Bıldırcınlarda Yumurta Ağırlığı ile Ak Yüksekliği Arasındaki İlişkiler ve Yaygın Kullanılan Kalite Özelliklerindeki Ön Kabullerin Çeşitli Koşullar Altındaki Geçerliliklerinin Araştırılması

Bu çalışmada kuluçkalık Japon bıldırcını yumurtalarında sürü yaşı, depolama süresi ve erken kuluçka döneminde geçen sürenin yumurta ağırlığı ile koyu ak yüksekliği arasındaki ilişkiler üzerine etkileri incelenmiştir. Sürü yaşının 5 farklı seviyesi (8, 12, 18, 25 ve 30. haftalar), depolama süresinin 4 farklı seviyesi (0, 1, 4 ve 7 gün) ve erken kuluçka döneminde geçen sürenin 5 farklı seviyesi (0, 6, 24, 30 ve 48. saatler) incelenmiştir. Bütün yaş dönemlerinde yumurta ağırlığı ile ak yüksekliği arasındaki korelasyonlar önemli bulunmuştur. Koyu ak yüksekliği ile yumurta ağırlığı arasındaki regresyon katsayıları ilgili yaş dönemlerinde sırasıyla 0,115; 0,082; 0,054; 0,085 ve 0,061 mm/g olarak; R2 değerleri ise yine sırasıyla %4,43; 2,1; 1,85; 2,76 ve 2,42 olarak bulunmuştur. Yumurta ağırlığı ile ak yüksekliği arasındaki korelasyon sadece 4 gün süreyle depolanan yumurtalarda önemli bulunmuştur. Regresyon katsayısı 0,061 mm/g, R2 değeri ise %1,77 olarak belirlenmiştir. Kuluçkanın sadece 0 ve 6. saatlerinde ölçülen ak yüksekliği değeri ile yumurta ağırlığı arasındaki korelasyonlar önemli bulunmuştur. Bu saatlerde ak yüksekliği ile yumurta ağırlığı arasındaki regresyon katsayıları sırasıyla 0,0808 ve 0,0809 mm/g olarak, R2 değerleri ise yine sırasıyla %2,44 ve %3,03 olarak belirlenmiştir. Ak yüksekliği ile yumurta ağırlığı arasında, farklı sürü yaşları ve depolama süreleri için geçerli olan sabit bir ilişki bulunamamıştır.

Anahtar Kelimeler:

Ak yüksekliği, Depolama süresi, Sürü yaşı, Yumurta ağırlığı, Yumurta kalitesi

Relationships Between Egg Weight and Albumen Height in Quails and Investigating the Validity of the Presumptions that is in Commonly Used Quality Measurements Under Diverse Conditions

In this study, the effects of flock age, storage time and the time elapsed in the early stages of incubation on the relationships between egg weight and thick albumen height in hatching Japanese quail eggs were investigated. Five different levels of flock age (8, 12, 18, 25 and 30 weeks); 4 different levels of storage period (0, 1, 4 and 7 days) and 5 different levels of elapsed time in the early stages of incubation (0, 6, 24, 30 and 48 hours) were considered. The correlations between egg weight and thick albumen height in all flock ages were found to be significant (P<0.05). The regression coefficients between thick albumen height and egg weight were 0.115, 0.082, 0.054, 0.085 and 0.061 mm/g at the respective age periods; and the R2 values were found to be 4.43, 2.11, 1.85, 2.76, and 2.42 %, respectively. The correlation between egg weight and albumen height was only found to be significant in eggs stored for 4 days. The regression coefficient was determined as 0.061 mm/g, and the R2 value as 1.77 %. The correlations between egg weight and albumen height which were measured at 0 and 6 hours of incubation were only found to be significant. At these elapsed times, the regression coefficients between albumen height and egg weight were determined as 0.0808 and 0.0809 mm/g, and R2 values were determined as 2.44 and 3.03%, respectively. There is no fixed relationship between albumen height and egg weight, which is applicable in all cases, such as different flock ages and storage times.

Keywords:

Albumen height, Egg quality, Egg weight, Flock age, Storage time,

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