Wolfgang Heuwieser

Wolfgang Heuwieser
Freie Universität Berlin | FUB · Animal Reproduction Clinic

Prof. Dr.

About

444
Publications
64,983
Reads
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8,477
Citations
Introduction
Increasing animal health and animal welfare through human resource development and quality management. Efficacy of standard operating procedures delivered through microlearning courses.
Additional affiliations
July 2017 - June 2022
Cornell University
Position
  • Professor (Associate)
Description
  • Online training modules for milkers (e.g. milking routines and equipment). Standard operating procedures.
April 2008 - February 2009
University of British Columbia - Vancouver
February 1994 - present
Freie Universität Berlin

Publications

Publications (444)
Article
In many farms, the logistics of on-farm training are a limiting factor due to communication challenges in the workplace (i.e., cultural differences, language barriers, impaired listening skills) and limited access to industry professionals. The use of E-learning systems may help to improve communication and can be sensitive to cultural challenges....
Conference Paper
Full-text available
The objective of this observational study was to evaluate the association of estrous expression within 50 days in milk (DIM) using a neck-mounted automated activity monitor (AAM; Heatime Pro; SCR Engineers Ltd., Netanya, Israel) and reproductive performance in lactating Holstein cows. A total of 3,334 lactating cows (1,017 primiparous cows and 2,31...
Presentation
Full-text available
Oral presentation showcasing BovHEAT and pushing the importance and advantages of open-source and code sharing in precision livestock farming (PLF)... This study introduces the software called Bovine Heat Detection and Analysis Tool (BovHEAT), a validated and open-source analysis tool to process automated activity monitoring (AAM) data for estrus...
Conference Paper
Full-text available
The objective of this observational, retrospective study was to determine the association between the timing of artificial insemination (AI) and pregnancy per AI (P/AI) in nulliparous Holstein heifers inseminated either with sexed or conventional semen considering different characteristics of an estrus event (i.e., onset, peak, and end) using an au...
Article
Self-directed learning is associated with several benefits in simulation-based clinical skill training and can be complemented by feedback in the form of post-event debriefing. In this study, final-year veterinary medicine students ( n = 111) were allocated into one of three groups and practiced four clinical skills from the domain of production an...
Article
The objective of this prospective cohort study was to evaluate the association between the prepartum days in the close-up group (DINCU) and milk yield, milk components, reproductive performance, and culling risk in the subsequent lactation for Holstein dairy cows. Dry cow feeding management of 20 farms was evaluated during 2 farm visits. All farms...
Article
Full-text available
The objective of this study was to compare immediate intramammary antimicrobial treatment of mild and moderate cases of clinical mastitis (CM) with a selective treatment protocol based on on-farm culture results using Accumast®. The study was conducted at a 2600 cow commercial farm in Northeast Germany. Using a randomized design, mild and moderate...
Article
The objective of this study was to evaluate the effect of the nonsteroidal anti-inflammatory drug transdermal flunixin meglumine (Finadyne Transdermal) on plasma cortisol, average daily weight gain, and standing and lying behavior of calves, when given at the time of disbudding combined with local anesthesia. A sedative was not used to minimize pha...
Article
Full-text available
Accurate detection of the onset of parturition is a key factor in the prevention of dystocia. In order to establish current best practice recommendations for calving management, we asked subject matter experts (SME) who had published on calving management (by online survey, n = 80) and non-SMEs, veterinary practitioners (by workshop survey, n = 24)...
Article
The objective of this observational study was to evaluate the association of management-related factors in dry cows and colostrum quantity and quality in Holstein cows on a large commercial dairy farm. This study was conducted from January 2018 to December 2020 on a commercial dairy farm in Germany, milking approximately 2,500 Holstein cows. Dairy...
Article
The objectives of the present study were (1) to evaluate the effect of prepartum cholecalciferol treatment on serum Ca concentration during the first 10 d after calving and (2) to evaluate the effect of treatment on subsequent health and performance. Multiparous Holstein cows (n = 377) from one dairy farm were fed a negative dietary cation-anion di...
Article
The aim of this study was to determine the association between occurrence and intensity of estrous expression with pregnancy success in recipient lactating dairy cows subjected to embryo transfer (ET). Two observational studies were conducted. Holstein cows were synchronized using the same timed ET protocol, based on estradiol and progesterone in b...
Article
This application note introduces the software called Bovine Heat Detection and Analysis Tool (BovHEAT), a validated and open-source analysis tool to process automated activity monitoring (AAM) data for estrus detection. We used activity data collected from a neck-attached accelerometer (Heatime, SCR Engineers Ltd., Netanya, Israel) that is widely a...
Poster
Full-text available
Das Ziel der Studie war die Entwicklung einer neuen Methode zur Verarbeitung und Auswertung von Aktivitätsdaten aus Systemen zur automatischen Aktivitätsüberwachung (AAM) für die Brunsterkennung bei Milchkühen. Alle bereits etablierten Methoden beinhalten Arbeitsschritte, die per Hand ausgeführt werden und dementsprechend, besonders bei großen Date...
Article
Incomplete luteal regression after treatment with a single dose of PGF2α during an Ovsynch protocol decreases fertility to timed artificial insemination (AI). An additional treatment with PGF2α 24 h after the first dose has been recommended to increase the proportion of cows with complete luteal regression and subsequent pregnancy per AI (P/AI). Th...
Article
Full-text available
The aim of this study was to determine the association between concentrations of progesterone (P4) during previous the estrous cycle with the intensity of spontaneous or estrogen-induced estrous expression and pregnancy per artificial insemination (P/AI) . A total of 1,953 AI events from lactating Holstein cows were used, consisting of 1,289 timed...
Conference Paper
The objectives of the present study were (1) to evaluate the effect of cholecalciferol treatment on Ca concentration during the first 10 DIM and (2) to evaluate the effect of treatment on subsequent health and performance. Multiparous Holstein cows (n = 375) were fed a negative DCAD diet (−31 mEq/kg DM) for the last 21 d of gestation. On d 275, the...
Conference Paper
Full-text available
The objective of this observational study was to evaluate the association of estrous expression within 40 days in milk using a neck-mounted automated activity monitor (AAM; Heatime Pro; SCR Engineers Ltd., Netanya, Israel) with reproductive performance in lactating Holstein cows. A total of 2,077 cows from 5 commercial dairy farms were included in...
Conference Paper
Incomplete luteal regression after treatment with a single dose of prostaglandin F2α during an Ovsynch protocol decreases fertility to timed artificial insemination (TAI). To increase the proportion of cows with complete luteal regression and subsequently pregnancy per AI (P/AI), an additional treatment with prostaglandin F2α (PGF) 24 h after the f...
Article
Post-event debriefing has been described as an effective tool in improving learning achievements in simulator-based teaching. This article examines the effect of structured post-event debriefing sessions in simulator-based veterinary clinical skills training. Nineteen Namibian veterinary students took part in instructor-led practice, self-directed...
Article
The objective of this observational study was to evaluate the association of estrous expression within 40 days in milk (DIM) using a neck-mounted automated activity monitor (Heatime Pro; SCR Engineers Ltd.) with reproductive performance in lactating Holstein cows. A total of 2,077 cows (614 primiparous cows and 1,463 multiparous cows) from 5 commer...
Preprint
Full-text available
The aim of this study was to determine the association between concentrations of progesterone (P4) during previous the estrous cycle with the intensity of spontaneous or estrogen-induced estrous expression and pregnancy per artificial insemination (P/AI) . A total of 1,953 AI events from lactating Holstein cows were used, consisting of 1,289 timed...
Article
The objective of this observational study was to identify factors associated with estrous duration (DU) and intensity measured as the peak of activity (PA) change and subsequent fertility in lactating Holstein cows using a neck-mounted automated activity monitor (Heatime Pro, SCR Engineers Ltd., Netanya, Israel). Ambient temperature and relative hu...
Article
The determination of passive immunization by colostrum uptake in neonatal calves is an extremely valuable tool to assess the on-farm colostrum management. A simple and practicable method to assess the colostrum management is the determination of total proteins (TP) or total solids (TS) by refractometry using blood serum or plasma of the neonatal ca...
Article
The objective of this observational experiment was to determine the association between the time of artificial insemination (AI) and pregnancy per AI (P/AI) in lactating Holstein cows inseminated with either fresh or frozen semen considering different characteristics of an estrus event (i.e., onset, peak, and end) using an automated activity monito...
Article
Timely and objective diagnosis and classification of mastitis is crucial to ensure adequate management and therapeutic decisions. Analyzing specific biomarkers in milk could be advantageous compared with subjective or semiquantitative criteria, such as palpation of the udder in clinical mastitis cases or evaluation of somatic cell count using cow s...
Article
Efficient calving surveillance is essential for avoiding stillbirth due to unattended dystocia. Calving sensors can help detect the onset of parturition and thus ensure timely calving assistance if necessary. Tail-raising is an indicator of imminent calving. The objective of this study was to evaluate a tail-mounted inclinometer sensor (Moocall Ltd...
Article
The objective of this study was to evaluate the effect of two prostaglandin F2α (PGF) treatments 24 h apart (500 μg of cloprostenol) and treatment with a double PGF dose on d 7 (1,000 μg of cloprostenol) during a 7-d Ovsynch protocol on progesterone (P4) concentration and pregnancy per artificial insemination (P/AI) in lactating Holstein cows. We h...
Article
The objective of this study was to compare periparturient serum Ca dynamics (CaDyn) in cows with and without diseases in early lactation. The study enrolled 1,949 cows from a commercial dairy farm in northern Germany. Blood samples were drawn 7 d before expected calving date and on d 0, 1, 3, and 7 after calving and analyzed for serum Ca concentrat...
Article
Full-text available
Progesterone (P4) concentration during follicular growth has a major impact on fertility response in timed artificial insemination (TAI) protocols. Luteal presence at the beginning of a TAI protocol and ovarian response after the first gonadotropin-releasing hormone (GnRH) injection (G1) affect P4 concentration and subsequently pregnancy per artifi...
Article
While the use of simulator-based clinical skill training has become increasingly popular in veterinary education in recent years, little research has been done regarding optimal implementation of such tools to maximize student learning in veterinary curricula. The objective of this study was to compare the effects of supervised and unsupervised del...
Article
The objective of this study was to evaluate different analytical methods of assessing failure of passive transfer (FPT) in neonatal calves. We hypothesized that 3 different media (i.e., centrifuged serum, centrifuged plasma, filtered plasma) and different analytical methods [i.e., ELISA, capillary electrophoresis (CE), Brix refractometer, and handh...
Article
The objectives were to study the effect of 2 different automatic cluster remover settings on (1) milking characteristics, (2) milk component yields, (3) teat tissue condition, and (4) udder health. In a randomized controlled field trial, Holstein cows (n = 689) from 1 commercial dairy farm with a thrice-daily milking schedule were allocated to 2 tr...
Article
The objectives of this study were to evaluate postpartum serum calcium dynamics for different parity groups of dairy cows and to assess whether serum calcium concentration on d 0, 1, and 3 postpartum was associated with the risk of developing acute puerperal metritis (APM). The study took place on a commercial dairy farm in northern Germany and inc...
Article
This Research Communication describes the residue concentration of a dry cow antibiotic in two different milk fractions and describes effects of milk fraction and milk composition on the test performance of a rapid screening and a microbial inhibitor test. Thirteen dry cows were treated with an intramammary dry cow antibiotic containing 150 mg cefq...
Article
Optimization of work processes and personnel compliance becomes progressively essential to ensure high process and product quality on dairy farms with an increasingly nonfamily work force. Standard operating procedures (SOP) are important to minimize variation. In addition to having a set of protocols and SOP, regular training of employees is indis...
Article
The objective of this study was to evaluate 2 different treatment procedures at the first milking after calving to increase colostrum quantity and to improve colostrum quality in dairy cows. We hypothesized that either exogenous treatment with oxytocin or the presence of the calf at first milking would lead to higher colostrum quantity and higher I...
Article
Full-text available
The aim of this study was to evaluate the effects of evaporative cooling at two different frequencies per day on the respiration rate (RR) of lactating dairy cows, considering cow-related factors. Twenty multiparous Israeli Holstein dairy cows housed in a naturally ventilated cowshed were divided randomly into two treatment groups. The cows of both...
Article
In times of ongoing automatization of dairy cow husbandry, objective and reliable tools for mastitis diagnostic are highly in demand. The objective of this study was to investigate the diagnostic value of a handheld dynamometer and an infrared thermometer to diagnose and score clinical and subclinical mastitis and to compare those values with resul...
Article
Full-text available
The objective of this study was to gain information on udder health management and the use of antimicrobials in mastitis in dairy cows. The role of veterinarians in udder health management on dairy farms in Germany was a further focal point of this study. A total of 499 completed survey forms were returned by participating farms from nine federal s...
Article
Full-text available
The main objective of this study was to identify the influences of different climatic conditions and cow-related factors on the respiration rate (RR) of lactating dairy cows. Measurements were performed on 84 lactating Holstein Friesian dairy cows (first to eighth lactation) in Brandenburg, Germany. The RR was measured hourly or twice a day with up...
Article
Changes in teat canal diameter as induced by machine milking are thought to be related to teat canal penetrability and susceptibility to new intramammary infections. The objective of this study was to describe the effects of machine milking on teat canal dimensions as assessed by ultrasonography and to evaluate postmilking changes of teat canal dim...
Article
Calving is assumed to be an exhausting and painful event. A drug that eases the calving procedure and alleviates pain would help cows, especially those suffering from dystocia. In a randomized, controlled, and blinded trial, we measured the effect of denaverine hydrochloride on physical and physiological calving parameters. Eighty-three Holstein-Fr...
Article
The measurement of the respiration rate (RR) in cattle is a valuable tool for monitoring health status. Thus, an RR sensor can be essential for stress detection, especially heat stress. Heat stress leads to a deviation of the normal RR and results in a decrease of milk production and fertility. Therefore, continuous monitoring of the RR can help ea...
Article
Full-text available
The objective of this study was to evaluate a filter system to harvest plasma to assess failure of passive transfer (FPT) in newborn calves. Blood samples (n = 227) for serum and plasma harvesting were collected via jugular vein puncture from Holstein calves aged 1 to 7 d from 4 commercial dairy herds in Northeast Germany. Serum IgG concentrations...
Article
Contents The objective of this study was to identify the physiological ranges of body temperature of bitches in the first 7 days after parturition by measurement with ingestible temperature loggers. Twenty bitches swallowed one ingestible temperature logger daily. Bitches were defined to be healthy by spontaneous parturition and leucocyte concentra...
Article
Full-text available
The objectives of this study were (1) to assess the effect of purulent vaginal discharge (PVD) on reproductive performance using a 4-point vaginal discharge score (VDS) and (2) to evaluate the effect of PGF2α treatment in cows with PVD on reproductive performance. Holstein cows (n = 2,473) from 1 commercial dairy farm had their vaginal discharge sc...
Article
A robust liquid chromatography-tandem mass spectrometry method was developed and comprehensively validated for the quantification of cefquinome considering the changing matrix composition from bovine colostrum to raw milk. Sample preparation consisted of addition of isotopically labeled cefquinome internal standard prior to protein precipitation of...
Article
The objective of the study was to update a prior meta-analysis on the efficacy of the treatment of bovine endometritis with PGF2α. Clinical endometritis in cattle is defined as the presence of a purulent or mucopurulent vaginal discharge after 20 or 26 d, respectively, postpartum. Although the prevalence and impact of this disease are well known, t...
Article
Periparturient hypocalcemia is frequently observed and considered as a gateway disease that is associated with various health issues. The objective of this study was to evaluate the association of hypocalcemia with early-lactation milk yield, reproductive performance, and culling across a large number of different managerial systems. A prospective...
Article
Incomplete luteal regression after treatment with a single dose of prostaglandin F2α during an Ovsynch protocol decreases fertility to timed artificial insemination (TAI). To increase the proportion of cows with complete luteal regression and subsequently pregnancy per artificial insemination (P/AI), an additional treatment with PGF2α 24 h after th...
Article
Objective: The aim of this study was to evaluate the influence of Denaverine hydrochloride (DNH) in heifers on calf vitality. Material and methods: A total of 83 calvings with 38 female and 45 male calves were included in the study. Thirty minutes after onset of stage 2 of calving, 400 mg DNH or placebo (0.9% NaCl) were administered subcutaneous...
Article
Short dry periods and their effects on milk production, reproductive performance, as well as cow and udder health have been widely studied. A dearth of information is available about the consequences of short dry periods on the residue concentrations of dry cow antibiotics in milk after calving. The objective of our study was to determine the resid...
Article
The use of point-of-care (POC) devices to measure blood metabolites, such as β-hydroxybutyrate (BHB), on farm have become an important diagnostic and screening tool in the modern dairy industry. The POC devices allow for immediate decision making and are often more economical than the use of laboratory-based methods; however, precision and accuracy...
Article
Full-text available
Fast and accurate identification of disease-causing pathogens is essential for specific antimicrobial therapy in human and veterinary medicine. In these experiments, dogs were trained to identify Staphylococcus aureus and differentiate it from other common mastitis-causing pathogens by smell. Headspaces from agar plates, inoculated raw milk samples...
Article
The objective of this study was to evaluate hair cortisol concentration as an indicator for stress caused by chronic lameness in dairy cows. Sixty-eight cows were scored for lameness for 4 consecutive weeks. The hair of the tail switch was clipped at the beginning of the study and regrown hair was clipped after 4 wk. Hair samples were analyzed for...
Article
Acute puerperal metritis is one of the most important disorders in postpartum dairy cows and the incidence ranges: between 14,8% and 40,9% (Chapinal et al. 2011, Sannmann et al. i 2013, Lima et al. 2014). Cows with metritis have an impaired reproductive performance, a higher culling risk and a reduced milk yield compared with healthy cows. Most com...
Article
The objective of this study was to evaluate fertility to the first timed AI (TAI) using either liquid semen or frozen semen after an Ovsynch or a Cosynch protocol in lactating dairy cows. The hypothesis was that there is an increase in fertility to the first TAI when cows are inseminated with liquid semen compared to that when frozen semen is used...
Article
The objective of this study was to determine minimum inhibitory concentrations (MIC) of frequently used antimicrobials for Escherichia coli and Trueperella pyogenes isolated from postpartum bovine uteri of cows with acute puerperal metritis (APM, n = 67), cows suspected to have APM (n = 37), and healthy cows (n = 37) and to evaluate possible differ...
Article
The objectives were to (1) develop a standard operating procedure (SOP) for ultrasound-based measurements of teat canal dimensions and (2) determine the precision of ultrasound-based measurements of teat canal dimensions in dairy cows. Teat scans (n = 64) of the right hind and left front teats from 16 cows were obtained with a portable ultrasound d...
Article
Hypocalcemia around calving is considered a gateway disease that can lead to health disorders and decreased milk production. The objective of this cross-sectional study was to evaluate the prevalence of clinical and subclinical hypocalcemia 0 to 48 h after calving. Blood samples were drawn from 12 animals of each dairy farm (n = 115) and analyzed f...
Article
The objective of this study was to investigate the impact of heat stress on the expression of estrus signs and follicular diameter at the day of estrus in dairy cows under farm conditions. Cows reported in estrus (i.e., by an automated activity monitoring system or by the herd manager) were examined by a veterinarian. Uterine contractility and the...
Article
Hypocalcemia is frequently described in the current literature as a gateway disease that predisposes the cow to various other diseases or health issues. Recent studies have investigated the potential of oral calcium applications around calving in order to prevent hypocalcemia. While the first article compared oral calcium supplementation with intra...
Article
Five steps have been recommended to provide evidence-based patient care: formulating a clinical question, searching for literature, evaluating the validity and applicability of results, implementing results into practice, and assessing if the new evidence has led to improved health care. Students can be trained in these steps by the development of...
Article
The objective of this study was to conduct a survey to gain insight into the organization of work processes on commercial German dairy farms analyzing the use of standard operating procedures (SOP). Practices and routines were surveyed regarding the existence, creation, and use of SOP. A total of 250 survey forms were returned, and 248 could be use...
Poster
Full-text available
Objectives: To compare liquid stored and frozen semen using either an Ovsynch or a Cosynch protocol for the first TAI in a 2 x 2 factorial design. Methods: This experiment was performed on 9 commercial dairy farms in Mecklenburg-Vorpommern, Germany from April 2016 to October 2016. Lactating dairy cows (n = 1,724; 540 primiparous, 1,185 multiparous)...
Article
The objectives of this study were to describe the associations between hypoglycemia and the onset of hyperketonemia (HYK) within the first 6 wk of lactation, to evaluate the effects of body condition score at calving on glucose concentration, and to study the effects of hypoglycemia on milk production. A total of 621 dairy cows from 6 commercial da...
Article
In this study, a standardized experimental set-up with various combinations of herbs as odor sources was designed. Two training approaches for sniffer dogs were compared; first, training with a pure reference odor, and second, training with a variety of odor mixtures with the target odor as a common denominator. The ability of the dogs to identify...
Article
The objective of this study was to predict stage 2 of calving in Holstein-Friesian heifers. Interobserver reliability and predictive values of relevant signs of imminent parturition (i.e., tail raising, stepping, clear and bloody vaginal discharge, turning the head toward the abdomen, and lying lateral with abdominal contractions) were determined....
Article
Scientific papers on calving of dairy cows are critically discussed in this article. Calving is still one of the most crucial events in the life of a dairy cow. A systematic review on risk factor for stillbirth, a clinical study for an evaluation of a remote calving alarm system and two studies on effect of NSAID application during calving were sel...
Article
The objective of this meta-analysis was to assess the efficacy of the treatment of bovine metritis with common antibiotic and nonantibiotic treatment options. Acute puerperal metritis, a systemic and potentially painful illness with rectal temperature >39.5?C and signs of toxemia due to an infection of the uterus, occurs within 21 d after parturiti...
Article
Presynchronization of cows with 2 injections of prostaglandin administered 14 d apart (Presynch-Ovsynch) is a widely adopted procedure to increase pregnancy per artificial insemination (P/AI) at first service. Recently, a presynchronization protocol including GnRH and PGF2α (Double-Ovsynch; GnRH, 7 d, PGF2α, 3 d, GnRH) followed 7 d later by an Ovsy...
Article
In recent years, relationships between high milk yield at dry off, higher prevalence for new intramammary infections, and stress were evaluated. Considering increasing milk yield, dry off methods need to be refined to ensure udder health and animal welfare, especially in high-yielding dairy cows. The present work evaluated the effect of a single ca...
Article
Swelling of the mammary gland is an important sign to detect clinical mastitis (CM) in dairy cows. The overall objective of this study was to evaluate if udder firmness can be used as a cow-side indicator for mastitis and to evaluate how CM affects firmness within 14 d after diagnosis. A dynamometer was used to objectively determine udder firmness...