Journals / Turkish Journal of Veterinary and Animal Sciences / 2008 / Cilt: 32 - Sayı: 4
Effects of Age, Sex, Feather Colour, Body Measurements, and Body Weight on Down and Feather Yield in Native Turkish Geese
- Pages
- 293–297
- DOI
- —
Abstract
The aim of this study was to calculate the feather and down production by native Turkish geese and to investigate the effects on these traits. In total 145 native Turkish geese were used in the experiment. The birds were divided into 4 groups according to their feather colour at 10 and 12 weeks of ages. They were individually weighed and measured with the help of wing tags. Geese at 10 weeks had heavier feathers than those at 12 weeks, while geese at 12 weeks produced more down (P < 0.01). As detected in down weight, the older group has a greater amount of total feathers than the younger group (P < 0.001). Male geese produced significantly heavier feathers and down than females (P < 0.05). While black geese produced the heaviest feathers, yellow geese produced the heaviest down (P < 0.05). White geese generated the lightest weights of the products. The strongest correlation was found between total feather yield and chest girth (0.75). Reasonable correlations were detected between liveweight and other traits (0.36-0.62). This is not a widely studied subject in Turkey; therefore, the data obtained can be used for the identification of native Turkish geese.
Özet
Çal›flmada yerli kazlar›n yumuflak ve sert tüy verimlerinin tespiti ve bu verimler üzerine etki eden faktörlerinin belirlenmesi amaçlanm›flt›r. Bu amaç dâhilinde 145 adet yerli kaz kullan›lm›flt›r. On ve oniki haftal›k kazlar kendi içlerinde renklerine göre 4 gruba ayr›lm›flt›r. Kazlara tak›lan kanat numaralar› sayesinde bireysel ölçüm ve tart›m düzenli bir flekilde yap›lm›flt›r ve 10 haftal›k kazlar 12 haftal›klardan daha a¤›r sert tüy verirken, 12 haftal›k kazlar 10 haftal›klardan daha fazla yumuflak tüy vermifltir (P < 0,01). Yumuflak tüy veriminde belirlendi¤i gibi yafll› kazlar genç kazlara göre daha fazla toplam tüy verimine ulaflm›flt›r (P < 0,001). Bunun yan›nda erkek kazlar›n da diflilere göre daha fazla sert ve yumuflak tüy ürettikleri belirlenmifltir (P < 0,05). Önemli farkl›l›klar tüy renginde de ortaya ç›km›fl (P < 0,05) ve siyah kazlar sert tüy veriminde önde iken sar› kazlar en fazla yumuflak tüyü üretmifl, beyaz kazlar ise incelenen her ürün için en düflük düzeyde kalm›fllard›r. En kuvvetli korelasyonlar toplam tüy verimi ile gö¤üs çevresi (0,75) aras›nda bulunurken, canl› a¤›rl›k ile di¤er özellikler aras›nda orta düzeyde korelasyonlar tespit edilmifltir (0,36-0,62). Bu çal›flmada incelenen konu Türkiye’de yayg›n bir çal›flma alan› bulamad›¤›ndan dolay›, elde edilen veriler yerli kazlar›n tan›mlanmas›nda kullan›labilecek niteli¤e sahiptir.