Economic values for milk production (milk yield, MY and fat yield, FY), reproductive (age at
first calving, AFC and calving interval, CI), growth (preweaning daily gain, DG; postweaning …

Milk is one of the most important food in the world, being consumed in natura or supporting
the dairy industry. In Brazil, specifically, the milk supply chain corresponds to about 20% of …

The objective of this study was to determine the optimum replacement policy for Holstein
dairy herds in Iran using a dynamic programming model. Cows were described in terms of …

Understanding optimal replacement practices is essential in milk production management.
In this study, we produced a stochastic dynamic optimization model that included the risk of …

The objective of this study was to determine the effect of reproductive performance on dairy
cattle herd value. Herd value was defined as the herd's average retention payoff (RPO) …

Herd optimization models that determine economically optimal insemination and
replacement decisions are valuable research tools to study various aspects of farming …

Data on accumulated life performance of crosses of Ayrshire (A), Brown Swiss (B), Friesian
(F) and Sahiwal (S) cattle collected over a 21-year period from a dairy ranch in the lowland …

Objetivou-se com esta pesquisa, analisar e quantificar a influência do descarte involuntário
de matrizes no impacto econômico da mastite em rebanhos leiteiros. A pesquisa foi …

Foram utilizadas 19.565 lactações vitalícias de vacas da raça Holandesa para avaliar o
impacto dos motivos de descarte sobre a rentabilidade vitalícia de vacas leiteiras, mais …

Livestock farming problems are often sequential in nature. For instance at a specific time
instance the decision on whether to replace an animal or not is based on known information …