[Low pregnancy rate and small litters after artificial insemination].
D000818:Animals; D004285:Dogs / Q000502:physiology*; D004972:Estrus Detection; D005260:Female; D007315:Insemination, Artificial / Q000379:methods / Q000502:physiology / Q000662:veterinary*; D008098:Litter Size / Q000502:physiology; D008297:Male; D011247:Pregnancy; D018873:Pregnancy Rate; D011863:Radioimmunoassay / Q000662:veterinary; D012307:Risk Factors; D013997:Time Factors