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- W2181901796 abstract "bafllar›n›n onlere gore birbirine daha yak›n olduu saptanm›flt›r. Coklu lojistik regresyon analizi sonuclar›na gore meme formu, meme bafl› formu, laktasyon s›ras› ve iflletmenin subklinik mastitise yakalanma olas›l›¤›n› onemli duzeyde etkiledii bulunmufltur (P < 0,001). Meme bafl› yerleflimi ve laktasyon doneminin etkisi ise onemsiz bulunmufltur. Subklinik mastitise yakalanma riskinin, koltuk memeli ineklerde en dufluk, sark›k memeli ineklerde ise en yuksek olduu saptanm›flt›r. Meme bafl› formu dikkate al›nd›¤›nda, subklinik mastitis riski, meme bafl› uzun-kal›n formda olan ineklerde en yuksek bulunmufltur. Huni flekilli meme bafl› olan ineklerde subklinik mastitis olas›l›¤›, meme bafl› silindirik flekilli olan ineklere gore daha dufluk bulunmufltur. Subklinik mastitise yakalanma riskinin laktasyon s›ras› artt›kca yukseldii saptanm›flt›r. Abstract: 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." @default.
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- W2181901796 date "2003-07-11" @default.
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- W2181901796 title "Siyah Alaca ineklerde meme ve meme başı formu ile laktasyon sırası ve laktasyon döneminin subklinik mastitis üzerine etkisi" @default.
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