PMID: 11913584Mar 27, 2002Paper

Effect of deposition site and sperm number on the fertility of sheep inseminated with liquid semen

The Veterinary Record
Heiko PaulenzKjell Andersen Berg

Abstract

The effect of the deposition site and the numbers of sperm on the fertility of sheep was tested in a field trial in which 1292 Norwegian crossbred ewes aged between six months and five-and-a-half years from 52 farms were inseminated with liquid semen after natural oestrus. Cervical insemination with 150 x 10(6) and 75 x 10(6) spermatozoa resulted in 25-day non-return rates of 63.7 and 56.1 per cent, and vaginal insemination gave non-return rates of 63.3 and 56.6 per cent, respectively. There was no significant difference between the cervical and vaginal inseminations, but the inseminations with 150 x 10(6) spermatozoa gave significantly higher non-return rates (P=0.004). There were significant differences between the non-return rates for different rams (P<0.0001) and farmers (P=0.0002) but the age of the ewe had no significant effect.

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Citations

Jun 13, 2008·Cell and Tissue Banking·J P Barbas, R D Mascarenhas
Feb 1, 2008·Animal : an International Journal of Animal Bioscience·L S EikjeG Klemetsdal
Jun 4, 2010·The Journal of Reproduction and Development·Yutaka FukuiHiroyuki Watanabe
Apr 11, 2007·The Journal of Reproduction and Development·Yutaka FukuiMami Hiwasa
Apr 15, 2008·The Journal of Reproduction and Development·Yutaka FukuiKentaro Okabe
Nov 11, 2008·The Journal of Reproduction and Development·Mami HiwasaYutaka Fukui
Jun 6, 2012·Animal Reproduction Science·I PalacínP Santolaria
Apr 10, 2012·Animal Reproduction Science·Lorraine RichardsonPat Lonergan
Jul 4, 2008·Theriogenology·C López-FernándezJ Gosálvez
Mar 10, 2010·Reproduction in Domestic Animals = Zuchthygiene·A E M HortaS Cavaco-Gonçalves
Nov 21, 2008·Reproduction in Domestic Animals = Zuchthygiene·A B NordstogaH Paulenz
Oct 29, 2010·Reproduction in Domestic Animals = Zuchthygiene·J Olivera-MuzanteJ Gil
Mar 1, 2012·Acta Veterinaria Hungarica·Vera FaiglSándor Cseh
Nov 10, 2020·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Md Mahmodul Hasan SohelMehmet Ulas Cinar
May 10, 2021·Reproduction in Domestic Animals = Zuchthygiene·Niyazi KüçükMelih Aksoy

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