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Phenotypic characterization of indigenous chicken populations in Southeastern Oromia Regional State of Ethiopia

Published online by Cambridge University Press:  08 December 2014

Deneke Negassa
Affiliation:
Department of Animal Science, Adama Science and Technology University, Adama, Ethiopia
Aberra Melesse*
Affiliation:
School of Animal and Range Sciences, Hawassa University, Hawassa, Ethiopia Institute of Animal Nutrition, Hohenheim University, Stuttgart, Germany
Sandip Banerjee
Affiliation:
School of Animal and Range Sciences, Hawassa University, Hawassa, Ethiopia
*
Correspondence to: Aberra Melesse, Institute of Animal Nutrition, Hohenheim University, Emil-Wolffs-Str. 8 & 10, 70593 Stuttgart, Germany. emails: [email protected]; [email protected]
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Summary

The objective of this study was to characterize the native chickens reared in three agro-ecological zones of Southeastern Oromia Regional State of Ethiopia. Data on visual appraisal and linear body measurements were obtained from a total of 600 matured local chickens of both sexes drawn from 240 households. The results indicated that the average flock size, age at first egg of hens and eggs produced per clutch were 11.9 heads, 6.2 months and 15.4 eggs, respectively. The majority of the male chicken possessed snake head shape (60.7 percent) and most of them had rose combs (57.9 percent), red feather plumage (46.1 percent), yellow shanks (86.3 percent), red earlobes (84.2 percent) and yellow skin (56.8 percent). Majority of the hens possessed single combs (43.5 percent), red earlobes (77.3 percent), yellow shanks (44.4 percent), yellowish brown feather (27.4 percent) followed by red (24.2 percent) and black (21.2 percent). The cocks were generally heavier (1.39 kg) than the hens (1.22 kg). The average values for breast angle (degrees), body length, body width, shank length, shank circumference, keel bone length, wing span, comb length and beak length of the cocks were 45.9, 24.1, 24.9, 7.43, 3.86, 9.63, 7.99, 4.86 and 1.91 cm, respectively. The corresponding values for the hens were 40.2, 22.7, 23.8, 7.43, 3.46, 8.95, 7.40, 2.47 and 1.71. The values for wing span, comb length, beak length, body weight, breast angle and keel bone length differed (P < 0.05) across the agro-ecologies. The best predictor for assessing the body weight of hens was breast angle and body length, whereas in the cocks it was best estimated using breast angle and shank circumference values. The present study suggests that indigenous chickens in the study area possess useful economic traits that could be improved through systematic breeding for enhanced productivity under scavenging production systems.

Résumé

L'objectif de cette étude a été de caractériser les poules indigènes élevées dans trois zones agro-écologiques de l'État Régional d'Oromia, au Sud-est de l'Éthiopie. Différentes données ont été collectées par observation et par mesures corporelles linéaires sur un total de 600 volailles locales adultes des deux sexes provenant de 240 foyers. Les résultats ont indiqué que la taille des groupes, l'âge des poules au premier œuf et les œufs pondus par couvée ont été en moyenne de 11,9 têtes, 6,2 mois et 15,4 œufs, respectivement. La plupart des mâles avaient une tête en forme de serpent (60,7 pour cent), une crête en rose (57,9 pour cent), un plumage de couleur rouge (46,1 pour cent), les tarses jaunes (86,3 pour cent), les oreillons rouges (84,2 pour cent) et la peau jaune (56,8 pour cent). La plupart des poules possédaient une crête simple (43,5 pour cent), des oreillons rouges (77,3 pour cent), des tarses jaunes (44,4 pour cent) et un plumage marron jaunâtre (27,4 pour cent), rouge (24,2 pour cent) ou noir (21,2 pour cent). En général, les coqs ont été plus lourds que les poules (1,39 versus 1,22 kg). Chez les coqs, les valeurs moyennes d'inclinaison de la poitrine (angle en degrés), de la longueur du corps, de la largeur du corps, de la longueur des tarses, de la circonférence des tarses, de la longueur du bréchet, de la longueur de l'aile, de la longueur de la crête et de la longueur du bec ont été de 45,9, 24,1, 24,9, 7,43, 3,86, 9,63, 7,99, 4,86 et 1,91 cm, respectivement. Les valeurs correspondantes pour les poules ont été de 40,2, 22,7, 23,8, 7,43, 3,46, 8,95, 7,40, 2,47 et 1,71, respectivement. Des différences significatives (p < 0.05) ont été décelées entre les zones agro-écologiques pour la longueur de l'aile, la longueur de la crête, la longueur du bec, le poids corporel, l'inclinaison de la poitrine et la longueur du bréchet. Les meilleurs prédicteurs pour estimer le poids corporel des poules ont été l'inclinaison de la poitrine et la longueur du corps alors que les variables qui ont prédit le mieux le poids des coqs ont été l'inclinaison de la poitrine et la circonférence des tarses. La présente étude suggère que les poules autochtones du territoire étudié possèdent des caractères d'intérêt économique qui pourraient être améliorés au moyen d'une sélection systématique cherchant à optimiser la productivité sous des systèmes d'obtention de la nourriture par picorage.

Resumen

El objetivo de este estudio fue caracterizar las gallinas nativas criadas en tres zonas agroecológicas del sudoriental Estado Regional de Oromía en Etiopía. Se recogieron diferentes datos por observación y por medidas corporales lineales sobre un total de 600 aves locales maduras, de ambos sexos, tomadas de 240 hogares. Los resultados indicaron que, de media, el tamaño de los grupos, la edad de las gallinas al primer huevo y los huevos puestos por nidada fueron respectivamente de 11,9 cabezas, 6,2 meses y 15,4 huevos. La mayoría de los machos presentaron cabeza con forma de serpiente (60,7 por ciento), cresta en rosa (57,9 por ciento), plumaje rojo (46,1 por ciento), tarsos amarillos (86,3 por ciento), orejillas rojas (84,2 por ciento) y piel amarilla (56,8 por ciento). La mayoría de las gallinas presentaron cresta sencilla (43,5 por ciento), orejillas rojas (77,3 por ciento), tarsos amarillos (44,4 por ciento) y plumaje marrón amarillento (27,4 por ciento), rojo (24,2 por ciento) o negro (21,2 por ciento). Por lo general, los gallos fueron más pesados que las gallinas (1,39 versus 1,22 kg). En los gallos, los valores medios de inclinación de la pechuga (ángulo en grados), longitud corporal, anchura corporal, longitud de los tarsos, circunferencia de los tarsos, longitud de la quilla, longitud del ala, longitud de la cresta y longitud del pico fueron respectivamente de 45,9, 24,1, 24,9, 7,43, 3,86, 9,63, 7,99, 4,86 y 1,91 cm. Los valores correspondientes para las gallinas fueron de 40,2, 22,7, 23,8, 7,43, 3,46, 8,95, 7,40, 2,47 y 1,71, respectivamente. Los valores de longitud del ala, longitud de la cresta, longitud del pico, peso corporal, inclinación de la pechuga y longitud de la quilla difirieron (p < 0.05) entre las zonas agroecológicas. Los mejores predictores para determinar el peso corporal de las gallinas fueron la inclinación de la pechuga y la longitud corporal mientras que las variables que mejor predijeron el peso de los gallos fueron la inclinación de la pechuga y la circunferencia de los tarsos. El presente estudio sugiere que las gallinas autóctonas del área estudiada poseen características de interés económico que podrían ser mejoradas a través de una selección sistemática encaminada a optimizar la productividad bajo sistemas de alimentación por picoteo de desperdicios.

Type
Research Article
Copyright
Copyright © Food and Agriculture Organization of the United Nations 2014 

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