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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

A method of herd analysis developed at Jena involves the use of an insemination index derived from the total number of inseminations divided by the number of pregnancies reported. In 1959 this method was used to analyse data on 21, 228 artificially inseminated and 5903 naturally mated cows in...

Author(s)
CONRADI, H.
Citation
Zuchthygiene, Fortpflanzungsstorungen und Besamung der Haustiere, 1961, 5, pp 50-58
Abstract

Among the various methods discussed, the 3 considered most useful are the non-return method, the " herd analysis " method [see A. B. A., 27, No. 1344] and the Conradi method [see No. 1716]. A comparison was made between the 2nd and 3rd methods, the 2 which have been used recently in Eastern...

Author(s)
EBERTUS, R.
Citation
Monatshefte fur Veterinarmedizin, 1961, 16, pp 249-254