Table 2.
Milk composition and somatic cell count in control dairy cows or cows receiving 200 g/d of Aloe arborescens Mill. homogenate extract as a drench between −14 and 14 days from calving.
| Item, Unit | TRT 1 | Days From Calving | SEM 2 | p-Value | |||||
|---|---|---|---|---|---|---|---|---|---|
| 7 | 14 | 21 | 28 | TRT 1 | Time | TRT × Time 3 | |||
| Butterfat | CTR | 5.09 | 4.24 | 3.81 | 3.87 | 0.34 | 0.03 | 0.01 | 0.01 |
| mg/100 mL | AAM | 3.80 | 4.00 | 3.77 | 3.80 | ||||
| ** | |||||||||
| Fat output | CTR | 166.0 | 159.4 | 154.4 | 175.1 | 11.7 | 0.33 | 0.02 | 0.03 |
| g | AAM | 133.7 | 157.9 | 160.2 | 168.1 | ||||
| ** | |||||||||
| Total protein | CTR | 3.91 | 3.44 | 3.27 | 3.20 | 0.10 | 0.22 | <0.01 | 0.94 |
| mg/100 mL | AAM | 3.99 | 3.55 | 3.38 | 3.26 | ||||
| Protein output | CTR | 129.2 | 130.7 | 132.0 | 144.7 | 21.17 | 0.25 | 0.14 | 0.22 |
| g | AAM | 141.1 | 139.9 | 143.8 | 144.4 | ||||
| Fat/protein ratio | CTR | 1.32 | 1.24 | 1.17 | 1.21 | 0.06 | <0.01 | 0.19 | <0.01 |
| - | AAM | 0.95 | 1.13 | 1.12 | 1.17 | ||||
| ** | |||||||||
| Lactose | CTR | 4.69 | 4.72 | 5.00 | 4.99 | 0.20 | 0.61 | 0.01 | 0.34 |
| mg/100 mL | AAM | 4.81 | 4.99 | 5.07 | 4.76 | ||||
| Caseins | CTR | 2.74 | 2.52 | 2.40 | 2.37 | 0.12 | 0.02 | <0.01 | 0.76 |
| mg/100 mL | AAM | 2.96 | 2.65 | 2.53 | 2.45 | ||||
| Titratable acidity | CTR | 4.23 | 3.53 | 3.34 | 3.24 | 0.24 | 0.68 | <0.01 | 0.49 |
| °SH/50 mL | AAM | 4.09 | 3.64 | 3.52 | 3.44 | ||||
| Urea-N | CTR | 22.0 | 23.0 | 20.5 | 21.1 | 2.60 | 0.88 | 0.45 | 0.47 |
| mg/dL | AAM | 22.5 | 20.5 | 20.4 | 21.9 | ||||
| True protein 4 | CTR | 3.69 | 3.21 | 3.06 | 2.99 | 0.10 | 0.22 | <0.01 | 0.87 |
| mg/100 mL | AAM | 3.77 | 3.34 | 3.18 | 3.04 | ||||
| Somatic cells count | CTR | 3.38 | 3.47 | 3.27 | 3.99 | 1.15 | 0.02 | 0.75 | 0.78 |
| Linear score | AAM | 2.33 | 1.66 | 1.09 | 1.36 | ||||
1 Treatment (CTR is cows receiving placebo water; AAM is cows receiving a drench of Aloe arborescens Mill.). 2 Standard error = larger standard error for the fixed effects. 3 Treatment × time interaction (** is p < 0.01 for differences among means within a column. These symbols are only presented when the interaction effect is significant). 4 True protein = total protein-(urea-N/100).