The Influences of Maternal Hormones on The Quality Characteristics of Incubating Eggs

Elif Babacanoğlu Çakır

doi:10.18016/ksutarimdoga.vi.1883524

EN TR

The Influences of Maternal Hormones on The Quality Characteristics of Incubating Eggs

Abstract

The quality of the egg formed in the body of the laying hen is determined by hormones transferred to the yolk from the maternal. This study aimed to examine the effects of testosterone and corticosterone in egg yolk and their interaction on egg quality traits. The experimental design was based on averages of significant correlations between steroid hormone levels in a total of 48 hatching egg yolks from the Ross 308 genotype. Based on these mean values, the groups were categorised as low testosterone and low corticosterone (LT and LC) and high testosterone and high corticosterone (HT and HC). Egg, albumen, and shell quality characteristics were measured in all groups. The testosterone hormone in the yolk had a significant effect on the quality characteristics of the egg and albumen, but did not affect shell quality characteristics. Egg weight, shape index, and albumen weight were significantly higher in the LT group than in the HT group. In the LC group, egg and albumen weights increased, while the shape index, albumen height, and shell thickness at the ventral and equatorial ends decreased in the LC group compared to the HC group. The interaction between egg yolk testosterone and corticosterone had a significant effect on egg weight, shape index, albumen quality traits, shell thickness, and shell density. The findings showed that, in contrast to the individual hormone levels in the egg yolk, the interaction between testosterone and corticosterone levels in the egg yolk more effectively influenced external and internal quality characteristics of the egg. However, steroid-derived hormones in the egg yolk revealed hormone-specific effects on egg formation.

Keywords

Maternal Hormonların Kuluçkalık Yumurtanın Kalite Özelliklerine Etkileri

Öz

Yumurtlayan dişinin vücudunda oluşan yumurtanın kalitesi maternal tarafından yumurta sarısına aktarılan hormonlar ile belirlenir. Bu çalışmada, yumurta sarısındaki testosteron ve kortikosteron hormonlarının etkilerini ve testosteron ile kortikosteron hormonlarının yumurtanın kalite özellikleri üzerindeki etkileşimini incelemek amaçlanmıştır. Ross 308 genotipine ait toplam 48 adet kuluçkalık yumurta sarısında ölçülen steroid hormon düzeyleri arasındaki önemli korrelasyonlardan yola çıkarak elde edilen ortalamalar üzerinden deneme deseni belirlenmiştir. Bu ortalama değerlere göre gruplar düşük testosteron ve kortikosteron (LT ve LC) ile yüksek testosteron ve kortikosteron (HT ve HC) olarak oluşturulmuştur. Tüm gruplarda yumurta, albümin ve kabuk kalite özellikleri ölçülmüştür. Sarıdaki testosteron hormonu yumurtanın ve albüminin kalite özellikleri üzerinde önemli bir etkiye sahipken, kabuk kalite özelliklerini etkilememiştir. Yumurta ağırlığı, şekil indeksi ve albümin ağırlığı LT grubunda HT grubuna göre önemli ölçüde daha yüksek saptanmıştır. HC grubuna göre LC grubunda yumurta ve albümin ağırlıkları artarken, şekil indeksi, albümin yüksekliği, küt ve ekvatoral uçların kabuk kalınlığı HC grubuna kıyasla LC grubunda azalmıştır. Yumurta sarısı testosteron ve kortikosteron arasındaki etkileşimin etkisi yumurta ağırlığı, şekil indeksi, tüm albümin kalite özellikleri, kabuk kalınlığı ve kabuk yoğunluğu üzerinde önemli saptanmıştır. Bulgular, yumurta sarısındaki tek tek hormon düzeylerine karşılık, yumurta sarısı testosteron ve kortikosteron düzeyleri arasındaki etkileşimin yumurtanın iç ve dış kalite özelliklerini daha etkili bir şekilde etkilediğini göstermiştir. Bununla birlikte, yumurta sarısındaki steroid kökenli hormonlar yumurta oluşumu üzerinde hormona özgü etkiler ortaya koymuştur.

Anahtar Kelimeler

Supporting Institution

no

Project Number

Bu çalışma yazarın maddi olanakları ile yapılmıştır. bir proje kapsamında finansal bir destek alınmamıştıır.

Ethical Statement

The eggs used in this study were obtained from a commercial broiler breeding company, with all measurements taken from the eggs. The research only included non-invasive procedures.

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Details

Primary Language

English

Subjects

Poultry Farming and Treatment

Journal Section

Research Article

Authors

Elif Babacanoğlu Çakır ^*
0000-0002-6329-315X
Türkiye

Early Pub Date

March 24, 2026

Publication Date

March 24, 2026

Submission Date

February 6, 2026

Acceptance Date

March 24, 2026

Published in Issue

Year 2026 Number: Advanced Online Publication

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1883524

IZ

https://izlik.org/JA85BE85SN

Cite

RIS / Bibtex

APA

Babacanoğlu Çakır, E. (2026). The Influences of Maternal Hormones on The Quality Characteristics of Incubating Eggs. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, Advanced Online Publication, 1089-1097. https://doi.org/10.18016/ksutarimdoga.vi.1883524