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Of 116 mares inseminated with pelleted frozen semen from 8 stallions, 50% conceived, but only 44% foaled, due to foetal resorption. The poor results can partly be explained by the fact that 29% of the mares had not conceived to natural matings carried out over a period of 2 yr or longer, and 33%...

Treu, H.; Hillmann, K.-H.; Heinze, H.; Klug, E.
Zuchthygiene, 1974, 9, 2, pp 91

In view of the satisfactory insemination of 61 mares in 1972 using frozen semen, resulting in a CR of approx. 60%, it has been decided to open an AI station, initially for a period of 2 yr, at a private stud at Celle in co-operation with the Hannover Breeding Association. Problems of selecting...

Merkt, H.; Klug, E.; Heinze, H.
Zuchthygiene, 1974, 9, 2, pp 90