Abstract:

Effect of injecting sows with prostaglandin F_2-alpha immediately postpartum on subsequent reproductive performance

WE Morgan Morrow, PhD; Jack Britt, PhD; Austin Belschner, DVM; Gerry Neeley DVM; and Julia O'Carroll, DVM

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At a North Carolina farm, 750 females received either none (control), one, or two injections (each 2 mL 10 mg PGF_2-alpha) of Lutalyse(R) after farrowing. Sows were injected at 7 am or 5 pm on the day of farrowing and 24 hours later if they received two doses. Injections of Lutalyse(R) tended to increase the piglet average weight at weaning, 0.29 lb (0.13 kg) for one injection (P=.10), and 0.3 lb (0.14 kg) for two injections (P=.09) compared to piglet average weight for control sows. Neonatal mortality decreased 19% (P=.04) for two injections. Lutalyse(R) had no effect on the incidence of disease in sows during lactation, in the sows, wean-to-service intervals, or their survival.

Keywords: prostaglandin F-2-alpha, performance, Lutalyse

Cite as: Morrow WEM, Britt J, Belschner A, et al. Effect of injecting sows with prostaglandin F_2-alpha immediately postpartum on subsequent reproductive performance. J Swine Health Prod 1996;4(2):73-78.

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