Heat Tolerance Attributes of Nigerian Locally Adapted Chickens as Affected by Strain and Some Qualitative Traits

摘要: This study was undertaken to determine the heat tolerance attributes of Nigerian locally adapted chicken as affected by strain and some qualitative traits. The experimental birds consisted four matured strains. A total number 120 healthy consist of30 each Naked Neck, Normal Feather, Fulani Frizzle feather. Each bird monitored measured for comb cups, length, height, wattle height width at beginning experiment recorded strain. Data were obtained on a daily basis (afternoon) 12 weeks. measurement taken include: Numbers Comb Wattle width. considered rectal temperature, pulse rate respiratory rate. Chicken sex had significant effect (P 0.05) shown in temperature. cups also < rates. lowest rates with measuring 5cm high 4cm long. Regarding stress index, values having combs that 8cm 7cm observed whose 14 8 respectively. There size variation index. while index occurred diameter. However, 6 cm It can therefore, concluded strain, traits chickens affect attribute.