ABCSTRACT INSTRUCTIONS

Abstracts should be written in English and should be no longer than 500 words. The abstract title should be no longer than 50 words, and should clearly indicate the nature of the paper. The author’s affiliation should include the name of the organization and its country. The corresponding author should also include the contact e-mail address. The abstract must represent original work and should be as informative as possible. Conclusions must be supported by data.

The body of the abstract should be ordered as follows:

  • Objectives
  • Materials and Methods
  • Results
  • Conclusions

It is the author’s responsibility to submit a correct abstract. Any error in spelling, grammar or scientific fact will be reproduced as typed by the author. Once the abstract has been submitted, modified or deleted, the corresponding author will automatically receive an acknowledgement of receipt, modification or cancellation (by email). Abstracts cannot be withdrawn after the abstract submission deadline. The presenting author is responsible for giving the oral or
e-poster presentations if the abstract is accepted. Correspondence regarding the abstracts such as confirmation of submission, notification of acceptance or rejection and instructions for presentation will only be sent to the corresponding author. It is his/her responsibility to forward the information to all
co-authors. The presenting author is required to register for the Congress and pay the registration fee as a condition of presenting the paper.

Abstract Submission

Please, register as an active participant and submit your abstract by filling in the registration form or via e-mail to: kami@agenturakami.sk. 

Final Close of abstracts: February 28, 2025.

Abstract example

Effects of subcutaneously injected Ca Cu EDTA on reproductive performance in New Zealand dairy cows

Hawkins, D.
Frank­lin Vets, Waiuku, New Zealand

Object­ives: To determ­ine the effect of a single 200 mg treat­ment admin­istered 10 days pri­or to mat­ing start date (MSD) on repro­duct­ive per­form­ance in New Zea­l­and dairy cows.

Meth­ods: In sev­en dairy herds from through­out New Zea­l­and cows were strat­i­fied by age and calv­ing date and then ran­domly assigned to either treat­ment or con­trol groups. Treat­ment cows were injec­ted S/C with 200 mg Cu 10 days pri­or to mat­ing start date (MSD). Con­trol cows received no treat­ment. Oes­trus detec­tion and arti­fi­cial insem­in­a­tions were car­ried out for ≥24 days from MSD. Preg­nancy dia­gnos­is was per­formed at 12 weeks fol­low­ing MSD. The per­cent­age of cows insem­in­ated in the 21 days after MSD (21-day sub­mis­sion rate; n=2,022) and cows preg­nant after 21 or 28 days (21- and 28-day preg­nancy rates; n=2520) was determ­ined. This study was fun­ded by Inter­na­tion­al Anim­al Health Products LTD.

Res­ults: Com­pared with Con­trol cows, treat­ing with 200 mg Cu 10 days before MSD reduced 21-day sub­mis­sion (78 vs. 75%; p=0.04) and 21-day preg­nancy rates (47 vs. 43%; p=0.03). For 28-day preg­nancy rates there was a farm by treat­ment inter­ac­tion (p=0.02), with a neg­at­ive effect observed on some, but not oth­er, farms. The decrease in farm preg­nancy rates were not always matched by pro­por­tion­al decreases in sub­mis­sion rates. Inter­val from calv­ing and age were pos­it­ively asso­ci­ated with sub­mis­sion and preg­nancy rates. 

Con­clu­sions: Injec­tion of 200 mg Ca Cu EDTA 10 days pri­or to mat­ing had a neg­at­ive effect on sub­mis­sion and preg­nancy rates. The vari­ab­il­ity in sub­mis­sion rates com­pared to preg­nancy rates sug­gests that more than one mech­an­ism may be respons­ible for the observed effects. Fur­ther study is required to determ­ine a safe treat­ment to mat­ing inter­val and the mech­an­ism by which adverse impacts occur. Although 200 mg of Cu as Ca Cu EDTA is an effect­ive sup­ple­ment, determ­in­ing the neces­sity for, and the tim­ing of, par­enter­al Cu sup­ple­ment­a­tion is imper­at­ive to avoid neg­at­ive impacts on herd repro­duct­ive performance.