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Abstract

In order to increase fertility in modern dairy farming, the interval between first insemination and conception should be as short as possible. Therefore, one approach is to diagnose non pregnant animals early to re-inseminate them as soon as possible. Commercial milk pregnancy assays are available...

Author(s)
Engelke, J.; Feldmann, M.; Gundling, N.; Gundelach, Y.; Egli, C.; Hoedemaker, M.; Piechotta, M.
Publisher
Schlütersche Verlagsgesellschaft GmbH & Co. KG, Hannover, Germany
Citation
Berliner und Münchener Tierärztliche Wochenschrift, 2015, 128, 9/10, pp 402-408
Abstract

During artificial insemination (AI) of sows the stimulation - most effective in presence of a boar - plays an important role. Aim of the present study was to determine whether the simultaneous presence of two boars during AI could lead to an improved stimulation of the sows and, in consequence,...

Author(s)
Zimmer, C.; Hoy, S.
Publisher
Schlütersche Verlagsgesellschaft GmbH & Co. KG, Hannover, Germany
Citation
Praktische Tierarzt, 2013, 94, 11, pp 1008-1015
Abstract

Author(s)
Kerzel, I.
Publisher
Tierärztliche Hoschschule, Hannover, Germany
Citation
Zusammenhänge zwischen Brunstverlauf und Ovulation, sonographische ermittelter Frühträchtigkeit, Abferkelrate und Wurfgrösse in einer Hybridsauenherde nach künstlicher Besamung., 1999, pp 112 pp.
Abstract

On 53 dairy farms, a simple fertility programme was carried out, in which an easily-understandable written record for each cow was left with the farmer. During each visit the veterinary surgeon discussed feeding and other problems and took samples where necessary for further diagnoses. The...

Author(s)
Prinzen, R.; Marzouk, K. M.
Citation
Praktische Tierarzt, 1995, 76, 2, pp 129-132, 135-137
Abstract

Author(s)
Bernhard, P.
Citation
Monatshefte fur Veterinarmedizin, 1979, 34, 17, pp 647-650
Abstract

Author(s)
Scholz, H.; Luttig, J.; Klossek, H.; Oelke, H.
Citation
Monatshefte fur Veterinarmedizin, 1975, 30, 15, pp 576-581
Abstract

Author(s)
Scholz, H.; Luttig, J.; Klossek, H.; Oelke, H.
Citation
Monatshefte fur Veterinarmedizin, 1975, 30, 16, pp 608-612
Abstract

Three groups of 20 heifers from a large herd of doubtful fertility, pregnant to first service, requiring several services or heifers that failed to conceive after artificial insemination but were pregnant after normal service, and 41 stud bulls belonging to an artificial insemination station were...

Author(s)
NESENI, R.; STEGER, H.
Citation
Archiv für Tierzucht, 1969, 12, pp 77-89
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
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

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