Fertility parameters of dairy cows with cystic ovarian disease after treatment with gonadotrophin-releasing hormone

G.A. Hooijer, M.A.A.J. van Oijen, K. Frankena, M.M.H. Valks

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

Fertility data were collected every four weeks for 10 years from 40 herds of Holstein-Friesian dairy cattle. The data collected during 925 lactations from cows with cystic ovarian disease which were treated with 500 μg gonadorelin were compared with data from a control group of 13,869 normal lactations. The intervals between parturition and first insemination and between parturition and conception were significantly shorter (P<0.001) in the normal cows, but the interval between first insemination and conception was not. The overall conception rate tended to be higher (P<0.10) in the normal cows, but the conception rate after the first insemination was significantly higher (P<0.001) and the number of services per conception was significantly lower (P=0.008) in the normal cows.
Original languageEnglish
Pages (from-to)383-386
JournalVeterinary Record
Volume149
Issue number13
DOIs
Publication statusPublished - 2001

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