Virtual Conference

Gyula Lakatos

University of Veterinary Medicine Budapest, Hungary

Title: The effects of three different commercial feed additives on the reproductive performance of sheep during the winter mating period


Certain vitamins and minerals have a key role preserving animal health and productivity in livestock animals. 
The aim of our experiment was to find out, whether different commercial feed additives, have different effect on sheep reproductive performance during winter mating period.
To be able to define this, we chose the three following parameters to be compared: time distribution of registered mating events during the mating period, overall number of registered mating events, and pregnancy rate. 
The research was carried out in a BMC breed herd in Hungary. The ewes participating in the experiment were divided into three groups, with each group having only one ram in it. 
In the first group we administered a solution containing ß-carotene and metil-metionin (n=46), in the second group licking bowl containing ß-carotene and minerals (n=43), in the third group licking bucket containing humic-acid (n=48). 
Mating events were recorded daily. Ultrasound pregnancy test was carried out 51 days after ram removal from the groups.
There were significant differences in the distribution of the registered mating events (p<0.0001), and in the pregnancy rates too (p<0.01). There was a tendency in the total number of ewes mated between the three groups, but it was not significant (p=0.19).
The results show, that choosing the optimal commercial feed additives can be beneficial to the reproductive performance in sheep herds.


Gyula Lakatos has graduated in veterinary medicine in 2020 at University of Veterinary Medicine Budapest. From 2020 he has been working as an official vet at the County Government Office of Hajdú-Bihar County in Hungary and as a veterinary practician in the large animal sector. He started his PhD studies in 2021 at University of Veterinary Medicine and started publishing in 2023.