When is a cow in estrus? Clinical and practical aspects

J Roelofs, F Lopez-Gatius, RHF Hunter… - Theriogenology, 2010 - Elsevier
Good detection of estrus is critically important in dairy husbandry. Incorrect detection of
estrus is related to loss of profit due to extended calving intervals, milk loss, veterinary costs …

Reproductive technologies in farm animals

I Gordon - 2017 - books.google.com
Building on the successful structure of the first edition, the second edition of Reproductive
Technologies in Farm Animals has been totally updated and revised to provide an up to date …

Pedometer readings for estrous detection and as predictor for time of ovulation in dairy cattle

JB Roelofs, FJCM van Eerdenburg, NM Soede… - Theriogenology, 2005 - Elsevier
The objective of this study was to study the relationship between increase in number of steps
measured by pedometers, behavioral estrous parameters and time of ovulation, in order to …

Various behavioral signs of estrous and their relationship with time of ovulation in dairy cattle

JB Roelofs, F Van Eerdenburg, NM Soede, B Kemp - Theriogenology, 2005 - Elsevier
The objective of this study was to investigate the relationship between various behavioral
signs of estrous and time of ovulation and, determine which behavioral estrous sign (s) best …

[HTML][HTML] Automated estrous detection using multiple commercial precision dairy monitoring technologies in synchronized dairy cows

LM Mayo, WJ Silvia, DL Ray, BW Jones, AE Stone… - Journal of dairy …, 2019 - Elsevier
Estrus in dairy cattle varies in duration and intensity, highlighting the need for accurate and
continuous monitoring to determine optimal breeding time. The objective of this study was to …

Walking activity at estrus and subsequent fertility in dairy cows

F López-Gatius, P Santolaria, I Mundet, JL Yániz - Theriogenology, 2005 - Elsevier
Poor detection of estrus, still a major problem in the dairy industry, has prompted the
development of electronic estrous detection technologies. One of the features of estrous …

Expression and detection of estrus in dairy cows: the role of new technologies

PM Fricke, PD Carvalho, JO Giordano, A Valenza… - animal, 2014 - cambridge.org
Despite the widespread adoption of hormonal synchronization protocols that allow for timed
artificial insemination (AI), detection of estrus plays an important role in the reproductive …

[HTML][HTML] An economic decision-making support system for selection of reproductive management programs on dairy farms

JO Giordano, PM Fricke, MC Wiltbank… - Journal of dairy science, 2011 - Elsevier
Because the reproductive performance of lactating dairy cows influences the profitability of
dairy operations, predicting the future reproductive and economic performance of dairy …

Localisation and identification performances of a real-time location system based on ultra wide band technology for monitoring and tracking dairy cow behaviour in a …

SMC Porto, C Arcidiacono, A Giummarra… - … and Electronics in …, 2014 - Elsevier
The objective of this study was to evaluate the localisation and identification performances of
a Real-Time Location System (RTLS) based on Ultra Wide Band (UWB) technology within a …

Machine-learning techniques can enhance dairy cow estrus detection using location and acceleration data

J Wang, M Bell, X Liu, G Liu - Animals, 2020 - mdpi.com
Simple Summary We investigated the feasibility of combing location, acceleration, and
machine learning technologies to accurately detect dairy cows in estrus. An automatic data …