Siyah Alaca ineklerde meme ve meme başı formu ile laktasyon sırası ve laktasyon döneminin subklinik mastitis üzerine etkisi
Küçük Resim Yok
Tarih
2003
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
izmir İli Holstein Damızlık Süt Sığırı Yetiştirici Birliği üyesi işletmelerde yetiştirilen ineklerde meme ve meme başı formu, laktasyon sırası ve laktasyon dönemi ile subklinik mastitis arasındaki ilişkiler incelenmiştir. Çalışmada, 21 işletmedeki 887 ineğe ait veriler kullanılmıştır. Meme ve meme başı formu puanlama yapılarak değerlendirilmiştir. Subklinik mastitis tanısı, sütün elektriksel iletkenliğini ölçen bir el cihazıyla yapılmıştır, ineklerin % 55,9'unun koltuk, % 25,9'unun küresel, % 11,5'inin kademeli, % 6,7'sinin ise sarkık memeli olduğu saptanmıştır. Meme başlan, ineklerin % 73,3'ünde silindirik, % 18,8'inde huni, % 3,2'sinde armut şekilli, % 4,7'sinde ise uzun-kalın formdadır, ineklerin % 54, 1'inde meme başı yerleşiminin kare şeklinde, % 45,9'unda ise arka meme başlarının önlere göre birbirine daha yakın olduğu saptanmıştır. Çoklu lojistik regresyon analizi sonuçlarına göre meme formu, meme başı formu, laktasyon sırası ve işletmenin subklinik mastitise yakalanma olasılığını önemli düzeyde etkilediği bulunmuştur (P < 0,001). Meme başı yerleşimi ve laktasyon döneminin etkisi ise önemsiz bulunmuştur. Subklinik mastitise yakalanma riskinin, koltuk memeli ineklerde en düşük, sarkık memeli ineklerde ise en yüksek olduğu saptanmıştır. Meme başı formu dikkate alındığında, subklinik mastitis riski, meme başı uzun-kalın formda olan ineklerde en yüksek bulunmuştur. Huni şekilli meme başı olan ineklerde subklinik mastitis olasılığı, meme başı silindirik şekilli olan ineklere göre daha düşük bulunmuştur. Subklinik mastitise yakalanma riskinin laktasyon sırası arttıkça yükseldiği saptanmıştır.
The relationships of udder and teat morphology, parity, and lactation stage with subclinical mastitis were investigated in cows raised in herds registered with the Izmir Holstein Breeders Association. Data from 887 cows in 21 herds were used. The udder and teat morphology of the cows was scored. Detection of subclinical mastitis was performed by a hand-held device measuring the electrical conductivity of the milk. It was found that 55.9% of cows had trough-shaped udders, 25.9% had ball-shaped udders, 11.5% had rear-heavy udders, and 6.7% had pendulous udders. Teats were cylindrical in 73.3%, funnel-shaped in 18.8%, pear-shaped in 3.2%, and long and thick in 4.7% of cows. Teats were located squarely in 54.1% of cows, and rear teats were closer to each other compared with the front teats in 45.9%. In multivariate logistic regression analysis, udder and teat morphology, parity, and herd were found to affect significantly (P < 0.001) the probability of subclinical mastitis. The effects of teat placement and stage of lactation were not significant. Cows with trough-shaped udders had the lowest risk of subclinical mastitis, and cows with pendulous udders had the highest risk. When teat morphology was considered, the risk of subclinical mastitis was highest for cows with long and thick teats. The risk of subclinical mastitis for cows with funnel-shaped teats was found to be lower than for cows with cylindrical teats. The risk of subclinical mastitis was found to increase as parity rose.
The relationships of udder and teat morphology, parity, and lactation stage with subclinical mastitis were investigated in cows raised in herds registered with the Izmir Holstein Breeders Association. Data from 887 cows in 21 herds were used. The udder and teat morphology of the cows was scored. Detection of subclinical mastitis was performed by a hand-held device measuring the electrical conductivity of the milk. It was found that 55.9% of cows had trough-shaped udders, 25.9% had ball-shaped udders, 11.5% had rear-heavy udders, and 6.7% had pendulous udders. Teats were cylindrical in 73.3%, funnel-shaped in 18.8%, pear-shaped in 3.2%, and long and thick in 4.7% of cows. Teats were located squarely in 54.1% of cows, and rear teats were closer to each other compared with the front teats in 45.9%. In multivariate logistic regression analysis, udder and teat morphology, parity, and herd were found to affect significantly (P < 0.001) the probability of subclinical mastitis. The effects of teat placement and stage of lactation were not significant. Cows with trough-shaped udders had the lowest risk of subclinical mastitis, and cows with pendulous udders had the highest risk. When teat morphology was considered, the risk of subclinical mastitis was highest for cows with long and thick teats. The risk of subclinical mastitis for cows with funnel-shaped teats was found to be lower than for cows with cylindrical teats. The risk of subclinical mastitis was found to increase as parity rose.
Açıklama
Anahtar Kelimeler
Ziraat, Sütçülük ve Hayvan Bilimleri
Kaynak
Turkish Journal of Veterinary and Animal Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
27
Sayı
3
