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PEKİN ÖRDEĞİNİN (Anas platyrhynchos f. dom.) DÖLLENMİŞ VE DÖLLENMEMİŞ YUMURTALARINDA KULUÇKA SÜRESİNCE GÖRÜLEN KÜTLE KAYBI

Mass Loss During Incubation in the Hatched and Unhatched Eggs of Peking Duck (Anas platyrhynchos f. dom.)

Journal Name:

  • Dicle Üniversitesi Ziya Gökalp Eğitim Fakültesi Dergisi

Publication Year:

  • 2008

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
This study was performed to determine the average mass loss as water loss in the incubated (hatched) and unincubated eggs of Peking ducks and to compare with literature. For this purpose, 76 eggs (58 fertilized and 18 unfertilized) were weighed individually through incubation to determine the egg mass losses. Fertilized and unfertilized eggs were differed in the amount of relative total mass lost during incubation: fertilized eggs lost 11.48% and unfertilized eggs lost 8.87% of initial mass. These values are similar with reported values in the literature. Egg mass lose were increased day after day in fertilized eggs, especially in the second half of incubation, but it was stand firm almost in unfertilized eggs. It is suggested that these increase is due to an increase pore density which is accompanying with increased metabolic rates. It is seemed that our results determined by this study different from values which are estimated from equations in the literature. It is postulated that these differences are due to inter/intraspecific variations of the water content and eggshell conduction of eggs and the incubation environment (e.g., temperature, humidity, atmospheric pressure).
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Abstract (Original Language): 
Pekin ördeğinin (Anas platyrhynchos f. dom.) döllenmiş ve döllenmemiş yumurtalarında, laboratuvar koşullarındaki kuluçka sırasında su kaybıyla meydana gelen kütle azalması tespit edilerek, daha önce yapılan çalışmalardan ve bağıntılardan elde edilen sonuçlarla karşılaştırılmıştır. 58 döllenmiş ve 18 döllenmemiş olmak üzere toplam 76 adet yumurtanın kuluçka boyunca gösterdikleri toplam göreceli kütle kaybı, döllenmiş yumurtalarda taze kütlenin %11,48’i ve döllenmemişlerde %8,87’i olarak farklılık göstermiştir. Elde edilen değerlerin genel olarak kuş yumurtalarından beklenen değerlerle uyumlu olduğu görülmüştür. Bir önceki güne göre kaybedilen kütlenin, döllenmiş yumurtalarda —özellikle kuluçkanın ikinci yarısında— günden güne arttığı, döllenmemiş yumurtalarda ise yaklaşık olarak aynı kaldığı belirlenmiştir. Bu artışın, yumurta kabuğundaki incelmeden çok, artan metabolik faaliyet ile birlikte kabuktaki gözenek sayısı artışından kaynaklandığı ileri sürülmektedir. Bu çalışmada elde edilen değerlerin literatürdeki denklemlerden elde edilen değerler ile farklılık gösterdiği tespit edilmiştir. Bu farklılığa tür içi/türler arası farklı yumurta içeriği oranlarının ve/veya kabuk iletimindeki farklılıkların ve/veya farklı ısı, nem, atmosfer basıncı gibi kuluçka ortam koşullarının neden olmuş olabileceği ileri sürüldü.
FULL TEXT (PDF): 
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  • 1
151-159
  • Turkish

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