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Efficacy of an intravaginal progesterone insert and an injection of PGF2alpha for synchronizing estrus and shortening the interval to pregnancy in postpartum beef cows, peripubertal beef heifers, and dairy heifers.
Lucy MC, Billings HJ, Butler WR, Ehnis LR, Fields MJ, Kesler DJ, Kinder JE, Mattos RC, Short RE, Thatcher WW, Wettemann RP, Yelich JV, Hafs HD. Lucy MC, et al. Among authors: butler wr. J Anim Sci. 2001 Apr;79(4):982-95. doi: 10.2527/2001.794982x. J Anim Sci. 2001. PMID: 11325206
Effect of early postpartum ovulation on fertility in dairy cows.
Galvão KN, Frajblat M, Butler WR, Brittin SB, Guard CL, Gilbert RO. Galvão KN, et al. Among authors: butler wr. Reprod Domest Anim. 2010 Oct;45(5):e207-11. doi: 10.1111/j.1439-0531.2009.01517.x. Reprod Domest Anim. 2010. PMID: 19845883 Clinical Trial.
168 results