A PRRS-mentesítés során alkalmazott teljes állománycsere hatása a magyarországi vágósertés-előállításra

Abstract

Background: During the PRRS eradication, which was successfully implemented in Hungary between 2014 and 2022, the most frequently used approach was the complete depopulation-repopulation. During this process, the infected herds were replaced by pig populations being free not only of PRRSV, but also of other infectious swine diseases (mycoplasmosis, actinobacillosis, atrophic rhinitis, scabies, etc.) and having a better genetic capacity. Objectives: The aim of this study was to investigate the impact of the complete depopulation-repopulation approach on slaughter pig production during the PRRS eradication in Hungary between 2014 and 2022. Materials and Methods: The authors analyzed the change in the total carcass weight of slaughter pigs per sow per year, production parameter during the PRRS eradication period in Hungary between 2014 and 2022, in which process the most frequently used approach (in 94% of the originally PRRSV infected farms) was the depopulation-repopulation. Results and Discussion: The annual number of slaughter pigs per sow was 17.09 and total live weight of slaughter pigs per sow per year was 2417 kg in 2014, the starting year of the eradication, which rose to 26.12 pigs (+53%) and to 3238 kg (+51%) by 2022, the final year of the program. The annual carcass weight of slaughter pigs per sow rose from 1728 kg to 2647 kg (+53%) between 2014 and 2022. These results suggest that the swine producers should consider complete depopulation-repopulation of their herds at certain intervals to improve the production parameters and, ultimately, the profitability of their farms.