Semen quality parameters in outbred male mice from four different selected lines (original) (raw)

Semen quality parameters in outbred male mice from four different selected lines. Breeding of (outbred) selective lines of laboratory mouse was initiated in Warsaw University of Life Sciences about 40 years ago. It bred Heavy (C) and Light (L) mice selected opposite for body weight at weaning (21st day of life), S mice line selected for higher testes weight, and control (K) mice without selection. All lines have identical genetic background, but different directions of selections caused diversi cation of speci c phenotypic traits between them. The purpose of this study was to compare semen quantity and quality parameters in outbred C, K, L and S male mice in the context of measurements of average body and testes weight for each line. Research materials were seminal uids squeezed out of the vas deferens from 20 outbred C, K, L and S male mice (5 males per group). Animals had been euthanized, and necropsy was performed. Body and testes weight was measured. Also sperm concentration, vi...