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Abstract

Various methods of calculating conception rates following A.I., involving pregnancy diagnosis by clinical methods, the non-return method and the "herd analysis" method [see A. B. A., 27, No. 1344], are compared, using data from the Hanichen A.I. Station for the years 1954-58.

Author(s)
JENICHEN, W.; SCHAFER, W.; DEX-HEIMER, J.
Citation
Tierzucht, 1961, 15, pp 13-16; 54-56
Abstract

The enormous expansion of A. I. in recent years in the German Democratic Republic (1, 446, 483 first inseminations in 1958) has made pregnancy diagnosis by veterinarians impossible. A method of assessing A. I. results other than the non-return method is proposed, called " herd analysis ". This...

Author(s)
JENICHEN, W.; ZELFEL, S.
Citation
Tierzucht, 1959, 13, pp 158-163