The Effect of Parity, Lactation Period, and Milk Yield on Metabolic Profile Parameters in Holstein Dairy Cows

Yıl 2025, Cilt: 36 Sayı: 2, 107 - 114, 13.01.2026

Cennet Nur Ünal , Hakan Keçeci , Murat Uztimür

https://doi.org/10.35864/evmd.1752756

Öz

Metabolic profile analyses are widely used to determine and standardize the nutritional and disease status of animals. Metabolic profile parameters do not have the same reference ranges in every case. In this study, it is aimed to evaluate the effect of parity and lactation period on metabolic parameters in Holstein dairy cows. In the study, a total of 60 dairy cows in the transition period (the last three weeks of pregnancy and the first three weeks of lactation) were used. Dairy cows were grouped according to their parity (1 (n:20), 2 (n:20), and 3 or more (n:20)), lactation period (early period: 0-60 days (n:20), mid period: 60-120 (n:20), late period: >120 (n:20)), and 305-day average milk yield (<35 L: low yield (n:20), >35 L: high yield (n:20)). Significant changes were detected in the levels of non-esterified fatty acid (NEFA) and β-hydroxybutyric acid (BHBA), which indicate energy status, alanin aminotransferaz (ALT), aspartat aminotransferaz (AST), gama glutamil transferaz (GGT), and cholesterol, which indicate liver damage, and albumin levels among plasma proteins. It was concluded that considering these factors while evaluating the metabolic profile parameters in dairy cattle could be beneficial for better understanding the animals' condition and accurately interpreting the analyses.

Anahtar Kelimeler

Dairy cattle , metabolic profile , parity , lactation period , milk yield

Holştayn Sütçü Sığırlarda Parite, Laktasyon Dönemi ve Süt Verimi Metabolik Profil Parametreleri Üzerine Etkisi

Öz

Metabolik profil analizleri hayvanların beslenme ve hastalık durumunun belirlenmesi ve standardize edilmesi için yaygın kullanılmaktadır. Metabolik profil parametreleri her durumda aynı referans aralıklarına sahip değildir. Bu çalışmada Holştayn ırkı sütçü sığırlarda parite ve laktasyon döneminin metabolik parametreler üzerindeki etkisinin değerlendirilmesi amaçlanmaktadır. Çalışmada geçiş döneminde (gebeliğinin son üç haftası ve laktasyonunun ilk üç haftası) bulunan toplam 60 adet süt ineği kullanıldı. Sütçü sığırlar kendi içerisinde paritesine (1 (n:20), 2 (n:20) ve 3 veya daha fazla (n:20)), laktasyon dönemine (erken dönem: 0-60 gün (n:20), orta dönem: 60-120 (n:20), geç dönem: >120 (n:20)) ve 305 günlük ortalama süt verimine (<35 L: düşük verim (n:20), >35 L: yüksek verim (n:20)) göre gruplandırıldı. Enerji durumunu gösteren belirteçlerden esterleşmemiş yağ asidi (NEFA) ve β-hidroksibutirik asit (BHBA), karaciğer hasarını gösteren belirteçlerden alanin aminotransferaz (ALT), aspartat aminotransferaz (AST), gama glutamil transferaz (GGT) ve kolesterolün, plazma proteinlerinden ise albümin seviyesinde önemli değişiklikler tespit edildi. Sütçü sığırlarda metabolik profil parametreleri değerlendirilirken söz konusu faktörlerin dikkate alınmasının hayvanların durumunun daha iyi anlaşılması ve analizlerin doğru yorumlanması açısından faydalı olabileceği kanaatine varıldı.

Anahtar Kelimeler

Süt sığırı , metabolik profil , parite , laktasyon dönemi , süt verimi

Kaynakça

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