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Reports of Agricultural Experiment Stations, U.S.A. Details of the titles of these reports and of relevant papers contained in them will be found in Index Veterinanus.,

The oestrous cycle in 7, 800 cows varied from 20-21 days. In East-Flanders the conception rate was 61%. The most fertile of 16 bulls fertilized 86% of 111 cows, the least fertile 37% of 62 cows. The most fertile bulls fertilize nearly all healthy cows at the first mating. The season and feeding...

Vlaams Diergeneeskundig Tijdschrift, 1951, 20, pp 33-46

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