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Factors associated with prolonged farrowing duration in sows

Abstract The present study was conducted to investigate the effect of parity number, gestation length, litter size and average piglets’s birthweight on the prolonged farrowing duration (PFD, farrowing duration ≥5h) in sows. Data were collected from 981 sows raised at 17 farms in 6 provinces in the North of Vietnam. Univariate logistic regression models were......