Contents There is evidence that the reproductive performance of dairy cows has declined as
milk yields have increased over the last 40 years. Identifying the precise cause (s) of this …

In test-day (TD) models, records from individual test days are used to determine lactation
production instead of aggregating records. Test-day models have recently gained …

Fourteen Holstein cows of similar ages were monitored through their first two lactation
cycles, during which ruminal solids and liquids, milk samples, production data, and feed …

The objective of this study was to estimate the value of pregnancy for dairy cows. Effects of
the stage of gestation, stage of lactation, lactation number, milk yield, milk price, replacement …

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

Successfully using artificial insemination (AI) is defined as getting cows pregnant when the
farmer wants them in-calf and making the best use of appropriate genetic potential. Over the …

Data from Australian Holstein–Friesian cattle on calving interval (CI), survival (Surv), mean
milk yield (MY), mean fat yield (FY), mean loge somatic cell count (LnSCC) and the …

• Genetic selection can be used to alter the shape of the lactation curve, manufacturing
properties of milk, and composition associated with human health.• Mid-infrared spectral …

This review gives an overview of the mathematical modelling of lactation curves in dairy
cattle. Over the last ninety years, the development of this field of study has followed the main …

Lactation is a dynamic process, which evolved to meet dietary demands of growing
offspring. At the same time, the mother's metabolism changes to meet the high requirements …