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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Fathi M M, El-Attar A H, Ali U M, Nazmi A

Department of Poultry Production, Ain Shams University, Cairo, Egypt.

Br Poult Sci. 2008 Mar;49(2):103-10. doi: 10.1080/00071660802005137.

An experiment was conducted to study the effect of naked neck gene (Na) on carcase measurements and some immunological responses of chickens. 2. The presence of naked neck gene in a single or double state increased body weight. 3. The naked neck genotypes (NaNa or Nana) exhibited higher relative weight of dressed carcase, drumstick and breast muscles compared to normally feathered individuals (nana). The proportion of abdominal fat was decreased in both naked neck genotypes compared with normally feathered ones. 4. A higher (non-specific) cell-mediated immune response was evoked in Na gene bearing birds. 5. Higher concentrations of antibodies occurred after injection of sheep red blood cells into naked neck birds, particularly at 14 d post-secondary injection. 6. The NaNa birds had a higher heterophil/lymphocyte ratio than Nana and nana siblings.

进行了一项实验，以研究裸颈基因（Na）对鸡胴体测量和一些免疫反应的影响。2. 单态或双态裸颈基因的存在增加了体重。3. 与正常羽毛个体（nana）相比，裸颈基因型（NaNa或Nana）的屠体、鸡腿和胸肌相对重量更高。与正常羽毛个体相比，两种裸颈基因型的腹部脂肪比例均降低。4. 携带Na基因的鸡引发了更高的（非特异性）细胞介导免疫反应。5. 向裸颈鸡注射绵羊红细胞后，抗体浓度更高，尤其是在二次注射后14天。6. NaNa鸡的嗜异性粒细胞/淋巴细胞比例高于Nana和nana同胞。

Fathi M M, El-Attar A H, Ali U M, Nazmi A

Department of Poultry Production, Ain Shams University, Cairo, Egypt.

Br Poult Sci. 2008 Mar;49(2):103-10. doi: 10.1080/00071660802005137.

An experiment was conducted to study the effect of naked neck gene (Na) on carcase measurements and some immunological responses of chickens. 2. The presence of naked neck gene in a single or double state increased body weight. 3. The naked neck genotypes (NaNa or Nana) exhibited higher relative weight of dressed carcase, drumstick and breast muscles compared to normally feathered individuals (nana). The proportion of abdominal fat was decreased in both naked neck genotypes compared with normally feathered ones. 4. A higher (non-specific) cell-mediated immune response was evoked in Na gene bearing birds. 5. Higher concentrations of antibodies occurred after injection of sheep red blood cells into naked neck birds, particularly at 14 d post-secondary injection. 6. The NaNa birds had a higher heterophil/lymphocyte ratio than Nana and nana siblings.

进行了一项实验，以研究裸颈基因（Na）对鸡胴体测量和一些免疫反应的影响。2. 单态或双态裸颈基因的存在增加了体重。3. 与正常羽毛个体（nana）相比，裸颈基因型（NaNa或Nana）的屠体、鸡腿和胸肌相对重量更高。与正常羽毛个体相比，两种裸颈基因型的腹部脂肪比例均降低。4. 携带Na基因的鸡引发了更高的（非特异性）细胞介导免疫反应。5. 向裸颈鸡注射绵羊红细胞后，抗体浓度更高，尤其是在二次注射后14天。6. NaNa鸡的嗜异性粒细胞/淋巴细胞比例高于Nana和nana同胞。