Table 7.
Effect of the stage of lactation (early lactation, EL, 2–4 weeks in milking; medium lactation, ML, 5–10 weeks in milking; and late lactation, LL, 11–30 weeks) on the plasma oxidative profile of Saanen breed, Mediterranean medium production level breeds (MPLB: Maltese and Jonica breeds), and low production level breeds (LPLB: Rossa Mediterranea, Girgentana, and Garganica breeds).
| Saanen | MPLB | LPLB | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EL | ML | LL | MSE | EL | ML | LL | MSE | EL | ML | LL | MSE | |
| TBARS, nmol/mL | 0.73 a | 0.72 a | 0.98 b | 0.03 | 0.71 a | 0.69 a | 1.03 b | 0.02 | 0.77 a | 0.64 b | 1.07 c | 0.03 |
| HYDROP, µmol/mL | 6.37 | 5.85 a | 6.51 b | 0.17 | 6.17 a | 5.95 a | 6.59 b | 0.12 | 6.07 a | 5.62 a | 6.55 b | 0.14 |
| PC µmol/mL | 111.26 | 109.64 | 107.61 | 2.78 | 108.92 | 105.74 | 108.21 | 1.34 | 113.04 a | 111.20 a | 106.19 b | 1.44 |
| FRAP, nmol/L | 60.08 | 61.87 | 63.53 | 2.98 | 65.95 a | 65.48 a | 50.59 b | 1.39 | 69.23 | 66.86 | 65.91 | 1.89 |
| SOD, IU/mL | 116.95 a | 105.94 b | 102.05 b | 7.78 | 115.77 a | 104.02 b | 106.42 b | 1.74 | 118.78 a | 102.37 b | 101.42 b | 2.13 |
MSE = mean standard error; TBARS = thiobarbituric acid reactive substances; HYDROP = lipid hydroperoxides; PC = protein carbonyls; FRAP = ferric reducing ability of plasma; SOD = superoxide dismutase. a, b, c Different letters in the same line for each breed cluster indicate a significant difference (p < 0.05) between means.