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Evaluation of fertility in dairy cattle and the effect of herd size on fertility


, : Evaluation of fertility in dairy cattle and the effect of herd size on fertility. Suomen Elainlaakarilehti 86(3): 131-137

Over a period of 2 yr, fertility characters were investigated in 32 herds in Finland, each comprising 4-40 cows. The calving interval averaged 382 days, the interval between calving and 1st insemination 80 days, service period 120 days, and the number of inseminations per conception 1.79. The interval between calving and 1st insemination was significantly correlated with calving interval (0.50), service period (0.73) and the number of inseminations per conception (-0.58).

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