Table 6.
Composite colostrum samples 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 | – | −0.42 (P = 0.20) | −0.24 (P = 0.48) | 0.41 (P = 0.21) | −0.34 (P = 0.30) | −0.19 (P = 0.57) | 0.09 (P = 0.80) | −0.29 (P = 0.39) | −0.17 (P = 0.61) | Multiparous cows |
| IgG concentration, mg/mL | 0.01 (P = 0.95) | – | 0.48 (P = 0.13) | 0.61 (P < 0.05) | 0.19 (P = 0.57) | 0.30 (P = 0.37) | -0.68 (P < 0.05) | 0.76 (P < 0.01) | −0.01 (P = 0.99) | |
| Brix, % | 0.32 (P = 0.21) | 0.18 (P = 0.48) | – | 0.17 (P = 0.62) | −0.09 (P = 0.80) | 0.95 (P < 0.0001) | −0.25 (P = 0.46) | 0.26 (P = 0.45) | 0.45 (P = 0.16) | |
| SG | −0.03 (P = 0.90) | −0.05 (P = 0.84) | 0.42 (P = 0.09) | – | −0.07 (P = 0.83) | 0.26 (P = 0.45) | 0.72 (P < 0.05) | -0.74 (P < 0.01) | 0.56 (P = 0.08) | |
| Fat, % | 0.20 (P = 0.50) | −0.30 (P = 0.29) | −0.01 (P = 0.97) | −0.36 (P = 0.20) | – | −0.27 (P = 0.43) | 0.39 (P = 0.23) | −0.16 (P = 0.64) | 0.28 (P = 0.40) | |
| Protein, % | 0.35 (P = 0.21) | 0.43 (P = 0.13) | 0.82 (P < 0.0001) | 0.35 (P = 0.22) | −0.36 (P = 0.20) | – | −0.17 (P = 0.61) | 0.13 (P = 0.76) | 0.32 (P = 0.34) | |
| L* | −0.23 (P = 0.37) | −0.24 (P = 0.35) | -0.72 (P < 0.01) | −0.24 (P = 0.35) | 0.39 (P = 0.16) | -0.68 (P < 0.01) | – | -0.93 (P < 0.0001) | 0.44 (P = 0.17) | |
| a* | 0.14 (P = 0.59) | −0.23 (P = 0.38) | 0.35 (P = 0.17) | −0.11 (P = 0.67) | 0.52 (P = 0.05) | 0.12 (P = 0.67) | −0.39 (P = 0.12) | – | −0.22 (P = 0.51) | |
| b* | 0.34 (P = 0.19) | −0.05 (P = 0.85) | 0.60 (P < 0.05) | −0.04 (P = 0.88) | 0.30 (P = 0.30) | 0.46 (P = 0.10) | -0.65 (P < 0.01) | 0.88 (P < 0.0001) | – | |
| Primiparous cows | ||||||||||