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Phenotypes Including Immunocompetence in Scavenging Local Chicken Ecotypes in Tanzania

机译：表型包括免疫能力在清除坦桑尼亚当地鸡的生态型中

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摘要

A study was conducted to determine the variations in physical characters and immunocompetence among scavenging local chicken ecotypes in Tanzania. Eighty-four adult scavenging local chickens from four eco-climatic regions of Tanzania were studied. Measurements of adult body weight, body length, shank length and egg weight and observations of plumage colour and pattern, earlobe colour, skin colour and the shape of the comb were conducted. The antibody response to sheep red blood cells, serum haemolytic complement and the cutaneous response to phytohaemagglutinin-P were assessed. Five ecotypes were identified and named Mbeya, Morogoro-medium, Ching'wekwe, Kuchi and Singamagazi. Singamagazi and Kuchi were significantly heavier, with longer shanks and heavier eggs than the other ecotypes. The average adult body weight for males ranged from 1621 g (Mbeya) to 2915 g (Singamagazi). Average female weights ranged from 1108 g (Morogoro-medium) to 2020 g (Singamagazi). Mean egg weights ranged from 37.65 g (Ching'wekwe) to 45.61 (Singamagazi). The Kuchi had mostly rose and walnut combs, while the other ecotypes were mostly single combed. In each ecotype there were chickens with a high or low antibody response to red blood cells, but there was a significant difference between the ecotypes.
机译：进行了一项研究，以确定在坦桑尼亚清除本地鸡生态型之间的物理特征和免疫能力的变化。研究了来自坦桑尼亚四个生态气候区的八十四只成年清理本地鸡。测量成年体重，体长，小腿长度和卵重，并观察羽毛的颜色和样式，耳垂的颜色，皮肤的颜色以及梳子的形状。评估了对绵羊红细胞的抗体反应，血清溶血补体和对植物血凝素-P的皮肤反应。确定了五种生态型，并命名为姆贝亚，莫罗戈罗中，成威格韦，库奇和新加马加兹。与其他生态型相比，Singamagazi和Kuchi重得多，小腿和卵更重。男性的平均成人体重在1621 g（姆贝亚）至2915 g（Singamagazi）之间。女性的平均体重在1108克（莫罗戈罗中）至2020克（新加坡）之间。鸡蛋平均重量在37.65克（Ching'wekwe）至45.61（Singamagazi）之间。库奇岛的玫瑰和胡桃木梳子居多，而其他生态型大多是单梳子。在每种生态型中，鸡对红细胞的抗体反应均高或低，但生态型之间存在显着差异。

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