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Animal Science Database

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Abstract

Data on 965 417 calvings from American Angus herds throughout the USA, recorded during 1972-85, were used to study factors affecting dystocia and early calf mortality. A sample of 53 herds (83 467 records) was used to establish reasonable limits on the expected frequency of dystocia and mortality...

Author(s)
Berger, P. J.; Cubas, A. C.; Koehler, K. J.; Healey, M. H.
Citation
Journal of Animal Science, 1992, 70, 6, pp 1775-1786
Abstract

Heterosis effects were evaluated as traits of the dam in F2 progeny of F1 dams and F3 and F4 progeny of F2 and F3 dams in 3 composite breed types. Breed effects were evaluated for the 9 parental breeds (Red Poll, Hereford, American Angus, Limousin, Brown Mountain, Pinzgauer, Gelbvieh, Simmental and ...

Author(s)
Gregory, K. E.; Cundiff, L. V.; Koch, R. M.
Citation
Journal of Animal Science, 1991, 69, 9, pp 3574-3589
Abstract

Data on 21 611 Piedmont ×(Chianina × German Simmental [GS]), Chianina × (Charolais × GS), Chianina × (Limousin × GS), Chianina, Charolais × GS, Limousin ×(Chianina × GS), (Chianina × GS) × (Charolais × GS), Piedmont × (Limousin × GS) and GS calves, born in 1980-87, were analysed. Birth weight of ♂...

Author(s)
Neumann, W.; Martin, J.; Weiher, O.; Baumgartl, M.; Kloss, H.; Hildebrandt, E.
Citation
Archiv für Tierzucht, 1990, 33, 3, pp 237-244
Abstract

In 1987-88, the major causes of newborn lamb mortality in a flock of fine-wooled sheep reared for wool and meat were dystocia, low birth weight and low milk yield of the dam. Tabulated data indicated that lamb birth weight was directly related to ewe weight during the 100 days after parturition....

Author(s)
Khamitsaev, R. S.
Citation
Byulleten' Nauchnykh Rabot - Vsesoyuznyĭ Nauchno-Issledovatel'skii Institut Zhivotnovodstva, 1990, No. 97, pp 7-10
Abstract

In studies in 1979-1981 on Marshall Romney (MR) and control Romney (CR) ewes mated with MR or CR rams, lamb survival was 8.5% higher for lambs born to MR ewes and 5.5% higher for lambs sired by MR rams. The improved survival of lambs from MR ewes was associated with a lower incidence of dystocia...

Author(s)
Knight, T. W.; Lynch, P. R.; Hall, D. R. H.; Hockey, H. U. P.
Citation
New Zealand Journal of Agricultural Research, 1988, 31, 3, pp 259-271
Abstract

Calving and weaning rates, birth weight, ease of calving, and 24-h calf survival were evaluated in a 4-breed diallel of Simmental, Limousin, Polled Hereford (PH) and Brahman cattle in 5 calf crops. Limousin dams tended to have the highest calving and weaning rates because they produced heavier...

Author(s)
Comerford, J. W.; Bertrand, J. K.; Benyshek, L. L.; Johnson, M. H.
Citation
Journal of Animal Science, 1987, 64, 1, pp 65-76
Abstract

Mortality data on 5163 Romney × Suffolk lambs were collected from 1976 to 1981. Mortality from birth to tailing (25 days) for single, twin and triplet births was 14.1, 14.7 and 33.0% with mean birthweights of 5.2, 4.1 and 3.3 kg, respectively. Within 72 h of birth 94% of all deaths occurred....

Author(s)
Scales, G. H.; Burton, R. N.; Moss, R. A.
Citation
New Zealand Journal of Agricultural Research, 1986, 29, 1, pp 75-82
Abstract

Data on pregnancy duration, birth weight, calving difficulty and survival from birth to weaning were analysed for 4639 calves by 290 sires of 14 breeds (Hereford, Aberdeen-Angus, Jersey, South Devon, Limousin, Simmental, Charolais, Red Poll, Brown Swiss, German Yellow, Maine-Anjou, Chiana, Pinzgau...

Author(s)
Cundiff, L. V.; MacNeil, M. D.
Citation
Journal of Animal Science, 1986, 63, 1, pp 27-33
Abstract

528 birth records and 475 weaning records collected over a 3-yr period were analysed. The calves were produced by artificial insemination using 17 Brahman, 15 Chiana, 15 Maine-Anjou and 16 Simmental sires mated to Aberdeen-Angus (AA) and Hereford dams aged 3-11 yr. Breed-of-sire effects were...

Author(s)
Williamson, W. D.; Humes, P. E.
Citation
Journal of Animal Science, 1985, 61, 5, pp 1137-1145
Abstract

In a herd comprising 250 red, wapiti and wapiti × red deer ♀♀ in New Zealand, calf mortality in the 1983-84 and 1984-85 calving seasons was 7%. For 46 calves examined post mortem, 24, 24 and 24% of deaths resp. were due to stillbirths, dystocia and mismothering. Of the stillborn calves, 8 were ♂♂...

Author(s)
Gill, J. M.
Publisher
New Zealand Veterinary Association, Auckland, New Zealand
Citation
Proceedings of a Deer Course for Veterinarians, Ashburton, July 1985., 1985, pp 186-192

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