Publication: Süt Sığırlarında Kuruya Çıkarma Öncesinde Tek Doz Kabergolin Uygulamasının Meme İnvolüsyonu ve Kuru Dönem Mastitisleri Üzerine Etkisi
Abstract
Bu çalışmanın amacı, kuru dönem başlangıcında tek doz kabergolin uygulamasının ineklerde kuru dönemde meme involüsyonunun klinik sürecine ve kuru dönemden köken alan mastitis olgularına karşı etkinliğinin araştırılmasıdır. Bu çalışmada, kuruya çıkarılması planlanan, son sağım öncesi tüm meme loblarının CMT skoru 0 olan, laktasyon döneminin son 3 ayında mastitis öyküsü olmayan, kuruya çıkarma anında süt verimi >17 litre/gün olan, 65 Holstein Friesian inek iki gruba ayrıldı. Gruplar kabergolin (GKab) ve kontrol (GKon) olarak ayrıldı. GKab'daki ineklere (n=33), 5,6 mg/5 ml k.i. tek doz kabergolin (Velactis®, Ceva Santé Animale, France) enjeksiyonu, GKon'daki ineklere (n=32) ise 5 ml k.i. tek doz %0,9 NaCl enjeksiyonu yapıldı. Elde edilen verilere göre GKab ve GKon'da sırasıyla serum PRL düzeyleri 1. günde 62,6±125,1 ng/ml ve 98,2±153,1 ng/ml (p<0,045) olarak bulundu. GKab ve GKon'da sırasıyla süt sızıntısı oranı kuru dönemin 1. gününde %3,0 (1/33) ve %46,9 (15/32) (p<0,001), kuru dönemin 2. gününde %18,2 (6/33) ve %56,3 (18/32) (p=0,002) olarak bulundu. Meme ölçüm sonuçları GKab ve GKon'da sırasıyla 0. günde 7,69±1,45 cm ve 6,55±1,35 cm (p=0,002), 1. günde 6,90±2,01cm ve 8,29±1,56 cm (p=0,001), 2. günde 7,37±1,79 cm ve 8,84±1,86 cm (p=0,002) olarak bulundu. Postpartum mastitis oranı GKab ve GKon'da sırasıyla %3,0 (1/33) ve %21,9 (7/32) (p=0,008) olarak bulundu. Doktora tez çalışması sonucunda elde edilen veriler değerlendirildiğinde tek doz kabergolin uygulaması; ineklerde herhangi bir yan etkiye neden olmadı; süt sızıntı insidensini önemli ölçüde azalttı; meme involüsyonunu klinik olarak hızlandırdı ve kuru dönemden köken alan mastitis olgularının önlenmesinde iyi bir yönetim stratejisi olabileceğini gösterdi. Anahtar Sözcükler: Kabergolin, Kuruya çıkarma, Kuru dönem, Mastitis, Meme involüsyonu, Süt sızıntısı.
The aim of this study is to determine the effects of single-dose cabergoline administration on udder involution and mastitis infections during the dry period. Two study groups were formed from 65 Holstein Friesian cows that were within the last three months of their lactation period with no history of mastitis, had a CMT score of 0 in each mammary lobe, with a milk output of >17 liters/day at the start of the dry period. Groups were named as cabergoline (GKab) and control (GKon). The GKab group (n=33) received a single i.m. injection of 5,6 mg/5 ml cabergoline (Velactis®, Ceva Santé Animale, France), while the cows in the GKon group (n=32) received a single im injection of saline (5 ml). The serum PRL levels in GKab and GKon groups were 62.6±125.1 ng/ml and 98.2±153.1 ng/ml (p<0.045) at the first day, respectively. Milk leakage was recorded in GKab and GKon as 3.0% (1/33) and 46.9% (15/32) (p<0.001) at the 1st day of the dry period; 18.2% (6/33) and 56.3% (18/32) (p=0.002) at the 2nd day of the dry period respectively. Mammary measurements were 7.69±1.45 cm and 6.55±1.35 cm (p=0.002) at the 0th day, 6.90±2.01 cm and 8.29±1.56 cm (p=0.001) at the 1st day, 7.37±1.79 cm and 8.84±1.86 cm (p=0.002) at the 2nd day for the GKab abd GKon groups respectively. The postpartum mastitis ratios were 3.0% (1/33) and 21.9% (7/32) in the GKab and GKon groups, respectively. When the data obtained as a result of the doctoral thesis study were evaluated, single-dose cabergoline application; did not cause any side effects in cows; significantly reduced the incidence of milk leakage; It clinically accelerated mammary involution and showed that it could be a good management strategy in preventing mastitis cases originating from the dry period. Keywords: Cabergoline, Drying-off, Dry period, Mastitis, Mammary involution, Milk leakage.
The aim of this study is to determine the effects of single-dose cabergoline administration on udder involution and mastitis infections during the dry period. Two study groups were formed from 65 Holstein Friesian cows that were within the last three months of their lactation period with no history of mastitis, had a CMT score of 0 in each mammary lobe, with a milk output of >17 liters/day at the start of the dry period. Groups were named as cabergoline (GKab) and control (GKon). The GKab group (n=33) received a single i.m. injection of 5,6 mg/5 ml cabergoline (Velactis®, Ceva Santé Animale, France), while the cows in the GKon group (n=32) received a single im injection of saline (5 ml). The serum PRL levels in GKab and GKon groups were 62.6±125.1 ng/ml and 98.2±153.1 ng/ml (p<0.045) at the first day, respectively. Milk leakage was recorded in GKab and GKon as 3.0% (1/33) and 46.9% (15/32) (p<0.001) at the 1st day of the dry period; 18.2% (6/33) and 56.3% (18/32) (p=0.002) at the 2nd day of the dry period respectively. Mammary measurements were 7.69±1.45 cm and 6.55±1.35 cm (p=0.002) at the 0th day, 6.90±2.01 cm and 8.29±1.56 cm (p=0.001) at the 1st day, 7.37±1.79 cm and 8.84±1.86 cm (p=0.002) at the 2nd day for the GKab abd GKon groups respectively. The postpartum mastitis ratios were 3.0% (1/33) and 21.9% (7/32) in the GKab and GKon groups, respectively. When the data obtained as a result of the doctoral thesis study were evaluated, single-dose cabergoline application; did not cause any side effects in cows; significantly reduced the incidence of milk leakage; It clinically accelerated mammary involution and showed that it could be a good management strategy in preventing mastitis cases originating from the dry period. Keywords: Cabergoline, Drying-off, Dry period, Mastitis, Mammary involution, Milk leakage.
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