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Fertilization and embryonic mortality rates in beef heifers after artificial insemination
Reproduction · 1980 · Vol. 59(2) · pp. 463–468
M.G. Diskin✉(Agricultural Institute)J.M. Sreenan(Agricultural Institute)
Abstract
A total of 256 beef heifers, in 2 experiments, was used to establish fertilization rate and subsequent embryo survival rates. Fertilization rate following a single artificial insemination was 90%. Pooled estimates of embryo survival showed high survival rates up to Day 8 (93%) but markedly reduced (P < 0.001) survival at Days 12 (56%), 16 (66%) and 42 (58%). It is suggested that most embryonic mortality occurs between Days 8 and 16.
Reproductive Physiology in LivestockHuman fertilizationArtificial inseminationInseminationAndrologyBiologyReproductionBeef cattleAnimal sciencePregnancyMedicine
MeSH terms
AnimalsCattleCattle DiseasesFemaleFertilizationFetal DeathInsemination, ArtificialPregnancyTime Factors
Citations
323
FWCI
17.59
field-weighted impact
References
23
Percentile
99%
vs. same field & year
Citations per year
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