
%0 Journal Article
%A Gooneratne, Anoma 
%A Hartmann, PE 
%A McCauley, I 
%A Martin, CE 
%T Control of Parturition in the Sow Using Progesterone and Prostaglandin
%J Australian Journal of Biological Sciences
%D 1979/12/01
%V 32
%N 6
%P 587-596
%K 
%R https://doi.org/10.1071/BI9790587
%U https://www.publish.csiro.au/paper/BI9790587 
%X The effect of progesterone and prostaglandin administration on the timing of farrowing was studied in three groups of 25 sows each .. Progesterone treatment (100 mg/day) on days 112, 113 and 114 of gestation (group I) significantly prolonged the gestation length to 116 A±0·4 (mean±s.e.) days compared to the control sows (group III; 115·5 ±O· 2; P < 0 ·05). Administration of prostaglandin (200 I1g Cloprostanol intramuscularly) on day 115 of gestation following progesterone treatment (group II) resulted in a gestation length of 116 ·0 ±0·1 days, with the sows farrowing 25 ·4± 1 ·0 h after the prostaglandin injection. 80 % of the sows farrowed between 0800 and 1700 h of day 116 of gestation. 
