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Table 4 Descriptive statistics of lactation curve parameters

From: Effects of season and age at first calving on genetic and phenotypic characteristics of lactation curve parameters in Holstein cows

Parameters Mean SD
a 16.62 6.60
b 0.27 0.03
c 0.003 0.001
Peak time (day) 76.60 24.86
Peak yield (kg) 33.10 5.19
Part1 2985.09 496.87
Part2 3051.69 579.44
Part3 2681.95 647.14
Milk305 8718.73 1623.05
Persis1 102.27 9.68
Persis2 89.82 15.89