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Control of oestrus in gilts. II. Synchronization of oestrus with a progestagen, altrenogest (Regumate): effect on fertility and litter size

Control of oestrus in gilts. II. Synchronization of oestrus with a progestagen, altrenogest (Regumate): effect on fertility and litter size

Animal Reproduction Science 22(3): 227-233

After 1st ovulation, at an av. age of 173 days, 244 gilts were given 20 mg of a progestogen (Regumate) per day in the diet for 18 days. 281 control gilts had the same diet without Regumate. 96% of Regumate-treated gilts were in oestrus 4-7 days after the end of treatment. 97.3% of control gilts returned to oestrus after a normal oestrous cycle of 17-25 days. Gilts were inseminated twice at an interval of 24 h with 6 x 109 spermatozoa per dose.

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Accession: 001787071

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DOI: 10.1016/0378-4320(90)90063-l

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