Global warming and price volatility are increasing uncertainty for the future of agriculture.
Therefore, agricultural systems must be sustainable not only under average conditions, but …

Surplus dairy calves consist of all dairy bull calves and any heifer calves not needed as
replacements for the milking herd. The fate of these surplus calves varies by region; for …

The net economic value of reproductive efficiency in dairy cattle was estimated using a
stochastic dynamic simulation model. The objective was to compare the economic …

Mammalian females pay high energetic costs for reproduction, the greatest of which is
imposed by lactation. The synthesis of milk requires, in part, the mobilization of bodily …

The milk market in the European Union (EU) is adjusting rapidly to the removal of dairy
quotas. The most important changes include increased milk yield per cow, increased total …

When making the decision about whether or not to breed a given cow, knowledge about the
expected outcome would have an economic impact on profitability of the breeding program …

A general belief across the dairy community, both scientific and commercial, is that of an
antagonistic association between milk production and reproductive performance of dairy …

Improving dairy cow fertility by means of genetic selection is likely to become increasingly
important, since it is now well established that declining fertility cannot only be arrested by …

This study was performed to estimate the effect of age at first calving and first two calving
intervals on productive life and life time profit in Korean Holsteins. Reproduction data of …

Milk yields> 10,000 kg/year are common in modern dairy production, owing to improved
nutrition, management and genetics gains through use of progeny-tested bulls. However …