Pregnancy rates in cattle with cryopreserved sexed sperm: effects of sperm numbers per inseminate and site of sperm deposition

Animal Reproduction Science
G E Seidel, J L Schenk

Abstract

In six field trials, doses between 1.0 and 6.0 x 10(6) total sexed, frozen-thawed sperm were inseminated into the uterine body or bilaterally into the uterine horns of heifers and nursing Angus cows 12 or 24h after observed estrus. Except for one comparison in one trial in which uterine body insemination was slightly superior (P<0.05) to uterine horn insemination, there was no significant (P>0.1) difference between sites of semen deposition. Additionally, except for one small study with limited numbers, there was essentially no difference in pregnancy rates in the range between 1.5 and 6 x 10(6) sexed, frozen-thawed sperm per inseminate. Pregnancy rates with smaller doses of sexed sperm averaged about 75% of controls of 20 x 10(6) total frozen-thawed, unsexed sperm. While 1.0 x 10(6) sexed, frozen-thawed sperm per insemination dose resulted in decreased pregnancy rates compared to larger doses, the lesser fertility with sexed sperm could not be compensated by increasing sperm numbers in the range of 1.5-6 x 10(6) sperm per dose. Pregnancy rates with 2 x 10(6) sexed, frozen-thawed sperm per dose were not markedly less than control pregnancy rates with 20 x 10(6) frozen-thawed unsexed sperm/dose in well-managed herds.

References

Mar 29, 2000·Theriogenology·J L SchenkG E Seidel
Mar 29, 2000·Theriogenology·G E SeidelD G Cran
Jan 23, 2003·Reproduction : the Official Journal of the Society for the Study of Fertility·George E Seidel, Duane L Garner
Aug 30, 2005·Theriogenology·T K SuhG E Seidel

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Citations

Apr 22, 2010·Tropical Animal Health and Production·Miguel MelladoFrancisco G Ríos
Jul 26, 2012·Tropical Animal Health and Production·Román Espinosa-Cervantes, Alejandro Córdova-Izquierdo
Nov 5, 2013·The Veterinary Clinics of North America. Food Animal Practice·George E Seidel
Dec 14, 2011·Animal Reproduction Science·José Henrique E DominguezFabio José C Faria
Oct 28, 2008·Theriogenology·H HayakawaY Aoyagi
Nov 4, 2008·Theriogenology·S P de GraafW M C Maxwell
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Sep 23, 2008·Reproduction in Domestic Animals = Zuchthygiene·J M VazquezE A Martínez
May 3, 2018·Animal : an International Journal of Animal Bioscience·M G Diskin
Apr 11, 2018·Animal : an International Journal of Animal Bioscience·S A Holden, S T Butler
Jul 4, 2016·Reproduction, Fertility, and Development·Shauna A HoldenSean Fair
Jan 19, 2019·Reproductive Medicine and Biology·Yousuke NaniwaKyoko Uchiyama
May 22, 2017·Tropical Animal Health and Production·Lian-Ben ChangShinn-Chih Wu
May 1, 2021·Animals : an Open Access Journal From MDPI·Andra-Sabina Neculai-Valeanu, Adina Mirela Ariton
Aug 19, 2021·Reproduction in Domestic Animals = Zuchthygiene·Ramanathan KasimanickamKamron Ratzburg
Sep 1, 2021·Scientific Reports·Sven ReeseSabine Kölle

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