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Trends in calving rates in Irish dairy herds 1991-1996



Trends in calving rates in Irish dairy herds 1991-1996



Cattle Practice 7(3): 287-290



In the Irish Republic, surveys in the 1970s showed calving rates to first service of 60-69%. Since then, genetic merit and milk yield/cow have increased significantly. The objectives of this study were to determine calving rates in Irish dairy herds for 1991-96. Breeding records for 58 sppring-calving commercial dairy herds maintained on the computerized DAIRYMIS System were analysed. Inseminations were categorized as either DIY AI (DIY), commercial AI (COM) or Natural Service (NAT).

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Accession: 003323561

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