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Data are tabulated on the performance of 816 synchronised gilts treated with 1000 IU PMS and inseminated when exhibiting the standing reflex and on 349 gilts with synchronised ovulation (treated with 1000 IU PMS followed by 500 IU HCG 3 days later) and timed insemination (regardless of signs of...

Sieland, W.; Fritzsch, M.; Huhn, U.; Volkel, B.
Tierzucht, 1975, 29, 6, pp 263-267