Induction of Parturition: A Comparison of the Effects of Lutalyse and Estrumate on Sows
Conover, Michelle Lee
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The aim of this study was to determine the efficiency of prostaglandin analogue treatments on the induction of parturition during late pregnancy in sows, based on fewer and less intense side effects. Twenty-four sows were randomly treated on day 114 of gestation with: (1) 175 micrograms Estrumate; (2) 10 mg Lutalyse; (3) 2 ml. saline (control) or on day 115 with 2 ml saline (control). Sows injected with Lutalyse showed a significant increase in position changes/minute as compared to the C114 treatments. L114 treated sows displayed a significant increase in frequency of bar biting compared to the E114, C115, and C114 treatments, and a significant increase in frequency of defecation compared to the C115 and C114 treatment. These results demonstrate that sows treated with Estrumate are likely to have fewer, less intense side effects than sows treated with Lutalyse.