Anadolu Mandası Malaklarında Büyüme ve Prolactin Hormon Düzeylerinin Canlı Ağırlıkla İlişkileri

Öz

Bu çalışma, büyüme dönemindeki Anadolu mandası malaklarında canlı ağırlık ile büyüme hormonu (GH) ve prolaktin (PRL) arasındaki ilişkilerin yanı sıra, sürü ve cinsiyet faktörlerinin bu özellikler üzerindeki etkilerini incelemek amacıyla yürütülmüştür. Araştırmada, 12 malağın kan örneklerinden elde edilen plazma kullanılmış olup, örneklerinin alındığı sırada hayvanların ortalama yaşı 345 gün olmuştur. Elde edilen veriler üzerinde en küçük kareler analizi uygulanmış ve özellikler arasındaki ilişkileri değerlendirmek amacıyla Pearson korelasyon katsayıları hesaplanmıştır. Analiz sonuçları, işletme faktörünün GH düzeyleri üzerinde anlamlı bir etkiye sahip olduğunu (p < 0,05), ancak canlı ağırlık ve PRL düzeyinin anlamlı şekilde etkilenmediğini göstermiştir. Cinsiyetin canlı ağırlık üzerindeki etkisi istatistiksel olarak önemli (p < 0,05) bulunmuş olmakla birlikte, GH ve PRL düzeyleri bu faktörden etkilenmemiştir. Korelasyon analizinde, canlı ağırlık ile hem GH (r = 0,176) hem de PRL (r = 0,140) arasında zayıf pozitif korelasyonlar saptanmıştır. Ayrıca GH ile PRL arasında orta düzeyde negatif bir korelasyon (r = –0,394) belirlenmiştir. Sonuç olarak, GH ve PRL düzeyleri ile bunların canlı ağırlıkla ilişkileri, bir yaş civarında bulunan malaklarda büyümenin düzenlenmesine dair önemli bilgiler sunmaktadır. GH ile prolaktin hormonlarının canlı ağırlıkla pozitif ilişkilere sahip olduğu ve daha fazla sayıda hayvan içeren çalışmaların gerekli olduğu önerilmektedir.

Anahtar Kelimeler

• Anadolu mandası
• Büyüme hormonu
• Canlı ağırlık
• Prolaktin

Relationships of Live Weight with Growth and Prolactin Hormones in Anatolian Buffalo Calves

Öz

This study was conducted to investigate the relationships between body weight, growth hormone (GH), and prolactin (PRL) in growing Anatolian buffalo calves, as well as the effects of herd and sex on these traits. Plasma samples from blood of 12 calves were used in this study. The mean age of the animals at the time of blood collection was 345 days. Least-squares analysis was performed, and Pearson correlation coefficients were estimated to evaluate associations among traits. The results showed that herd had a significant effect on GH levels (p < 0.05), while body weight and PRL levels were not significantly affected. Sex effect on body weight was found to be significant (p < 0.05), whereas GH and PRL levels were not affected by this factor. Correlation analysis revealed weak positive associations of body weight with both GH (r = 0.176) and PRL (r = 0.140). A moderate negative correlation was detected between GH and PRL (r = -0.394). In conclusion, GH and PRL levels, together with their relationships with body weight, provide valuable insights into growth regulation in buffalo calves. This study suggested that the GH prolactin hormones have positive relationships with live weight and research involving larger number of animals are necessary.

Anahtar Kelimeler

• Anatolian buffalo
• Growth hormone
• Live weight
• Prolactin

Kaynakça

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