Physical characteristics of ejaculates produced by insemination boars depending on the interval between successive ejaculate collections

Physical characteristics of ejaculates produced by insemination boars depending on the interval between successive ejaculate collectionsDownload file
BAJENA, M., KONDRACKI, S., IWANINA, M., WYSOKIŃSKA, A., ADAMIAK, A.PHYSICAL CHARACTERISTICS OF EJACULATES PRODUCED BY INSEMINATION BOARS DEPENDING ON THE INTERVAL BETWEEN SUCCESSIVE EJACULATE COLLECTIONS

2016, 17(2), p.260 - 271, DOI: http://dx.doi.org/10.5513/JCEA01/17.2.1699

Abstract

The ejaculate characteristics of Polish Landrace boars showed a significant correlation with the intervals between the successive ejaculate collections. The effect of insemination use intensity was however varied. Rising frequency of ejaculate collection led to a systematic and fairly even fall in ejaculate volume. Ejaculate sperm concentration remained at a relatively high level when ejaculates were collected with a frequency of 7 to 3 days but further shortening of the interval between the successive collections led to a drastic decrease in sperm concentration. An increase in ejaculate collection frequency to every four and fewer days resulted in a significant decrease in the number of spermatozoa present in the produced ejaculates and a concomitant decrease in the number of insemination doses prepared from these ejaculates, with an escalation of such changes.

Keywords:
boarejaculate qualityejaculation frequency