (Nana), feeding and outdoor rearing on growth and carcass characteristics of free range broilers in a hot climate. Trop Anim Health Prod 42, 99–107 (2010). https://doi.org/10.1007/s11250-009-9391-y
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DOI: https://doi.org/10.1007/s11250-009-9391-y