A research on milk production and milk quality traits of red holstein

In this study, lactation length, lactation milk yield, persistency, milk quality traits and the factors affecting these traits of Red Holstein reared at a private dairy cattle farm located in Davutlar town of Aydın Province were investigated. The averages of lactation length (LL), lactation milk yield (LMY) and 305-d milk yield (305-dMY) were 353.00±3.733 d, 8,484.49±109.280 kg, 7,652.83±80.677 kg, respectively. The persistency averages for P2:1, P3:1, P3:2 and PTomax were 86.9±0.768%, 62.10±1.117%, 70.70±1.013% and 5.10±0.050, respectively. On the other hand, the averages of protein, lactose, non-fat dry matter and Log10 somatic cell count were 3.20±0.020%, 4.73±0.024%, 8.94±0.036% and 4.8045±0.06946 (63,753) cells/ml, respectively. Additionally, heritabilities of milk traits for LL, LMY, 305-dMY, P2:1, P3:1, P3:2 and PTomax were estimated to be 0.141±0.083, 0.466±0.068, 0.440±0.063, 0.187±0.067, 0.311±0.071, 0.275±0.070 and 0.227±0.065, respectively. In this research, it was concluded that Red Holstein cows reared at this farm had higher milk yield and better udder health status than Holstein-Friesian cows reared in the same region