Reproduction in Domestic Animals

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Nature 385, 810–813.Woods GL, White KL, Vanderwall DK, Li GP, Aston KI,Bunch TD, Meerdo LN, Pate BJ, 2003: A mule cloned fromfetal cells by nuclear transfer. Science 301, 1063.Zhang JJ, Boyle MS, Allen WR, Galli C, 1989: Recent studieson in vivo fertilization of in vitro matured horse oocytes.Equine Vet J 8, 101–104.Author’s address (for correspondence): Cesare Galli, Laboratorio diTecnologie della Riproduzione, CIZ srl, Via Porcellasco 7 ⁄ f, 26100Cremona, Italy. E-mail: cesaregalli@ltrciz.itConflict of interest: All authors declare no conflict of interests.Ó 2008 The Authors. Journal compilation Ó 2008 Blackwell Verlag