Int.J.Curr.Microbiol.App.Sci (2019) 8(9): 1584-1590 1584 Original Research Article https://doi.org/10.20546/ijcmas.2019.809.181 Fresh Semen Characteristics of Large white Yorkshire Boar Semen Selected for Liquid Semen Preservation T. Shylesh 1 *, Hiron M. Harshan 1 , Megha Wilson 2 , K. Promod 1 , A. P. Usha 3 , C. Sunanda 4 and M. P. Unnikrishnan 4 1 Department of Animal Reproduction, Gynaecology and Obstetrics, CVAS, Pookode, India 2 Poultry Division, Brahmagiri Development Society, Sultanbathery, India 3 Centre for Pig Production and Research, Mannuthy, India 4 Department of Statistics, CVAS, Pookode, India *Corresponding author ABSTRACT Introduction Pigs offer a great support to livestock farmers due to their high prolificacy, feed conversion efficiency, short generation interval and smaller capital investment. For ensuring revenue from the venture, the breeding efficiency from the pigs has to be ensured. Though artificial insemination (AI) in pig industry plays a major role in upgradation of species, it is not as popular as in cattle because of limitations of semen quantity required for International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 8 Number 09 (2019) Journal homepage: http://www.ijcmas.com The laboratory examination of semen quality parameters is an indirect way of assessing male fertility. The objective of this research was to study the semen quality parameters of Large White Yorkshire (LWY) boar ejaculates, which had the minimum sperm progressive motility necessary for being selected for further processing. The pigs were maintained at the Centre for pig production and research, Mannuthy, Kerala. A total of 24 ejaculates were collected from seven boars using gloved hand technique. The collected semen was examined for volume, colour, pH, sperm concentration, progressive motility, viability, abnormality, acrosome integrity and functional membrane integrity. Gel free volume differed significantly between boars. There was no significant difference observed in pH, sperm concentration and progressive motility among the seven boars studied. Significantly higher (p<0.05) viable sperms were observed in few boars. Similar observations were noted with respect to sperm abnormality too. Significant differences (p<0.05) were observed in acrosome integrity and hypo-osmotic sperm swelling response among boars. Keywords Progressive Motility, Viability, Abnormality, Acrosome integrity, HOST Accepted: 18 August 2019 Available Online: 10 September 2019 Article Info