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The development of A.I. from 1963 to 1966 is described. In this period, the percentage of cows inseminated rose from 81.1 to 89.1. In 1966, approx. 2368 million first inseminations were carried out with semen from 1766 bulls. The 90-day N.R. rate averaged 68.2%. The milk yield of cows sired by 1441 ...

Pilz, K.
Monatshefte fur Veterinarmedizin, 1967, 22, pp 681-684

The total cattle population increased by 0.6% to 14, 061 million. The number of herdbook-registered animals was down by 1.9% to 925, 504, composed of 500, 407 German Black Pied, 187, 228 German Red Pied, 159, 171 German Simmental, 32, 863 German Brown, 19, 049 Angeln, 7881 German Yellow, 5256...

Arb. ArbGemeinsch. dt. Rinder-zuchter., 1969, 39, pp 35 + [95] pp.