Pigeon Columba livia

Pigeon2 مصادر موثّقة

تعريف

The domestic pigeon is the farmed and fancied form of the rock dove, kept worldwide in lofts for three quite separate purposes: squab meat, racing and homing, and exhibition, with more than 175 breeds recognised. Meat production is now dominated by China, where 111 million breeding pairs yielded over 1.6 billion squabs in 2021. Pairs are stable and biparental. The hen lays two eggs, both birds incubate for seventeen to eighteen days, and both then secrete crop milk, a prolactin-driven secretion that is over half protein on a dry-matter basis and is the squab's only food for its first days. Squabs are killed at twenty-six to thirty days, before they fly, at roughly 500 g. Clinically that shared crop feeding matters twice over: Trichomonas gallinae passes from parent to nestling in the milk and is a leading burden on the pigeon industry, while pigeon paramyxovirus-1 spreads in droppings and respiratory secretions, torticollis and green diarrhoea appearing seven to fourteen days after infection. Apparently healthy birds shed it, which is why Swiss racing birds must be vaccinated and why feral flocks endanger commercial poultry.

المؤشّرات الحيوية

مدّة الحضانة: 17 – 18
العمر عند أول تكاثر: 5 – 7 months
الوزن عند البلوغ: 0.15 – 1.3 kg

تُعرض المؤشّرات المُوثَّقة فقط. غياب مؤشّر هنا يعني أنه غير مذكور في مرجع موثوق لهذا النوع — لا أنه ناقص من الصفحة.

السلالات — لا يوجد ارتباط

لا سلالة منشورة لهذا النوع بعد. السلالات محصودة بأعداد كبيرة وتنتظر اعتماداً بشرياً قبل أن تُنشر.

كل السلالات ←

العلامات السريرية — لا يوجد ارتباط

لا علامة سريرية منشورة بعد — وهي أيضاً ما ينقص باحث العلامات.

تصفّح المجموعة ←