FACTORS ASSOCIATED TO OBSTETRICAL DISEASES OF  COMMERCIAL SOWS IN SOUTHERN VIETNAM

Nguyễn Văn Trọng; Nguyễn Ngọc Đỉnh; Nguyễn Văn Thái; Nguyễn Quốc Hiếu

doi:10.34238/tnu-jst.13024

FACTORS ASSOCIATED TO OBSTETRICAL DISEASES OF COMMERCIAL SOWS IN SOUTHERN VIETNAM

About this article

Received: 09/06/25 Revised: 30/10/25 Published: 31/10/25

Authors

1. Nguyen Van Trong , Tay Nguyen University
2. Nguyen Ngoc Dinh, Tay Nguyen University
3. Nguyen Van Thai, Tay Nguyen University
4. Nguyen Quoc Hieu, Tay Nguyen University

Abstract

In this study, a total of 683 sows from industrial farms in Southern Vietnam were monitored from mating to farrowing to identify obstetric disorders and associated risk factors. Multivariable logistic regression models were conducted to determine the factors associated, while structural equation modeling was used to explore potential causal relationships. The results showed that stillbirth was the most prevalent disorder (19.47%), followed by dystocia (6.44%), mastitis (3.51%), and metritis (3.22%). The lowest prevalence was observed in retained placenta (1.02%) and postpartum paralysis (0.15%). Risk factors for stillbirth included housing in enclosed systems (OR = 0.06), the number of piglets born per litter (OR = 1.12), and dystocia (OR = 3.71). Dystocia was significantly associated with the sow’s body weight at mating (OR = 1.07). Increased body weight of sows at mating was also identified as a risk factor for mastitis (OR = 1.20). Enclosed housing was associated with a reduced risk of metritis (OR = 0.07), whereas dystocia significantly increased the risk (OR = 55.96). Factor related to retained placenta was dystocia (OR = 35.51). The study highlighted the close interrelationships among various obstetric disorders in sows.

Keywords

Stillborn; Dystocia; Metritis; Risk factors; Causal pathways

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DOI: https://doi.org/10.34238/tnu-jst.13024

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