Abstract:In order to improve the practical approach to clinical diagnosis of subclinical mastitis, 72 dairy cattle from KPSBU Lembang Bandung Regency was used in this research. The purpose of this research was to study the correlation between udder length and lactation period with the profile of subclinical mastitis. Lactation period data was collected from interviews with farmers. Subclinical mastitis testing by IPB-1 Mastitis Test reagent and udder length measured using measuring tape (cm). Data was analyzed using Duncan test and logistic regression. The highest correlation of subclinical mastitis occurred to dairy cattle with average udder length of 7.5 cm and was in the third and forth lactation period. This result shows that udder length and lactation period of dairy cattle is a predisposing factor for subclinical mastitis. This finding is important to improve the milking management as well as a way to diagnose subclinical mastitis.

Dairy cattle must be in good health condition as a producer of milk. This study was aimed to assess the influence of hand milking at difference lactation towards teat end condition and hyperkeratosis on dairy cattle in Kunak Bogor and Pasir Jambu Bandung. Object used in the study are clinical healthy dairy cattle in normal lactation and that were selected using the purposive sampling method. As many as 31 from Kunak Bogor and 56 from Pasir Jambu Bandung. Research method was conducted by observation to score teat end condition using Mein and Ohnstad method and the possibility of the occurrence of pathological changes, hyperkeratosis on teat. The analysis was done by descriptive approach and using Chi-Square test. The result showed that the change of teat surface condition and hyperkeratosis was influenced by lactation period. Hopefully, the result of this study could be used by farmer in order to improve milking management and prevent diseases caused by the poor condition of teat.