Sığır sırt yağ kalınlığının transrektal ultrasonografik muayene yöntemi ile belirlenmesi

Öz

Sunulan çalışmanın amacı, süt sığırlarında sırt yağ kalınlığını inspeksiyon ve palpasyonla ( gözle ve elle) subjektif olarak ölçülen Vücut Kondisyon Skorunu (VKS), doğum sonrası transrektal ultrasonografik muayene yöntemi ile objektif olarak belirlemektir. İşletmedeki 350 adet süt sığırı içerisinden rastgele seçilen ortalama 650 kg canlı ağırlıkta, 2 - 6.laktasyonda 44 adet inek kullanılmıştır. İnekler BCS göre; 1. grup (BCS ≤ 3) 22 inek (Pelvis bölgesine yandan bakıldığında BCS’nin 3 veya 3 ‘ ün altında olduğunda “V” şeklinin görülmesi) ve 2. grup (BCS ˃ 3) 22 inek (Pelvis bölgesine yandan bakıldığında BCS’ nin 3’ ün üstünde olduğunda “U” şeklinin görülmesi) olmak üzere inekler iki gruba ayrılmıştır. Derinin üstünden ultrasonografik görüntü elde edilerek deri altı yağ kalınlığı (Subcutaneous fat thickness) belirlenebilmekte, vücut yağ oranı ile ilgili bilgiler elde edilmektedir. Bu çalışmada ilk kez transrektal ultrason muayene yöntemi ile ultrasonografik görüntü elde edilmiş, sırt yağ kalınlığı tespit edilmiş ve literatüre sunulmuştur. Transrektal ultrason muayenesinde; avuç içine alınan prob, rektumdan içeriye sokularak, rektumun boşaltılması sağlanmış, daha sonra cavum pelvis içinde ilerletilerek son bel omurları, sakrum ve tuber coxa’ların üst kısımları arasında kalan sakral bölge prob ile dikey (vertically) taranarak, kas ile deri tabakası arasındaki yağ dokusu tespit edilmiştir. Muayene sonucu elde edilen görüntüler (corresponding images) ultrasonografi cihazına kaydedilmiş ve bilgisayar ortamına aktarılarak değerlendirilmiştir. Araştırma sonucunda transrektal ultrasonografi muayene yöntemine göre BCS ≤ 3 ve BCS ˃ 3 gruplarının yağ kalınlıkları tespit edilmiş ve gruplar arasında gözlenen farklılık önemli bulunmuştur (p<0,05). 

Anahtar Kelimeler

• Vücut Kondisyon Skoru ( VKS),Ultrason,Geçiş Dönemi

Determination of backfat thickness with transrectal ultrasonography in cattle

Abstract

The purpose of this study is to determine the Body Condition Score (BCS), which is subjectively measured in dairy cattle with inspection and palpation of backfat thickness, objectively by using transrectal ultrasonography examination method after delivery. Forty-four cows, randomly selected, average 650 kg live weight, 2 - 6 lactation from 350 dairy cattle have been used. Cows have been separated into two groups according to BCS; which are: group 1 (n = 22) (BCS ≤ 3) and group 2 (n=22) (BCS ˃ 3). In previous studies, subcutaneous fat thickness has been determined by examining body thickness using ultrasonographic imaging above the skin. In the transrectal ultrasound examination; A hand-held probe was inserted from the rectum after rectum is cleared, it was pushed forward inside the cavum pelvis, and measurements were performed on the fat tissue between the muscle and skin layers by scanning vertically using the probe on the sacral region between the upper parts of last lumbar vertebrae, sacrum and tuber coxae. Corresponding images resulting from the examination were saved on the ultrasonography device and evaluated after being transferred in software. In the result of this study, backfat thickness of BCS ≤ 3 and BCS ˃ 3 groups were determined according to ultrasonography examination, and a difference was observed between groups (p < 0.05).  305- day milk yield between the groups and TMR analysis have been determined in this study and no difference has been determined between groups (p ˃ 0,05)

Keywords

• Body Condition Score (BCS),Ultrasound,Transition Period

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