The aim of this study is to evaluate the effect of calving season and parity on the productivity
and profitability of private and governmental dairy farms in Egypt. The data of this study were
estimated from 1353 lactation records of Friesian dairy cows. The data were classified
according to calving season into winter and summer calvers, and according to parity into six
lactation orders from 1st to 6th, then the data were analyzed statistically by using the computer
programs SPSS/PC+ version 23. Total milk yield (305MY) and net profit (NP) differed
significantly between calving season and parity within production sector, private sector for
winter calvers and 3rd parity had the highest 305MY and NP (9759.5Kg - 40960.9 EGP and
10304.3 kg, 44546.1 EGP, respectively), while governmental sector for summer calvers and
6th parity had the lowest 305MY and NP (5028.4Kg-12117.1EGP and 4460.1kg, 10027.3 EGP,
respectively). Total cost (TC) differed significantly within parity and sector, it was the highest
for the private sector at 4th parity (34849.1EGp), while 6th parity for governmental sector had
the lowest value (27657.5 EGP). Finally, we concluded that winter calvers and 3rd parity
achieve the highest profitability for dairy farms.