Novotni-Dankó, GabriellaOsotsi, Joab MalandaMotaung, Thabang2025-06-162025-06-162025-05-15https://hdl.handle.net/2437/391831In contemporary commercial piggeries, evaluating the physical condition of the pigs has become one of the most important aspects that needs to be emphasized in order to maximize output targets and achieve the goals. Better welfare for the sows is indicated by optimal body condition, although achieving sufficient output is also necessary, especially in herds with high production levels. Compared to visual grading, backfat thickness evaluation is regarded as a more objective and reliable method of evaluating pig body condition. The overall goal of my research was to assess the relationship of backfat thickness pre-farrowing on sow reproduction parameters across different parities. The focus of the study was in selected farms in Hungary and South Africa. The specific objectives were - - - To establish backfat thickness trends pre farrowing for different sow parities to understand their variations To assess the relationship between backfat thickness pre farrowing and reproductive parameters (live born, stillborn and mummies) To compare the backfat thickness trends and reproduction parameters of sows in South Africa and Hungary. The findings demonstrate the impact of management strategies by showing a wide range of production output variability. The thickness of the backfat varied significantly between sows of different parities, with parity 1 sows displaying a higher backfat. These results suggest that at various phases of parity, particular nutrition and care strategies are needed to optimize sow health and reproduction. Maintaining a healthy physical state that encourages ongoing productivity without running the risk of productivity-related problems may become more important as parity increases. Tailored feeding plans based on parity can enhance herd performance and increase reproduction success. According to the study, backfat thickness shows a significant link with mummified and stillborn piglets but a weak negative correlation with live birth rates. Given the positive association of back fat thickness for mummies and stillbirths, particular care strategies are needed. By focusing on preserving ideal physical conditions, producers can improve their total herd productivity and reproductive performance. 35 The data from the South African herd clears demonstrate the change in BFT from farrowing to weaning . The change in BFT as reflected by data is within accepted ranges reported elsewhere. Both data herds (Hungarian and South African) shows that indeed BFT has an effect on the reproduction a parameter( LB, SB, and Mms). Moreover, the South African herd data reveal the effect of parity on the number of piglets weaned.52enBackfat thicknessLivebornstillbornmummiesreproductionAgricultural SciencesHozzáférhető a 2022 decemberi felsőoktatási törvénymódosítás értelmében.