Predisposition to repeat breeding in UK cattle and success of artificial insemination alone or in combination with embryo transfer

The Veterinary Record
S CanuH Dobson

Abstract

To investigate whether there was a subpopulation of repeat breeders (cows or heifers that returned to oestrus after three inseminations) that were less fertile after a fourth artificial insemination (AI) with or without additional embryo transfer, and to estimate the efficacy of AI plus embryo transfer to overcome repeat breeding problems, a two-part investigation was carried out. Part 1 involved 85 repeat breeders and 85 controls subjected to AI alone. In part 2, 128 repeat breeders received AI on day 0 plus an embryo transfer seven days later, while controls received embryo transfer alone on day 7. In repeat breeders, the interval between calving and pregnancy was 80 days longer than in the controls (P=0.01), irrespective of previous fertility treatment which had mainly focused on the ovaries. The incidence of dystocia was similar in repeat breeders and in controls, but repeat breeders had a higher previous incidence of moderate uterine infection compared with controls (P=0.04). In repeat breeder cows, pregnancy rates for AI alone were 30 per cent after the fourth AI (controls: 45 to 64 per cent after one to three inseminations) compared with 52.6 per cent after a fourth AI with embryo transfer (controls with embryo transfer ...Continue Reading

References

Nov 1, 1978·Journal of Reproduction and Fertility·N Ayalon
Feb 1, 1983·Journal of Dairy Science·J S StevensonE P Call
May 1, 1983·Journal of Animal Science·R R Maurer, J R Chenault
Oct 31, 1981·The Veterinary Record·J F RocheT A McGeady
Jul 1, 1997·The Veterinary Journal·M A Kossaibati, R J Esslemont
Jan 1, 1999·The Veterinary Record·G Brooks
Feb 28, 2001·Reproduction : the Official Journal of the Society for the Study of Fertility·K J DemmersA Flint
Jun 19, 2002·Preventive Veterinary Medicine·N MossD R Hodgson
Aug 14, 2002·Acta Veterinaria Scandinavica·H Gustafsson, U Emanuelson
Sep 6, 2002·Theriogenology·A G Martínez de las Heras
Jul 24, 2004·Animal Reproduction Science·I M Sheldon, H Dobson
Jun 17, 2006·Theriogenology·Ottó SzenciJean-Francois Beckers
Sep 11, 2007·The Journal of Reproduction and Development·Dong-Soo SonIll-Hwa Kim
Aug 1, 2008·Animal : an International Journal of Animal Bioscience·H DobsonR F Smith
Aug 1, 2008·Animal : an International Journal of Animal Bioscience·E J WilliamsI M Sheldon

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Citations

Nov 12, 2013·Journal of Dairy Science·L BonillaP J Hansen
Oct 9, 2020·Animal Reproduction·Hilary DobsonRobert Frank Smith
Jan 15, 2021·Animals : an Open Access Journal From MDPI·Irina Garcia-Ispierto, Fernando López-Gatius
Jan 30, 2021·BMC Veterinary Research·Natsumi FuneshimaKoumei Shirasuna
Jul 13, 2021·Journal of Veterinary Research·Arkadiusz Nowicki

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