Changes in the concentration of urea in whey related to udder health status of goat

Abstract

A total of 60 samples of goat milk from udder halves were analysed. Based on the score of California Mastitis Test (CMT), the samples were equally grouped into Normal, Subclinical 1+, Subclinical 2+, Subclinical 3+ and Clinical. The average of urea concentration in whey was highest (33.96 ± 0.96 mg/dl) in the normal group, followed by Subclinical 1+ (24.25 ± 0.97 mg/dl), Subclinical 2+ (14.55 ± 0.61 mg/dl), Subclinical 3+ (12.96 ± 0.46 mg/dl) and lowest (9.42 ± 0.33 mg/dl) in the Clinical group. The results showed significant decrease in urea concentration with an increase in the severity of mastitis. The urea concentration of normal group, subclinical combined group and clinical group ranged from 32.00 to 39 mg/dl, 10.50 to 30.00 mg/dl and 9.50 to 12.50 mg/dl respectively.