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. 1978 Sep 1;19(3):354–367. doi: 10.1186/BF03547605

Incidence of Infertility in Dairy Cows

Infertilitetsfrekvensen hos ko

K Roine 14,24,✉, H Saloniemi 14,24
PMCID: PMC8366348  PMID: 569430

Abstract

The incidence of anoestrus, suboestrus, delayed ovulation, cystic ovaries, repeat breeder cows, endometritis and other forms of infertility was studied in 283 herds over a period of eight years (2,304 cases). The total incidence of infertility (0.111 cases per cow per year) varied significantly from year to year. The peak of the seasonal variation occurred in December-April and did not correspond with the seasonal variation in calving. Both the size of herd and the type of housing affected the incidence of infertility, but the differences were great in respect of the various diagnoses. The incidence of ketosis by herd correlated significantly with the incidence of infertility by herd.

Keywords: disease incidence, infertility, herd size, housing type, dairy cows

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