A Study of Milk Composition and Coagulation Properties of Holstein-Friesian, Jersey, and Their Cross Milked Once or Twice a Day

The objective of the study was to explore effect breed on composition and coagulation properties (rennet time (min), curd firming rate firmness (mm)) milk from cows milked once a day or twice in morning afternoon, using Formagraph. Thirty (11 Holstein-Friesian, 8 Holstein-Friesian × Jersey cross, 11 Jersey) once-a-day milking herd thirty (16 10 4 twice-a-day were sampled late lactation. analysed for each sample. had better at frequency-milking compared cows. Curd 30 min after addition rennet positively (p < 0.05) correlated with protein concentration. However, correlations inconsistent between frequencies times, resulting poor prediction changes cheese-making potential. This indicated that affected by frequency. could be due variation milk, but firm recommendations hampered low number samples. Further research larger cow numbers is justified.