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22. Acute progesterone administration regresses persistent dominant follicles and improves fertility of cattle in which estrus was synchronized with melengestrol acetate. Anderson LH, Day ML. J Anim Sci; 1994 Nov; 72(11):2955-61. PubMed ID: 7730191 [Abstract] [Full Text] [Related]
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26. GnRH treatment at artificial insemination in beef cattle fails to increase plasma progesterone concentrations or pregnancy rates. Perry GA, Perry BL. Theriogenology; 2009 Mar 15; 71(5):775-9. PubMed ID: 19004487 [Abstract] [Full Text] [Related]