Effect of piggery microclimate on ejaculate performance of artificial insemination boars [Mikro klima ıklim şartlarının erkek damızlık domuzlardaki ejekulasyon kalitesine etkileri]

The study was carried out on 1913 ejaculates collected from 51 landrace boars. the ejaculates were collected manually. the study included all ejaculates collected by one artificial insemination station over a span of 12 consecutive months. the ejaculates were subjected to the standard analysis which involved: ejaculate volume,sperm concentration,percentage of progressive motility spermatozoa,total number of spermatozoa,and number of artificial insemination doses per ejaculate. temperature,relative air humidity,and atmospheric pressure in the piggery were monitored during the semen collections. the resulting data were grouped by air temperature,humidity and pressure,and analyzed. it has been found that the microclimate in the place of semen collection may affect the quality of the collected semen. this effect is varied; temperature,humidity and atmospheric pressure act differently in relation to the semen traits. temperature and atmospheric pressure have an effect on sperm concentration. ejaculates with the highest sperm concentrations were collected at the lowest measured temperatures (10°c and lower) as well as with the lowest relative air humidity. sperm motility revealed a strict and oriented relationship with both temperature and humidity,but also with atmospheric pressure. semen collected at the lowest air humidity (50% and lower) and at the lowest observed atmospheric pressure (below 900 hpa) contained the most sperm. the highest number of artificial insemination doses are produced from ejaculates collected in such conditions. © 2016,veteriner fakultesi dergisi. all rights reserved.