Table 5.
Effect of olive cake supplement on milk yield and composition (mean values ± SD).
| Items | Yield (kg/day) | Fat (%) | Lactose (%) | Protein (%) | Casein (%) | Urea (mg/dL) | SCC § log10/mL | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTR | OC | CTR | OC | CTR | OC | CTR | OC | CTR | OC | CTR | OC | CTR | OC | |
| May | 23.8 ± 1.8 | 23.9 ± 1.6 | 2.57 ± 0.1 | 2.97 ± 0.3 | 4.59 ± 0.1 | 4.67 ± 0.1 | 2.69 ± 0.2 | 2.76 ± 0.3 | 2.28 ± 0.1 | 2.32 ± 0.1 | 18.33 ± 2.1 | 18.70 ± 2.1 | 2.51 ± 0.1 | 2.55 ± 0.1 |
| June | 23.3 ± 1.6 | 24.3 ± 1.1 | 2.83 ± 0.2 | 3.00 ± 0.2 | 4.61 ± 0.3 | 4.59 ± 0.2 | 2.59 ± 0.2 | 2.60 ± 0.2 | 2.23 ± 0.2 | 2.27 ± 0.2 | 24.50 ± 2.1 | 28.39 ± 2.1 | 2.54 ± 0.1 | 2.59 ± 0.1 |
| July | 24.6 ± 1.5 | 25.3 ± 1.5 | 3.30 ± 0.3 | 3.14 ± 0.4 | 4.72 ± 0.2 | 4.66 ± 0.1 | 2.86 ± 0.3 | 2.89 ± 0.3 | 2.49 ± 0.2 | 2.41 ± 0.2 | 22.22 ± 2.2 | 22.58 ± 2.3 | 2.56 ± 0.1 | 2.51 ± 0.1 |
| August | 23.6 ± 2.1 | 23.8 ± 1.4 | 3.07 ± 0.3 | 3.15 ± 0.4 | 4.76 ± 0.3 | 4.61 ± 0.2 | 2.94 ± 0.4 | 2.91 ± 0.3 | 2.47 ± 0.1 | 2.41 ± 0.2 | 23.78 ± 2.1 | 24.14 ± 2.9 | 2.54 ± 0.1 | 2.49 ± 0.1 |
| September | 23.7 ± 1.8 a | 25.1 ± 1.5 b | 3.46 ± 0.3 | 3.63 ± 0.3 | 4.57 ± 0.3 | 4.49 ± 0.4 | 3.11 ± 0.2 | 3.07 ± 0.2 | 2.47 ± 0.2 | 2.45 ± 0.2 | 24.45 ± 2.2 | 24.60 ± 2.1 | 2.59 ± 0.1 | 2.58 ± 0.1 |
CTR group: milk produced by dairy cows fed concentrate without olive cake supplements. OC group: milk produced by dairy cows fed concentrate with olive cake supplements. § Somatic Cell Count. a, b significant different for p < 0.05.