Influence of PMSG antiserum on serum progesterone and estrous cycles of PMSG-treated gilts

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1992 English Publisher:Canadian Science PublishingJournal:Canadian Journal of Animal Science, volume 72, pages 173-176 (issn: 0008-3984, eissn: 1918-1825,

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Authors: R. N. Kirkwood; P. A. Thacker;

doi: 10.4141/cjas92-021

Influence of PMSG antiserum on serum progesterone and estrous cycles of PMSG-treated gilts

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Abstract

Forty-seven prepubertal gilts (88.4 ± 0.9 kg) received an injection of 750 IU PMSG to stimulate ovarian activity. After 96 h, 23 gilts received an injection of an anti-PMSG serum. Blood samples were obtained at the time of PMSG injection (day 0) and at 2, 4, 6, 11, 18, 25 and 32 d. There was no effect of treatment on serum estradiol concentrations or on the occurrence of normal estrous cycles. However, luteal phase serum progesterone concentrations were higher (P < 0.01) in gilts receiving the anti-PMSG. Key words: PMSG, antiserum, gilts, ovulation

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