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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

Semen from 5 German Landrace pigs was diluted and frozen using several methods. Sperm motility after thawing was significantly better using flat straws (1.7 ml) rather than "maxi-straws" (5 ml) for semen storage. The incidence of damaged spermatozoa was higher when centrifugation was done at 5°C...

Author(s)
Ewert, L.
Publisher
Tierärztliche Hochschule Hannover, German Federal Republic
Citation
Versuche zur Vorbereitung von Ebersperma für die Kryonkonservierung in Kunststoffrohren und biologisch-physikalische Aspekte beim Auftauen durch Mikrowellen., 1988, pp 90pp.
Abstract

Split samples of semen from 5 German Mutton Merino rams were used to test various procedures using a basic Tris-fructose-egg yolk-glycerol diluent. In a field trial, 1025 females were inseminated. Addition of glycerol at 5 deg or 22 deg C had no significant effect on post-thawing motility or the...

Author(s)
Mattos, R. C.
Publisher
Tierarztliche Hochschule Hannover., German Federal Republic
Citation
Untersuchungen uber den Einfluss verschiedener kryobiologischen Faktoren auf die Qualitat und Befruchtungsfahigkeit von tiefgefrorenem Schafsperma., 1982, pp 71 pp.
Abstract

Semen doses packaged in French ministraws were thawed for 8 or 25 s in warm water (38 plus or minus 2 deg C). Over a 12-month period, 43 inseminators carried out 87 486 first inseminations. The NR rate was significantly affected by month of insemination, district, inseminator within district,...

Author(s)
Kupferschmied, H.; Gaillard, C.
Citation
Schweizer Archiv fur Tierheilkunde, 1981, 123, 10, pp 515-522
Abstract

The method of preparing and freezing the high-density semen fraction in 2-ml pellets is described. Only ejaculates with a sperm concentration of more than or equal to 800 000/ml were used. Pellets were stored in liquid nitrogen for 1-6 mth. Thawing was either by the dry method or in a thawing...

Author(s)
Kozumplik, J.
Citation
Monatshefte fur Veterinarmedizin, 1980, 35, 11, pp 423-425
Abstract

The photogrammetrically recorded motility of frozen and thawed bull semen (average of 60 ejaculates of 12 bulls) was nearly equal to that of fresh semen stored for 24 h at 4 deg C. Motility of frozen semen and fresh semen decreased nearly similarly during storage for 7 days at 4 deg C. The activity ...

Author(s)
Muller, E.
Citation
Deutsche Tierarztliche Wochenschrift, 1976, 83, 9, pp 393-398
Abstract

Using the routine thawing medium for semen pellets, based on lactose, the 60- to 90-day NR rate to 1st insemination in 300 cows was 68.7% v 72.7 for a similar number of cows inseminated with pellets thawed in a sodium citrate-glucose solution.

Author(s)
Sehr, G.
Citation
Deutsche Tierarztliche Wochenschrift, 1975, 82, 11, pp 441-442
Abstract

A buffer system was prepared, consisting of TES (N-tris(hydroxymethyl)-methyl-2-aminoethanesulphonic acid) (325 m Osm/kg), titrated to a pH of 7.2 with isotonic TRIS, with 20% v/v egg yolk added as a cryoprotective. Recovery of spermatozoa was enhanced by the addition of 0.25-0.50% surface-active...

Author(s)
Graham, E. F.; Crabo, B. G.
Citation
VIIth International Congress on Animal Reproduction and Artificial Insemination, Munich, 1972, Summaries., 1972, pp 324-325
Abstract

Semen was used from 2 German Improved White and 1 German Improved Fawn, aged 1-3 1/2 yr. In two in vitro experiments, 5 modifications of a raffinose-egg yolk-glycerol diluent with different concentrations of raffinose were tested. The diluent showing the best conservation, 65% motility after...

Author(s)
PAGGI.
Publisher
Tierarztl. Hochschule, Hanover, Germany
Citation
Samenübertragung bei Ziegen. XIV. Beitrag. Versuche zur Tief-gefrierung von Ziegenbocksperma., 1971, pp 51 pp.
Abstract

Between 1958 and 1967, 12, 228 first inseminations were carried out, and 50.2% of the 1196 ♀♀ mated in 1967 were inseminated artificially. All inseminations were with semen from German Improved White ♂♂. Semen was collected twice daily every 2nd day from young ♂♂, and twice daily on 2 successive...

Author(s)
GRÜTTEMEIER, H. G.
Publisher
Tierarztl. Hochsch., Hanover, Germany
Citation
Samenüber-tragung bei Ziegen. XIII. Beitrag. Zehn Jahre Ziegenbesamung im Saarland (1958-1967)., 1969, pp 42 pp.

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