Table 3.
Milk composition and lactation yield of ewes fed the experimental treatments in two sampling periods
| Item | Period 1 (week 5) | SEM | Period 2 (week 9) | SEM | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| P1 | P2 | P3 | P4 | P1 | P2 | P3 | P4 | |||
| Yield | ||||||||||
| Milk (kg/day) | 1.08 | 1.02 | 1.20 | 1.18 | 0.09 | 1.09b | 1.03b | 1.16ab | 1.37a | 0.09 |
| Milk (6% FCM) | 0.96 | 0.93 | 1.12 | 1.77 | 0.09 | 0.98b | 0.94b | 1.07b | 1.35a | 0.08 |
| Milk components (%) | ||||||||||
| Fat | 4.82c | 5.08bc | 5.28b | 5.94a | 0.09 | 4.88c | 5.02c | 5.18b | 5.82a | 0.05 |
| Protein | 4.20 | 3.60 | 3.85 | 3.92 | 0.21 | 3.64 | 3.15 | 3.70 | 4.07 | 0.25 |
| Lactose | 4.83 | 5.05 | 4.69 | 4.64 | 0.28 | 5.06 | 4.84 | 4.90 | 4.78 | 0.17 |
| Total solids | 14.37 | 13.69 | 13.86 | 14.35 | 0.48 | 13.70 | 12.79 | 14.10 | 13.91 | 0.34 |
a, b, cValues containing different letters in each row are significantly different (P < 0.05)
P1 = control without phosalone and sodium bentonite (SB); P2 = phosalone was given at a dose of 280 mg/day/ewe; P3 = phosalone (280 mg/ewe/day) and SB (32 g/ewe/day) fed for 63 consecutive days; Treatment P4 = feeding SB with concentration of 32 g/ewe/day
6% FCM was calculated by this formula = M (0.453 + 0.0912f) [60], that M is the yield of milk (kg), and f is fat percentage of milk