Table 2.
Front left quarter of primiparous and multiparous dairy cows: Pearson correlation coefficients between colostrum constituents and quality parameters (SG = specific gravity, color coordinates L*, a*, and b*). Significant correlation coefficients (P < 0.05) are highlighted in bold-type
| Milk yield, kg | IgG concentration, mg/mL | Brix, % | SG | Fat, % | Protein, % | L* | a* | b* | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Milk yield, kg | – | 0.15 (P = 0.65) | 0.05 (P = 0.88) | 0.61 (P < 0.05) | −0.12 (P = 0.73) | −0.01 (P = 0.97) | 0.05 (P = 0.88) | −0.30 (P = 0.36) | 0.02 (P = 0.96) | Multiparous cows |
| IgG concentration, mg/mL | −0.05 (P = 0.85) | – | 0.01 (P = 0.99) | 0.10 (P = 0.78) | -0.61 (P < 0.05) | −0.46 (P = 0.15) | −0.24 (P = 0.48) | 0.18 (P = 0.60) | −0.12 (P = 0.72) | |
| Brix, % | 0.63 (P < 0.01) | 0.39 (P = 0.12) | – | 0.46 (P = 0.16) | −0.02 (P = 0.96) | 0.25 (P = 0.46) | −0.17 (P = 0.62) | 0.09 (P = 0.79) | 0.33 (P = 0.32) | |
| SG | −0.24 (P = 0.36) | 0.20 (P = 0.44) | 0.05 (P = 0.84) | – | 0.30 (P = 0.36) | 0.45 (P = 0.16) | 0.32 (P = 0.33) | −0.59 (P = 0.05) | 0.30 (P = 0.37) | |
| Fat, % | 0.43 (P = 0.12) | −0.07 (P = 0.81) | 0.26 (P = 0.36) | −0.38 (P = 0.18) | – | 0.90 (P < 0.001) | 0.27 (P = 0.42) | −0.31 (P = 0.35) | 0.29 (P = 0.39) | |
| Protein, % | 0.75 (P < 0.01) | 0.50 (P = 0.07) | 0.98 (P < 0.0001) | −0.23 (P = 0.42) | 0.19 (P = 0.52) | – | 0.00 (P = 0.99) | −0.15 (P = 0.65) | 0.29 (P = 0.39) | |
| L* | −0.48 (P = 0.05) | −0.37 (P = 0.15) | -0.69 (P < 0.01) | 0.06 (P = 0.82) | 0.21 (P = 0.48) | -0.79 (P < 0.0001) | – | -0.91 (P < 0.0001) | 0.49 (P = 0.13) | |
| a* | −0.04 (P = 0.87) | −0.08 (P = 0.76) | 0.40 (P = 0.11) | 0.48 (P = 0.05) | 0.19 (P = 0.53) | 0.44 (P = 0.11) | −0.15 (P = 0.56) | – | −0.38 (P = 0.25) | |
| b* | 0.57 (P < 0.05) | 0.14 (P = 0.60) | 0.59 (P < 0.05) | −0.14 (P = 0.60) | 0.12 (P = 0.68) | 0.70 (P < 0.01) | -0.78 (P < 0.001) | −0.05 (P = 0.86) | – | |
| Primiparous cows | ||||||||||