RETRACTED: The cryoprotective effect of trehalose supplementation on boar spermatozoa quality

This article has been retracted at the request of the Editor-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).Reason: This article is a duplicate of a paper that has already been published in Reprod. Domest. Anim., volume 44 (2009) 571–575, doi:10.1111/j.1439-0531.2007.00975.x. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper is not under consideration for publication elsewhere. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and we apologize to readers of the journal that this was not detected during the submission process.