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Abstract

Tables are presented showing the number of cows inseminated in 1964-66, the av. N.R. rate, the number of bulls used for A.I., the ratio of ♂♂ to ♀♀ and the number of inseminated cows per bull in 43 countries in Europe, America, Asia, Africa, and in Australia and New Zealand; similar data are...

Author(s)
BONADONNA, T.
Citation
Zootechnia, 1969, 18, pp 207-226
Abstract

The results are reported of an enquiry carried out in 1967 in which information on A.I. in livestock was obtained from 24 countries in Europe, 10 in the Americas, 6 in Asia, 3 in Africa and 2 in Oceania. For various reasons, not all the data were equally reliable or complete. Data are tabulated for ...

Author(s)
BONADONNA, T.
Citation
British Veterinary Journal, 1969, 125, pp 518-528