The lactation milk yield, persistency of lactation and calving interval have marked effects on dairy economy . The milk production follows an ascending, stabilized, and descending line with the advance of lactation. The cows having flatter lactation curve are
more persistent, and produce milk with a lower cost Calving interval has also significant effect on the lifetime milk production and cow replacement rate in a herd Lactation yield, persistency and calving interval
are influenced by various factors such as inheritance period, season, parity, age, etc.
The Anatolian buffaloes are classed as a river type belonging to a Mediterranean group The present investigation has been undertaken to study the non-genetic factors affecting milk production traits, persistency and calving interval, and to estimate the repeatabilities and phenotypic correlations of these traits in buffaloes in the Afyon province of Turkey