Etudes Comparees de la Croissance des Poules Locales (Gallus Gallus) Et D’une Souche Label Au Cameroun.

J. Fotsa, D. Kamdem, X. Rognon, M. Tixier-Boichard, D. Fomunyam, J. Choupamom, J. Tchoumboue, Y. Manjeli, A. Bordas
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引用次数: 1

Abstract

Les performances de croissance des populations de poules locales des hauts plateaux (Regions de l’Ouest et du Nord-Ouest) et des forets ont ete evaluees en station en presence des souches commerciales de type label. L’objet de l’etude a ete d’avoir une meilleure connaissance des potentialites de ces deux types genetiques afin de developper des strategies ulterieures de leur amelioration genetique. Chaque type genetique etait eleve separement de l’eclosion jusqu’a la 52eme semaine et etait soumis aux memes soins de sante, de management et d’alimentation. Les principaux resultats montrent que les mâles labels normaux (DW*N) sont 48,75%, 49,55% et 41,98% plus lourds a 16 semaines d’âge que leurs homologues locaux respectifs du Centre, du Sud et du Nord-Ouest/Ouest (NO/OU). L’indice de consommation entre 12 et 16 semaines d’âge est de 3,16 pour le DW*N et varie de 3,92 a 4,16 chez les ecotypes locaux. Les femelles normales ‘DW*N’ (1550g) et naines ‘DW*DW’ (1260 g) sont plus lourdes que la femelle locale la plus lourde (889g) du Nord-Ouest/Ouest. Les indices de consommation sont de 4,62 (DW*N et DW*DWW), de 4,94 (Centre), de 4,31 (NO/OU) et de 4,35 (Sud). Chez les femelles adultes a 18 semaines, la DW*N (1792 g) a un poids corporel superieur a celui de la DW*DWW (1453 g) tandis que les femelles du NO/OU (964 g), du Centre (960 g) et du Sud (1047 g) sont plus legeres dans leur ensemble. La mortalite en station a ete elevee chez les jeunes mais inferieure a 8% de 18 a 52 semaines d’âge. Il est conclu que le label se presente comme le type le plus indique pour ameliorer les performances ponderales et squelettiques des poules locales dans une strategie utilisant le croisement. Mots cles : Cameroun, poule locale, poulet label, croissance, mesures squelettiques, mortalite. The growth of local chickens collected from the Western Highlands and the Forest zones of Cameroon was evaluated under intensive management alongside with a commercial label. The aim was to record the potentials of local chickens for developing appropriate genetic improvement strategies. Each genetic type was reared separately from hatching to week 52 of age and was subjected to the same health care, management and feeding. Results showed that normal commercial males (DW*N) were 48.75%, 49.55% and 41.98% heavier at 16th week than their counterparts from Centre, south and North-West/West (NO/ OU) ecotypes. Feed conversion ratios between 12 and 16 weeks of age were 3.16 for DW*N and varied from 3.92 to 4.16 for local ecotypes. Normal (DW*N) and dwarf (DW*N) local females weighed 1550g and 1260g, respectively and were heavier that the heaviest local hen (889g) from the NO/OU. Feed conversion ratios were 4.62 (DW*N and DW*DW), 4.94 (Centre), 4.31 (NO/OU) and 4.35 (South). At 18 weeks of age, normal females ‘DW*N’ (1792 g) were heavier than their dwarf ‘DW*DW’ counterparts (1453 g) while hens from NO/OU (964 g), Centre (960 g) and South (1047 g) were overall lighter. Mortality rate was highest in the growing phase; but less than 8% from 18 to 52 weeks of birds’ age. It was concluded that commercial labels could potentially be used for improving local chicken growing performances through crossbreeding. Key words: Cameroon, local chicken, commercial label, growth, skeletal measurements, mortality
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喀麦隆当地母鸡(Gallus Gallus)和标签品系生长的比较研究。
在高地(西部和西北部地区)和森林地区,对当地母鸡种群的生长性能进行了评价。这项研究的目的是更好地了解这两种遗传类型的潜力,以便制定进一步的遗传改进策略。每个基因类型从孵化到52周分别饲养,并接受相同的护理、管理和喂养。主要结果显示,正常标签雄性(DW*N)在16周龄时比中部、南部和西北/西部(NO/OU)的当地同行重48.75%、49.55%和41.98%。DW*N 12 - 16周龄的消费指数为3.16,本地生态型的消费指数为3.92 - 4.16。正常雌性“DW* n”(1550g)和矮雌性“DW*DW”(1260g)比西北/西部地区最重的本地雌性(889g)更重。消费指数分别为4.62 (DW*N和DW*DWW)、4.94(中部)、4.31 (NO/OU)和4.35(南部)。18周龄成年雌性DW*N (1792 g)体重高于DW*DWW (1453 g)体重,而NO/OU (964 g)、中部(960 g)和南部(1047 g)体重较轻。度假区的死亡率在年轻人中较高,但在18 - 52周龄时低于8%。结论是,通过杂交策略,该标签是提高本地母鸡体重和骨骼性能的最合适类型。关键词:喀麦隆,本地鸡,标签鸡,生长,骨骼测量,死亡率。从喀麦隆西部高地和森林地区收集的当地鸡的生长情况在集约化管理和商业标签下进行了评估。目标是记录当地鸡在制定适当的遗传改良战略方面的潜力。chacun genetic型池塘里分别从hatching week of age and was橡皮to the same 52 health care, management and供膳。结果显示,正常商业雄性(DW*N)在第16周比来自中部、南部和西北/西部(无/或)生态型的对应物种高48.75%、49.55%和41.98%。DW*N 12 ~ 16周龄的饲料转化率为3.16,本地生态型的饲料转化率为3.92 ~ 4.16。普通母鸡(DW*N)和矮母鸡(DW*N)本地母鸡的体重分别为1550g和1260g,比NO/OU的最大本地母鸡(889g)重。饲料转化率分别为4.62 (DW*N和DW*DW)、4.94(中)、4.31 (NO/OU)和4.35(南部)。在18周大时,正常雌性' DW* n '(1792克)比它们的矮' DW* d '(1453克)重,而来自NO/OU(964克)、中部(960克)和南部(1047克)的母鸡整体较轻。在成长阶段死亡率最高;= =地理= =根据美国人口普查局的数据,该县总面积为,其中土地和(1.2%)水。它的结论是,商业标签可以通过杂交提高当地鸡的生长性能。关键词:喀麦隆,本地鸡,商业标签,生长,骨骼测量,死亡率
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