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Time of insemination, breeding efficiency and sex ratio in cattle

, : Time of insemination, breeding efficiency and sex ratio in cattle. Arsberetn. Inst. Sterilitetsforsk. K. Vet.-og Landbohojsk, 155-160

Conception rates of 6639 and 2598 cows and heifers which were inseminated before and after ovulation resp. averaged 59.1 and 44.3% resp. Inseminations carried out before ovulation resulted in 5% more than calves, whereas there were 3% more calves when insemination took place after ovulation.


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