Diversités phénotypique et morphométrique des poulets locaux (Gallus gallus) de deux zones agroécologiques de Côte d'Ivoire*

Yapi-Gnaore, Chia Valentine; Loukou, N.E.; N'Guetta, Assanvo Simon Pierre; Kayang, Boniface B.; Rognon, Xavier; Tixier‐Boichard, Michèle; Touré, Gnénékita; Yacouba, Coulibaly; Karim, Issaka Youssao Abdou

doi:10.1684/agr.2010.0436

Cited by 10 publications

(11 citation statements)

References 5 publications

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“…The same goes for live weight and all biometric measurements which were in favor of males. This result is in agreement with those of other authors ( Yapi-Gnaore et al,2010 ; Adeoye et al,2017 ). Current data demonstrated that sex influenced most biometric characteristics of domestic geese.…”

Section: Discussionsupporting

confidence: 94%

Phenotypic and morphometric characterization of domestic geese raised in northern Benin

Azalou,

Assani,

Kpomasse

et al. 2024

Poultry Science

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Section: Discussionsupporting

confidence: 94%

Phenotypic and morphometric characterization of domestic geese raised in northern Benin

Azalou,

Assani,

Kpomasse

et al. 2024

Poultry Science

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“…This is the case of the yellow shank phenotype due to a recessive autosomal mutation at the W locus [ 50 ] found in all commercial layers, either white-egg or brown-egg, and in several broiler lines, whereas the wild type is a grey-blue shank colour. Previous surveys showed that the yellow shank phenotype is quite rare in Benin (5% [ 14 ]) and Côte d’Ivoire (15% [ 51 ]) or in other African countries such as Senegal (4% [ 52 ]), while it is much more common either in Cameroon (31 to 38% [ 53 , 54 ]) or Morocco (60% in the studied sample; Benabdeljelil, personal observation). Furthermore, the presence of the W mutation was found to be correlated with an improvement of anatomical traits in Cameroon [ 55 ].…”

Section: Discussionmentioning

confidence: 86%

“…Such preference has the effect that the sale price of local chickens (and eggs) is higher than that of products from commercial lines in African countries, including those studied here [ 49 , 56 - 59 , 62 , 63 ]. We also observed that phenotypic variability is very important due to the diversified social uses of local chickens [ 51 , 54 , 64 ] such as religious rituals or indigenous pharmacopeia. Some traits may be retained from industrial birds when they have a relative advantage, particularly the white color, as described by [ 6 ] who observed that a white plumage color was a peace symbol in Benin.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, a large part of the human groups living in the south-east part of Côte d’Ivoire and south-west part of Ghana belong to the same ethnic group, namely the Akan, originating from Ghana [ 68 , 69 ]. Among others, these groups share most of the same cultural practices [ 70 ] implying similar uses of chicken resources [ 51 ] as part of this cultural background. Nevertheless, the admixture pattern could be related to commercial exchanges amplified by the high mobility of the people and the fact that chickens can be easily freighted [ 51 ], limiting the extent of genetic differentiation among areas.…”

Section: Discussionmentioning

confidence: 99%

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Gene diversity, agroecological structure and introgression patterns among village chicken populations across North, West and Central Africa

et al. 2012

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BackgroundChickens represent an important animal genetic resource for improving farmers’ income in Africa. The present study provides a comparative analysis of the genetic diversity of village chickens across a subset of African countries. Four hundred seventy-two chickens were sampled in 23 administrative provinces across Cameroon, Benin, Ghana, Côte d’Ivoire, and Morocco. Geographical coordinates were recorded to analyze the relationships between geographic distribution and genetic diversity. Molecular characterization was performed with a set of 22 microsatellite markers. Five commercial lines, broilers and layers, were also genotyped to investigate potential gene flow. A genetic diversity analysis was conducted both within and between populations.ResultsHigh heterozygosity levels, ranging from 0.51 to 0.67, were reported for all local populations, corresponding to the values usually found in scavenging populations worldwide. Allelic richness varied from 2.04 for a commercial line to 4.84 for one population from Côte d’Ivoire. Evidence of gene flow between commercial and local populations was observed in Morocco and in Cameroon, which could be related to long-term improvement programs with the distribution of crossbred chicks. The impact of such introgressions seemed rather limited, probably because of poor adaptation of exotic birds to village conditions, and because of the consumers’ preference for local chickens. No such gene flow was observed in Benin, Ghana, and Côte d’Ivoire, where improvement programs are also less developed. The clustering approach revealed an interesting similarity between local populations found in regions sharing high levels of precipitation, from Cameroon to Côte d’Ivoire. Restricting the study to Benin, Ghana, and Côte d’Ivoire, did not result in a typical breed structure but a south-west to north-east gradient was observed. Three genetically differentiated areas (P < 0.01) were identified, matching with Major Farming Systems (namely Tree Crop, Cereal-Root Crop, and Root Crop) described by the FAO.ConclusionsLocal chickens form a highly variable gene pool constituting a valuable resource for human populations. Climatic conditions, farming systems, and cultural practices may influence the genetic diversity of village chickens in Africa. A higher density of markers would be needed to identify more precisely the relative importance of these factors.

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“…Traditional poultry farming in sub-Saharan Africa and more specifically in Togo, contributes to the strengthening of family farming through its contribution to the creation of jobs, incomes and the achievement of food security objectives for rural households [1][2][3] . In recent decades, with the rapid urbanization of rural areas, intensive poultry farming is developing.…”

Section: Introductionmentioning

confidence: 99%

Morpho-Biometric Characterization of Indigenous Guinea fowl (Numida meleagris) Populations in Northern Togo

Soara¹,

Talaki²,

Dayo³

et al. 2020

International J. of Poultry Science

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Objective: The present study aimed at carrying out the morpho-biometric characterization of indigenous guinea fowl populations.Materials and Methods: Data collection was conducted between March and July 2018 in two agroecological zones in northern Togo.The study was carried out on 738 adult guinea fowl. Each animal was described by direct observation. Body weight and measurements were recorded. Results: The results revealed twelve colours of the plumage with a dominance of Bonaparte (39.0%) and Pearl grey (27.1%) colours and a rarity of Cinnamon pied (0.7%), Isabelle (0.3%) and Coral blue (0.1%) colours. The plumage was mostly smooth (90.5%). The eyes were mostly brown (57.0%) but Albino guinea fowl predominantly had white colour (85.2%) for the eye. Regardless of the phenotype, the helmet was curved (73.2%) and mumps white-bluish colour (85.5%). In Atakora, the beak was brown (81.3%), the wattles were redwhite (49.8%), the shanks were black-red (32.6%) and the toes were red (47.6% ) while in the Dry Savannah the beak was red (52.9%), the wattles were red-bluish (38.4%), the shanks were black-orange (12.3%) and the toes were grey (35.2%). For the beak length, drumstick length, body length and body weight, the Dry Savannah guinea fowl showed significantly (p<0.05) higher values than those of Atakora guinea fowl. Moreover, guinea fowl with Pearl grey phenotype (1.36±0.28 kg) were heavier (p<0.05) than the other phenotypes. Conclusion: Positive relationship could not be established between phenotype and biometric characteristics in this study. Further studies are required using molecular and zootechnical information to establish relationship between different phenotypes.

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Diversités phénotypique et morphométrique des poulets locaux (Gallus gallus) de deux zones agroécologiques de Côte d'Ivoire*

Cited by 10 publications

References 5 publications

Phenotypic and morphometric characterization of domestic geese raised in northern Benin

Phenotypic and morphometric characterization of domestic geese raised in northern Benin

Gene diversity, agroecological structure and introgression patterns among village chicken populations across North, West and Central Africa

Morpho-Biometric Characterization of Indigenous Guinea fowl (Numida meleagris) Populations in Northern Togo

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