Effect of pre-partum hCG on farrowing performance of older parity sows & their piglets viability
Investigate whether pre-partum hCG will elevate sow blood oestrogen with downstream effects on farrowing duration and neonatal piglet viability and preweaning growth and survival.
Older sows suffer a disproportional rate of stillbirths, possibly due to inadequate uterine muscle tone. Parturition requires elevated oestradiol which, if limited, may result in poorer contractions with resultant stillbirths.
Key methodology: Sows will be treated at specific times prepartum and the progress of farrowing and piglet viability and preweaning growth and survival monitored.