SOWS FERTILITY AFTER TRANSCERVICAL INTRAUTERINE INSEMINATION (the sumarize of ours results) FERTILITATEA SCROAFELOR DUPĂ INSEMINARE INTRAUTERINĂ TRANSCERVICALĂ (rezumatul cercetărilor noastre)

Stančić
2008 unpublished
We have investigated the potential advantages of transcervical artificial insemination into the caudal portion of the uterus (corpus uteri), compared with conventional sperm-dose deposition into the posterior region of the cervix. Three experiments was carried out to investigate: (1) the influence of insemination-dose volume, (2) sperm number per dose and (3) type of insemination catheter on sows fertility (farrowing rate and litter size). Classic intracervical insemination was performed in the
more » ... as performed in the total of 50 sows (25 inseminated with 100ml doses and 25 with 50ml doses). Intrauterine insemination was performed in the total of 50 sows (25 inseminated with 100ml doses and 25 with 50ml doses). Significant greater farrowing rate (88%) and live born piglet per litter (10,77 or 11,86) was found after intrauterine insemination, then after intracervical insemination (76 or 72% farrowing rate, and 10,42 or 9,89 live born piglets per litter). Classic intracervical insemination was performed in the total of 90 sows, with different catheter type. Intrauterine insemination was performed in the total of 90 sows, with 5x10 9 ,3,7x10 9 or 2,5x10 9 spermatozoa per dose. No significant differences in farrowing rate was found between intracervical and intrauterine insemination (83,3 to 86,7%). Significant greater live born piglet per litter was found after intrauterine insemination with 2,5x10 9 spermatozoa per dose. Obtained results suggest that intrauterine insemination can be performed by significant reduction of insemination dose volume and sperm number in dose, without decreasing sows fertility. It can result in significant increasing of boar reproductive efficiency.
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