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Table 6 Estimates of genetic (below diagonal) and phenotypic (above diagonal) correlations between milk yield on selected days in milk (DIM) for different milking frequency in the first and second lactations

From: Influence of milking frequency on genetic parameters associated with the milk production in the first and second lactations of Iranian Holstein dairy cows using random regression test day models

MFa Lactation and DIM DIM
  35 65 95 125 155 185 215 245 275 305
3X First
 35   - 0.34 0.29 0.27 0.23 0.19 0.17 0.18 0.19 0.10
 65   0.19 - 0.59 0.51 0.46 0.47 0.47 0.43 0.38 0.40
 95   0.14 0.87 - 0.62 0.57 0.55 0.52 0.50 0.46 0.41
 125   0.17 0.67 0.94 - 0.64 0.60 0.56 0.53 0.50 0.42
 155   0.07 0.74 0.95 0.97 - 0.66 0.62 0.56 0.51 0.49
 185   −0.09 0.86 0.94 0.87 0.95 - 0.70 0.63 0.55 0.59
 225   −0.18 0.89 0.94 0.81 0.88 0.97 - 0.69 0.63 0.63
 245   −0.14 0.76 0.92 0.82 0.80 0.83 0.91 - 0.73 0.62
 275   0.03 0.54 0.80 0.81 0.72 0.65 0.71 0.92 - 0.63
 305   0.02 0.76 0.72 0.64 0.75 0.84 0.80 0.63 0.53 -
3X Second
 35   - 0.51 0.43 0.38 0.35 0.33 0.31 0.29 0.27 0.22
 65   0.52 - 0.58 0.55 0.51 0.44 0.38 0.32 0.27 0.23
 95   0.29 0.96 - 0.65 0.61 0.55 0.46 0.39 0.32 0.26
 125   0.32 0.90 0.97 - 0.68 0.63 0.56 0.48 0.40 0.30
 155   0.45 0.73 0.79 0.92 - 0.70 0.66 0.59 0.50 0.36
 185   0.53 0.47 0.50 0.70 0.92 - 0.73 0.69 0.60 0.44
 225   0.54 0.27 0.28 0.50 0.80 0.97 - 0.75 0.69 0.52
 245   0.51 0.18 0.18 0.41 0.73 0.93 0.99 - 0.76 0.63
 275   0.43 0.20 0.23 0.44 0.73 0.91 0.96 0.98 - 0.75
 305   0.17 0.37 0.46 0.60 0.72 0.74 0.71 0.73 0.85 -
4X First
 35   - 0.26 0.19 0.24 0.25 0.20 0.14 0.14 0.17 0.04
 65   −0.71 - 0.67 0.55 0.49 0.51 0.50 0.45 0.33 0.37
 95   −0.57 0.90 - 0.68 0.62 0.61 0.58 0.54 0.45 0.43
 125   −0.18 0.67 0.90 - 0.71 0.68 0.61 0.58 0.52 0.45
 155   0.02 0.61 0.82 0.97 - 0.71 0.65 0.61 0.54 0.48
 185   −0.01 0.75 0.83 0.90 0.95 - 0.73 0.68 0.58 0.55
 225   −0.11 0.85 0.84 0.81 0.86 0.96 - 0.73 0.63 0.59
 245   −0.09 0.75 0.80 0.79 0.80 0.86 0.94 - 0.74 0.63
 275   0.00 0.47 0.68 0.79 0.76 0.72 0.75 0.91 - 0.67
 305   −0.41 0.67 0.74 0.72 0.73 0.77 0.73 0.61 0.55 -
4X Second
 35   - 0.49 0.47 0.45 0.35 0.24 0.20 0.26 0.32 0.17
 65   0.40 - 0.67 0.60 0.54 0.49 0.45 0.39 0.31 0.30
 95   0.36 0.87 - 0.71 0.65 0.57 0.50 0.44 0.38 0.32
 125   0.31 0.61 0.91 - 0.73 0.64 0.56 0.52 0.47 0.37
 155   0.14 0.57 0.86 0.95 - 0.71 0.66 0.61 0.54 0.45
 185   −0.04 0.63 0.72 0.70 0.87 - 0.76 0.71 0.60 0.55
 225   0.01 0.63 0.61 0.53 0.72 0.96 - 0.80 0.69 0.63
 245   0.27 0.55 0.56 0.55 0.70 0.86 0.93 - 0.80 0.69
 275   0.41 0.32 0.46 0.59 0.69 0.71 0.75 0.93 - 0.74
 305   −0.29 0.17 0.29 0.42 0.73 0.97 0.97 0.88 0.73 -
  1. aMilking frequency