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        2005 continued
• UBC’s Department of Civil Engineering establishes the Energy and Nutrient Recovery Facility on site.
• The new barn to house growing heifers is completed.
2006
• Construction of the WestGen Calf Research Facility is completed, housing milk fed calves in group pens with automated feeding and feed intake monitoring.
2008
• Marina von Keyserlingk appointed as an NSERC Industrial Research Chair.
2009
• Construction completed of a lab building containing research laboratories, offices and Bank of Montreal Conference Room with capacity for 65 people.
2010
• Dairy animal reproduction faculty member Ronaldo Cerri is hired.
2013
• Sand/manure separation and recovery system completed.
2015
• Construction and furnishing of a 32-bed student residence is completed.
2018
• Jim Thompson, Professor and Founding Director of the Dairy Education and Research Centre, retires on December 31.
2019
• Associate Professor Ronaldo Cerri becomes new Director on January 1.
• UBC and AAFC sign new Lease Agreement.
2020
• Looking ahead through 2020 and beyond, the Centre plans to invest in state- of-the-art, automated milking equipment.
FALL 2020 a BC HOLSTEIN NEWS 37
    PRIMARY RESEARCHER AND LEAD STUDENT
RESEARCH QUESTION
FINDINGS
TAKE HOME MESSAGE
        Ronaldo Cerri and Augusto M.L. Madureira
Is the intensity of estrous expression, measured using automated activity monitors, associated with the success of embryo transfer?
Increased estrous expression was found to: a) increase the percentage of
embryos viable for transfer after a
superovulation protocol in heifers b) increase the success of embryo
transfer in recipient cows, regardless of the origin of the embryo
Quantifying estrous expression, using an automated activity monitor, can be a practical tool for producers to predict the success of embryo transfer, at either the donor or recipient level.
       Ronaldo Cerri and Tracy A. Burnett
Can the reduced fertility found in cows expression low amounts of estrous expression be mitigated by stimulating ovulation using gonadotropin-releasing hormone (e.g. Factrel) at the moment of artificial insemination (AI)?
The use of gonadotropin-releasing hormone (GnRH) at the moment of AI was found to increase the fertility of cows with low estrous expression, but not those with greater estrous expression; this interaction between GnRH administration and estrous expression was consistent across farms. However, this increase in fertility was not explained by ovulation.
Selectively administering GnRH at the moment of AI to cows with low estrous expression can be an effective way to strategically use hormonal interventions and increase on-farm fertility.
        Ronaldo Cerri and Janet W. Bauer
Can automated activity monitors be used in the dry period to monitor for calving and the development of metritis early post- partum?
Behavioural changes were found using the automated activity monitors. Cows laid down less, spent less time lying per bout, and were more active during the last 16 h before calving. Additionally, cows later diagnosed with metritis tended
to spend more time lying per bout and were less active during the two weeks prepartum and one week postpartum prior to diagnosis.
Distinct changes in behaviour at calving and prior to metritis diagnosis can be observed automatically using activity monitors. These behavioural changes have the potential to be used to create useful alerts which producers could use to more efficiently manage their cows for calving and transition health.
        Ronaldo Cerri and Janet W. Bauer
Can the duration of labour or human assistance during calving impact the occurrence of metritis in dairy cows?
Overall, as the duration of calving increased so did the probability that the cow would be diagnosed with metritis. However, in cows that had assisted labours, removal of the calf too soon actually increased the cows chances
of metritis. Assistance around 130 min from the moment of the appearance of the amniotic sac had the lowest risk of metritis.
The risk of metritis increases in cows that are in labour longer, however, removal
of the calf too early is also problematic. A reference time of 130 min, from the appearance of the amniotic sac, could be used to try to safely assist cows at calving without increasing their chances of metritis.
                  1 - The faculty, staff and students truly appreciate the tremendous resource that the Dairy Education Centre affords them for learning, teaching and researching a wide variety of dairy projects.
2 - Having onsite student accommodation presents a great advantage in attracting international researchers to the program.
Photos: Supplied by UBC Dairy Education & Research Centre
3 - The modern manure processing system and the feed-intake facility help keep UBC’s research facility relevant in an industry that embraces technological innovations.
       Legendairy Farm 2 DeLaval V310s
Congratulations
to all of our recent start-ups on their new facilities and VMS robots!
Melinke Farms 3 DeLaval V300s
  Jonker Holsteins 3 DeLaval V310s
Davison Farms 2 DeLaval V300s
 J&D Farmers Dairy ServiceLTD
 Abbotsford 1160 Riverside Rd. 604-853-2372
Enderby
704 Old Vernon Rd. 250-838-0745
   www.jdfarmers.com
   


































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