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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2013 > Volume 12 Number 8 > U.P. Tougan, M. Dahouda, C.F.A. Salifou, S.G. Ahounou, M.T. Kpodekon, G.A. Mensah, D.N.F. Kossou, C. Amenou, C.E. Kogbeto, A. Thewis and I.A.K. Youssao

Variability of Carcass Traits of Local Poultry Populations of Gallus gallus Species of Benin

U.P. Tougan, M. Dahouda, C.F.A. Salifou, S.G. Ahounou, M.T. Kpodekon, G.A. Mensah, D.N.F. Kossou, C. Amenou, C.E. Kogbeto, A. Thewis and I.A.K. Youssao
D.N.F. Kossou , C. Amenou , C.E. Kogbeto , A. Thewis and I.A.K. Youssao 1 1 1 4 1 Department of Animal Production and Health, Polytechnic School of Abomey-Calavi, 1 01 BP 2009, Cotonou, Republic of Benin, Benin ²Department of Animal Production, Faculty of Agronomic Science, University of Abomey-Calavi, 01 BP 526, Republic of Benin, Benin Agricultural Research Center of Agonkanmey, National Institute of Agricultural Research of Benin, 3 01 BP 884, Cotonou 01, Republic of Benin, Benin Animal Sciences Unit, Gembloux Agro Bio Tech, University of Liege, 4 ULg-Gx ABT-Passage des Deportes, 2-5030, Gembloux, Belgium
Abstract :

The local poultry population of Benin is composed of various ecotypes including chickens Holli, Sahoue, Fulani, North and South. To better characterize them, our study aims to assess their carcass traits according to genetic type, breeding system and slaughter age. Thus, 260 chickens of which 52 chickens of each ecotype were divided in two lots and reared respectively under traditional and improved breeding system. For each breeding system, 26 cockerels of each ecotype were slaughtered at 20, 24 and 28 weeks old for carcass traits study. The results show that the live weight, the carcass weight, the weight of the cuts of thigh-drumsticks and wings of Holli chickens were the highest (p<0.001). The lowest live weight and carcass weight were noted in South ecotype (p<0.001). The carcass yields of the five genetic types of chicken were similar (p>0.05). The breast weight of Holli and Fulani were similar (p>0.05) but heavier (p<0.001) than the one of Sahoue, North and South ecotypes. The live weight and the carcass weight of chickens reared under improved breeding system were higher than those of traditional system (p<0.01). The carcass drip loss was more important in chickens bred under traditional system (p<0.001). The live weight and the carcass cuts value were significantly affected by slaughter age (p<0.001). The best carcass yields were recorded at 24 weeks (p<0.001) for both rearing systems. Therefore, the ideal slaughter age of indigenous chickens of Benin is 24 weeks.

Keywords :
Indigenous chicken, ecotype, carcass traits, Benin

Date Deposited : 19 Mar 2015 09:52

Last Modified : 19 Mar 2015 09:52

Official URL: http://www.pjbs.org/ijps/back.htm

Volume 12, Number 8, - 2013 , ISSN 1682-8356

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