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Abstract

Accurate diagnosis of pregnancy is an essential component of an effective reproductive management plan for dairy cattle. Indirect methods of pregnancy detection can be performed soon after breeding and offer an advantage over traditional direct methods in not requiring an experienced veterinarian...

Author(s)
Fosgate, G. T.; Motimele, B.; Ganswindt, A.; Irons, P. C.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Preventive Veterinary Medicine, 2017, 145, pp 100-109
Abstract

In a 7-year longitudinal study 292 Bovelder beef cows in a restricted breeding system in South Africa were observed from 1 to 2 days before their first breeding season, when reproductive tract scoring (RTS, scored from 1 to 5) was performed, until weaning their 5th calves. The objective was to...

Author(s)
Holm, D. E.; Nielen, M.; Jorritsma, R.; Irons, P. C.; Thompson, P. N.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Preventive Veterinary Medicine, 2015, 118, 1, pp 56-63
Abstract

The study evaluated the effect of duration of progestagen treatment and breed on response to oestrous synchronisation and pregnancy rate following AI in 47 Boer and 27 unimproved indigenous goats. Each breed was subdivided into two groups, based on the duration of progestagen treatment. In the...

Author(s)
Ramukhithi, F. V.; Nedambale, T. L.; Sutherland, B.; Greyling, J. P. C.; Lehloenya, K. C.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2012, 40, 4, pp 292-296
Abstract

The first successful AI in an elephant was reported in 1998, using fresh semen. Since then almost 40 calves have been produced through AI in both Asian and African elephants worldwide. Following these successes, with the objective of enriching the captive population with genetic material from the...

Author(s)
Hildebrandt, T. B.; Hermes, R.; Saragusty, J.; Potier, R.; Schwammer, H. M.; Balfanz, F.; Vielgrader, H.; Baker, B.; Bartels, P.; Göritz, F.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2012, 78, 6, pp 1398-1404
Abstract

Poor fertility has become a major reason for the involuntary culling of dairy cows in South Africa. Routine analyses for fertility traits for Holstein cows in South Africa are at present based on calving interval (CI). Artificial insemination (AI) records were used to estimate genetic parameters...

Author(s)
Potgieter, J. P.; Muller, C. J. C.; Cloete, S. W. P.; Zishiri, O. T.; Dzama, K.
Publisher
Association for the Advancement of Animal Breeding and Genetics, Armidale, Australia
Citation
Proceedings of the 19th Conference of the Association for the Advancement of Animal Breeding and Genetics (AAABG), University of Western Australia, Perth, W.A., Australia, 19-21 July, 2011. Breeding objectives: a new paradigm, 2011, pp 482-485
Abstract

The reproductive performance following oestrous synchronisation and artificial insemination (AI) was evaluated during the natural breeding season (autumn) in 90 indigenous (Boer and Nguni) South African goats. All does were synchronised for 16 days with medroxyprogesterone acetate (MAP) followed by ...

Author(s)
Lehloenya, K. C.; Greyling, J. P. C.; Schwalbach, L. M. J.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Small Ruminant Research, 2005, 57, 2/3, pp 115-120
Abstract

This book of 240 pages plus glossary and index is primarily intended for the stock-owner and breeder, agricultural students and insemination technicians, but the veterinary student would also find much of interest. It is concerned principally with cattle and sheep, the emphasis being on cattle, but ...

Author(s)
VAN RENSBURG, S. W. J.
Publisher
Pretoria: Libagric, P. O. Box,
Citation
Breeding problems and artificial insemination., 1957, 15, pp 249 pp.
Abstract

Mixed groups of cattle on a ranch in North Zululand were studied during 2 seasons, 1958-59 and 1959-60. Heat was detected by the herd boys. Cows were inseminated under various systems, semen being obtained by electro-ejaculation, and after insemination, pregnancy was tested at 2 1/2 mths. and every ...

Author(s)
HOEAK, I. G.
Citation
Journal of the South African Veterinary Medical Association, 1960, 31, pp 99-106
Abstract

The book is written specifically for farmers but the author avoids making the mistake of "talking down" to them. 66 pages relate to artificial insemination; in general this section is eminently practical and up to date on all farm species, and sufficiently detailed. The sections on its application...

Author(s)
VAN RENSBURG, S. W. J.
Publisher
Pretoria: Libagric.,
Citation
Breeding problems and artificial insemination., 1957, pp 249 pp.
Abstract

INSEMINATION with fresh semen of 20 Merino sheep, maintained under dry lot conditions, gave 95% of pregnancies as compared with 88.87% in 18 animals served normally. Satisfactory results were also obtained in groups of 20-25 animals with semen stored for 6 hrs. (60% conceptions) and for 12 hrs....

Author(s)
QUINLAN, J.; STEYN, H. P.
Citation
Onderstepoort Journal of Veterinary Science, 1941, 16, pp 263-297

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