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Abstract

Our objective was to compare the AI submission rate and pregnancies per artificial insemination (P/AI) at first service of lactating Holstein cows submitted to a Double-Ovsynch protocol and timed artificial insemination (TAI) versus artificial insemination (AI) to a detected estrus after...

Author(s)
Santos, V. G.; Carvalho, P. D.; Maia, C.; Carneiro, B.; Valenza, A.; Fricke, P. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 10, pp 8507-8517
Abstract

Transrectal palpation of the reproductive tract is the most common method for pregnancy determination in cattle and is considered a veterinary skill that new veterinary medicine (DVM) graduates should perform proficiently. However, using privately owned cattle to train students can be difficult...

Author(s)
Bond, R. L.; Midla, L. T.; Gordon, E. D.; Welker, F. H. B.; Masterson, M. A.; Mathys, D. A.; Mollenkopf, D. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 10, pp 9236-9240
Abstract

To assess the reproductive performance of cows/heifers in smallholder dairy farms, retrospective and longitudinal studies based on artificial insemination were conducted. The recommended basic AI procedures were kept and applied for study animals. In the longitudinal study 86.4% of the dairy cattle ...

Author(s)
Jemal, H.; Lemma, A.; Bekana, M.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2016, 28, 5, pp Article 81
Abstract

Semen quantity and quality are affected by transportation and frequent semen collection in ram when they are transported from nucleus flock to target farms for in situ artificial insemination (AI) of ewes with fresh semen. The current study was designed to introduce the best method of fresh semen...

Author(s)
Hashemi, M.; Safdarian, M.; Hashemi, S. M. R.
Publisher
Indian Council of Agricultural Research, New Delhi, India
Citation
Indian Journal of Animal Sciences, 2018, 88, 11, pp 1254-1257
Abstract

Our aim was to investigate insemination techniques in order to improve pregnancy rates of artificial insemination (AI) using sex-sorted semen (sexed AI) in cattle in tropical and subtropical (T/ST) regions. In T/ST regions, the pregnancy rates by sexed AI are reportedly the lowest in the hottest...

Author(s)
Chang LianBen; Chou ChihJen; Shiu JiaShian; Tu PoAn; Gao ShiXuan; Peng ShaoYu; Wu ShinnChih
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 6, pp 1157-1162
Abstract

A study was conducted to compare conception rates in 71 Tuli and 86 Afrikander beef cattle bred using either artificial insemination (AI) or the bull. Animals were bred using either artificial insemination or natural service at Matopos Research Station. Animals were grouped into three groups of...

Author(s)
Washaya, S.; Tavirimirwa, B.; Dube, S.; Sisito, G.; Tambo, G.; Ncube, S.; Zhakata, X.
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2019, 51, 7, pp 1963-1968
Abstract

Assessment of urine levels of luteinizing hormone (LH) for predicting the reproductive status of animals is in practice. The aim of this study was to predict the period of ovulation based on the urine levels of LH for timed-artificial insemination to increase the conception rate in buffaloes, which ...

Author(s)
Selvam, R. M.; Singh, D.; Akbarsha, M. A.; Archunan, G.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2017, 52, 3, pp 517-521
Abstract

The use of controlled mating or artificial insemination is impracticable in the case of large herds, mainly because of labour costs and the need to delimit areas during the breeding period. However, the exclusion of information from animals with uncertain paternity reduces genetic progress. The...

Author(s)
Shiotsuki, L.; Cardoso, F. F.; Albuquerque, L. G.
Publisher
Wiley, Berlin, Germany
Citation
Journal of Animal Breeding and Genetics, 2018, 135, 2, pp 116-123
Abstract

China was one of the first countries to use artificial insemination (AI) in equids, and it achieved international recognition for its widespread application of AI to commercial horse breeding. This article reviews the history of equine AI in China. The technique originated from the high demand for...

Author(s)
Deng Liang; Duan HongYun; Zhang Xiang; Zeng ShenMing; Wu ChangXin; Han GuoCai
Publisher
Elsevier, New York, USA
Citation
Journal of Equine Veterinary Science, 2014, 34, 3, pp 351-359
AbstractFull Text

Failure to become pregnant is the primary reason for a dairy cow to be culled from the production herd. A cow that is cycling normally, with no reproductive abnormalities, but has failed to conceive after at least three successive inseminations may cause economic losses in dairy farms. The present...

Author(s)
Arslan, K.; Akyüz, B.; Akçay, A.; Ilgar, E. G.; Macun, H. C.; Çınar, M. U.
Publisher
Veterinarska Fakulteta, Univerza v Ljubljani, Ljubljana, Slovenia
Citation
Slovenian Veterinary Research, 2017, 54, 2, pp 91-98

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