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Animal Science Database

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Abstract

The fertility of bulls at 8 A. I. centres was analysed; it ranged from 48-68% for 1st inseminations, and the over-all average was about 60%. Differences were attributed more to the variations between the bulls than to differences in technique and environment. Similar differences between bulls occur ...

Author(s)
Baier, W.; Haeger, O.; Leidl, W.
Citation
Deutsche Tierarztliche Wochenschrift, 1955, 62, 39/40, pp 117-120
Abstract

In Denmark in 1956 there were 100 A. I. associations; they included 174, 600 herds with 1, 491, 750 cows and 1174 bulls. There were 1, 001, 995 ♀♀ and 779 ♂♂ of the Red Danish, 267, 071 ♀♀ and 180 ♂♂of the Black Pied Danish, 201, 838 ♀♀ and 184 ♂♂ of the Jersey and 20, 846 ♀♀ and 28 ♂♂ of the...

Author(s)
Maarssø, S. A.
Citation
Aarhus: Aarhus Amtstidendes Bogtrykkeri., 1957, pp 226 pp.
Abstract

ADAMS, C. H., and ABTHAUD, V. H. Influence of sex and age differences on tenderness of beef: 1112.
ALLEN, E., FOBBEST, J. C., BRAY, R. W., BBISKEY, E. J., FIBST, N. [L. ], and CHAPMAN, A. B. Porcine muscle properties. II. Heritability and genetic correlations: 1112.
BAKER, R. D., VANDEMABK, N. L.,...

Citation
Journal of Animal Science, 1963, 22, pp 1109-1141
Abstract

ALLAIRE, F. R. Another approach to the regression of yield on a contemporary yield average: 925-926.
ANDRUS, D. F., and FREEMAN, A. E. Age distribution, life expectancy, and culling practices in Iowa dairy herds: 939-940.
ARAVE, C. W., and LAMB, R. C. Effect of blood antigen, serum and milk protein ...

Citation
Journal of Dairy Science, 1969, 52, pp 879-948
Abstract

From February to December 1998 in Estonia, 29 AI Holstein bulls were used to study the effects of age, origin and season on sperm concentration on the incidence of morphological abnormalities, sperm motility and intactness of plasma membrane in fresh semen. The highest percentage of sperm...

Author(s)
Padrik, P.; Jaakma, Ü.; Müürsepp, I.
Citation
Agraarteadus, 2000, 11, 1, pp 71-80
Abstract

A field trial was conducted on 3 dairy farms in Uruguay to determine the factors affecting reproductive efficiency in a seasonal breeding AI programme in dairy herds. 328 lactating cows intended to be bred at the following breeding period were selected and the trial started one week before the...

Author(s)
Cavestany, D.; Galina, C. S.
Publisher
Blackwell Wissenschafts-Verlag GmbH, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2001, 36, 2, pp 85-89
Abstract

In the present work, we examined the effects of age, breed, and season on qualitative parameters of sperm from 45 boars bred by artificial insemination. Boars were assigned to the groups according to their age (young, 10 to 18; 18 to 24; 24 to 30; 30 to 36 month of the age and older, over 36 months ...

Author(s)
Šernienė, L.; Riškevičienė, V.; Banys, A.; Žilinskas, H.
Publisher
Lietuvos Veterinarijos Akademija, Kaunas, Lithuania
Citation
Veterinarija ir Zootechnika, 2002, No.17, pp 56-60
Abstract

This study was conducted to introduce small-sized prolific Garole germplasm into medium-sized Malpura and Avikalin sheep by breeding them artificially for producing crossbreds, and to determine the effect of individual ram, age, and breed of ewes on success rate, following artificial insemination...

Author(s)
Naqvi, S. M. K.; Maurya, V. P.; Anil Joshi; Sharma, R. C.; Mittal, J. P.
Publisher
Asian-Australasian Association of Animal Production Societies, Kyunggi-do, Korea Republic
Citation
Asian-Australasian Journal of Animal Sciences, 2002, 15, 5, pp 633-636
Abstract

The reproductive performance of 1643 Black-and-White cows (cb) with varying gene shares of Holstein-Friesian were collected and analysed. Results showed that the age at first calving and calving season do not have any significant influence on the cows' fertility. The age of cows also did not...

Author(s)
Jankowska, M.
Publisher
Wydawnictwo Akademii Rolniczej, Szczecin, Szczecin, Poland
Citation
Acta Scientiarum Polonorum - Zootechnica, 2002, 1, 1/2, pp 63-73
Abstract

During 2001 on the territory of Veterinary Surgery Brezovica, Veterinary Station Remetinec, 785 cows and heifers were artificially inseminated and the relevant data obtained were analysed. Among the 785 cows, 287 were inseminated again (due to repeated oestrus). The cows and heifers were classified ...

Author(s)
Kavan, R.
Publisher
Veterinaria, Zagreb, Croatia
Citation
Veterinarska Stanica, 2002, 33, 5, pp 261-268

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