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Abstract

The author compares the duration of motility of spermatozoa obtained in the common rubber collector and in a collector made of the lining membrane of a cattle paunch. In the latter, spermatozoa kept at 37.7°-38.2° C. were quite active after four hours, while in a rubber collector kept under the...

Author(s)
ELSHIN, M.
Citation
Konevodstvo, 1933, 6, pp 28-29
Abstract

IN order to study the behaviour of spermatozoa in the ♀ tract, 25 ewes were slaughtered at varying intervals after mating. Examination of genital tract gave the following results: [(a) number of spermatozoa in thousands; (b) motility, evaluated by a scale of points; O, oscillatory motion only; N,...

Author(s)
KUZNECOV, M. P.
Citation
Problemy Zhivotnovodstva, 1934, 4, pp 122-125
Abstract

ARTIFICIAL insemination is acquiring importance in Germany, owing to the spread of Trichomonas infection. The method of sperm collection by artificial vagina is recommended. Rectal massage yields sperm with an admixture of urine; the motility of spermatozoa is relatively low and many are immotile....

Author(s)
FEILING, O.
Publisher
Vet. Klinik, Univ. Giessen., Giessen, Germany
Citation
Gewinnung und Unter-suchung von Samen gesunder und kranker Bullen zum Zwecke der künstlichen Besamung des Rindes., 1935, pp 80 pp.
Abstract

THE material consisted of 20 rams of various breeds which yielded 107 ejaculates (collected with the rubber artificial vagina). The volume of the ejaculate ranged from 0.5 to 2 c.c., mean l.0 c.c. ; age and breed of ram appeared to have no influence. The spermatozoa retain their motility longest at ...

Author(s)
SCHOTTLE, R.
Publisher
Inst. Tierzucht, Univ. Leipzig., Germany
Citation
Zur Physiologie des Schaf-bockspermas. (Im Hinblick auf die künstliche Besamung.)., 1936, pp 56 pp.
Abstract

The Laboratory is responsible for routine diagnosis for the departmental field officers and research work on animal disease.
Routine examination was carried out on 9, 030 milk samples and specimens.
At Hamilton Subsidiary Laboratory 42, 615 milk samples were examined.
TUBERCULOSIS.-Biological tests ...

Author(s)
HOPKIRK, C. S. M.
Publisher
N.Z.,
Citation
Report of the Department of Agriculture, 1935-36, 1936, pp 27-83 pp.
Abstract

THE author does not seem to be familiar with the very extensive recent Russian literature on artificial insemination. His own observations refer to 70 ejaculates obtained from 1 Fawn and 5 White German Improved goats. The artificial vagina was found the best method of collection. The volume of the...

Author(s)
MÖCKEL, H.
Publisher
Univ. Leipzig., Germany
Citation
Zur Physiologie des Ziegenbockspermas. (Im Hinblick auf die künstliche Besamung.)., 1937, pp 47 pp.
Abstract

II. Data were collected on length of sperm head, co-efficient of variability of sperm head lengths, ability to live under conditions in which semen is preserved for artificial insemination, number of spermatozoa per c.c. and pH of semen. The pH of sheep semen containing normal numbers of sperm is...

Author(s)
COMSTOCK, R. E.; BRADY, D. E.
Citation
Record of Proceedings. American Society of Animal Production, 1937, pp 233-288 pp.
Abstract

LITERATURE is reviewed. According to the author's own studies there is no correlation between the vaginal smears and the sexual stage. The microscopical pictures of vaginal smears did not give any evidence as to the time of onset of oestrus in 8 Karakul ewes as studied in over 650 preparations. 150 ...

Author(s)
HÖCKER, U.
Citation
Kuhn-Archiv, 1938, 47, pp 27-77
Abstract

THE Secretary for Agriculture and Forestry reports on the role played by agriculture in the national economy, progress with fundamental work, agricultural conditions during the year under review, and appeals to the individual farmer to give due consisderation to the interests of agriculture as a...

Citation
Farming in South Africa, 1939, 14, pp 465-593
Abstract

THE State has now 5 cooperative units for artificial insemination, including about 5500 cows; the original unit, begun in May 1938, has 240 members with 2600 cows. Insemination rate per pregnancy varies for young as well as mature bulls and among bulls with the same semen density and sperm...

Author(s)
BARTLETT, J. W.; PERRY, E. J.
Citation
Record of Proceedings. American Society of Animal Production, 1939, pp 243-245

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