Determination of Factors Affecting Mastitis in Holstein Friesian and Brown Swiss by Using Logistic Regression Analysis

Authors : Yasin ALTAY, Büşra KILIÇ, İbrahim AYTEKİN, İsmail KESKİN

Pages : 194-197

View : 42 | Download : 30

Publication Date : 2019-12-15

Article Type : Research Paper

Abstract :The aim of this study was to determine subclinical mastitis with the help of logistic regression of milk quality determined factors and some features the research material consisted of 204 insert ignore into journalissuearticles values(145 Holstein, 59 Brown Swiss); dairy cattle raised in a private cattle farm in Konya Province, Turkey. The independent variables considered for the detection of subclinical mastitis are breed, somatic cell number insert ignore into journalissuearticles values(SCC);, color values insert ignore into journalissuearticles values(L, a, b, H, C);, freezing point insert ignore into journalissuearticles values(FP);, pH, electrical conductivity insert ignore into journalissuearticles values(EC);, milking day insert ignore into journalissuearticles values(MD);, lactation order insert ignore into journalissuearticles values(LO);. The dependent variable of logistic regression was CMT score. According to the results of the study, the spescifity was 95.7% and the sensitivity was 57.6%. In general, the predicted value of the accuracy of all data was 83.3%.
Keywords : Brown, Swiss, Holstein, Logistic Regression Milk Yield, Subclinical Mastitis

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