The peripartum period is of critical importance to subsequent health and fertility. Most cows
enter a state of negative energy balance (NEB) associated with many metabolic changes …

The rearing period has a key influence on the later performance of cattle, affecting future
fertility and longevity. Producers usually aim to breed replacement heifers by 15 months to …

This prospective study was designed to investigate possible carryover effects of calf
management practices and how events occurring during the first 16 wk of life affect first …

Highlights•A machine learning framework was developed to predict cow production
performance.•Models were trained using 5 years' data collected from robotic milking …

In the present study, records on 115,291 heifers distributed in 113 herds were used to
investigate the association between age at the first calving (AFC) and lactation performance …

Production and pedigree data of Iranian Holsteins were collected from 1991 to the end of
2001 on 45 herds in Isfahan province. Data on culled cows (birth and culling dates) were …

Lactation records from 396,534 pedigree Holstein and Holstein-Friesian primiparous cows
from 6,985 UK milk recorded herds, calving for the first time during the period between the …

The average dairy cow survives only three lactations, reducing the availability of
replacement heifers. Prenatal losses occur due to early embryonic mortality (about 40%) …

Age at first calving (AFC) affects the profitability of dairy enterprises. This study examined the
relationships between AFC and subsequent fertility, milk production and survival up to third …

The objective of this paper was to study some factors affecting reproductive performance of a
locally-born Friesian herd in Egypt. Data of 2096 reproductive records representing 482 …