Abstract
The aim of this work was to analyse the effect of incubation dimethyl sulfoxide (DMSO) with insemination dose (ID) on reproduction parameters (kindling rate, number of live and still-born kits and birth weight of kits). The experiments were carried out under the conditions of two rabbit breeds. An ejaculate was diluted to concentration of 40 to 50 million/0.5 ml/ID. DMSO was added to the ID in concentration of 0.5 M DMSO. Control ID did not contain any DMSO. Kindling rates obtained from 2 different breeds (P1, P2) showed minor improvement (+4.36% P1; +4.06% P2) between the monitored groups of females, however without statistically significant differences. Number of live born kits in litter obtained from breeds P1 and P2 showed minor improvement (+0.61 pcs P1; +0.13 pcs P2) compared to the control groups (p>0.05). The weight of live born kits was higher in experimental groups (+3.85 g P1 = p≤0.001; +1.18 g P2 = p>0.05) compared to the control groups. Monitoring of sperm quality indicators (1, 3 and 6 hours incubation) in vitro conditions (CASA – Computer Assisted Semen Analyzer) showed the best results in the control group of non-affected DMSO. The data obtained from our experiments suggest the possitive effects of DMSO incubation on reproduction parameters especially in vivo.
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