**1. Introduction**

[67] Evenson DP, Larson KL, Jost LK. The sperm chromatin structure assay (SCSA): clinical use for detecting sperm DNA fragmentation related to male infertility and comparisons

[68] Garrett C, Baker HW. A new fully automated system for the morphometric analysis of

[69] Beletti ME, Costa LF. A systematic approach to multi-species sperm morphometrical characterization. Analytical and Quantitative Cytology and Histology 2003; 25: 97–107.

[70] Acevedo NJ, Bame H, Kuehn LA, Hohenboken WD, Evenson DP, Saacke RG. Sperm chromatin structure assay (SCSA) and sperm morphology. In: Proceedings of the 19th Technical Conference on Artificial Insemination and Reproduction, National Associa‐

[71] Arruda RP, de Andrade AFC, Peres KR, Raphael CF, Nascimento J, Celeghini ECC. Biotécnicas aplicadas à avaliação do potencial de fertilidade do sêmen equino. Revista

with other techniques. Journal of. Andrology 2002; 23: 25-43.

16 Success in Artificial Insemination - Quality of Semen and Diagnostics Employed

human sperm heads. Fertility and Sterility 1995; 63: 1306-1317.

tion of Animal Breeders, Columbia, MO, p. 84–90, 2002.

Brasileira Reprodução Animal 2007, 31 (1) 8-16.

Artificial insemination in pig offers many advantages in swine production in terms of a better disease control through semen quality control, a diverse male genetic distribution and an easiness of management. It is accepted that in developing countries, AI helps to improve the genetic profile. A number of sows can be inseminated using the same ejac‐ ulate instead of only one from natural mating. The number of pig farms using AI has increased because of the technical improvement of semen extenders and equipments, and the technique can be performed on farm. In Thailand, AI in commercial pig farms is routinely used as a standard protocol in pig production. The results obtained by AI are quite similar or higher than that from natural. Because of the quality of insemina‐ tion can be guaranteed by semen testing and evaluation before insemination. The im‐ provement of semen quality can be acquired by feed supplement and semen freezing in boar can be used to genetic conservation. The feed supplement improving the semen quality have been imperatively used in the boars which have low libido and low se‐ men quality, because these boars have been imported and are of superior genetic merit and so are perceived to have great value to their owners who, therefore, are very reluc‐ tant to cull them. Moreover, in tropical countries, cryopreservation of boar semen is nowadays performed in a limited scale and it has yet to be conducted in Thailand par‐ ticularly for the commercial purpose. Concerning this point and obtained benefit in the future, the improvement of boar semen quality by feed supplement and boar semen cryopreservation are reviewed in this chapter.

© 2013 Techakumphu et al.; licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2013 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
