World statistics for artificial insemination in cattle

Thibier, M.; Wagner, H.-G

doi:10.1016/s0301-6226(01)00291-3

Cited by 113 publications

(69 citation statements)

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“…Most countries in Africa have rules and regulations in place to control the use of these reproductive biotechnologies, but the aims are to guard against the exploitation of genetic resources, rather than the biotechnologies per se. The adoption rate of artificial insemination of cattle and buffalo in Africa is estimated at about 1.68%, compared to the world average of 20.32% (Thibier & Wagner, 2002), which leaves room for further improvements in this regard. There is a vast amount of literature that confirms the rapid uptake of AI, due to the technical, genetic and economic advantages in the commercial dairy industry in the developed countries around the world (Cunningham, 1999;Corrigan & Parnell, 2006).…”

Section: Impact Of Artificial Inseminationmentioning

confidence: 99%

“…Thibier & Wagner (2002) conducted a world survey of the artificial insemination industry and also estimated the impact of AI on different continents. The data shows that already in 1998 there was about 648 semen collection centres and 1635 semen banks worldwide.…”

Section: Impact Of Artificial Inseminationmentioning

confidence: 99%

“…Africa produced less than 1% of the total number of semen doses in 1998, from about 650 bulls per annum, which represent about 1.57% of the global pool of bulls used for semen collection. Based on the data obtained by Thibier & Wagner (2002), South Africa was the most active semen producing country in 1998. Breeds of bulls used for semen collection purposes in Africa are summarized in Table 2.…”

Section: Impact Of Artificial Inseminationmentioning

confidence: 99%

See 2 more Smart Citations

A Perspective on the Impact of Reproductive Technologies on Food Production in Africa

Marle-Köster

Webb

2013

Current and Future Reproductive Technologies and World Food Production

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Africa for the largest part is still regarded as part of the developing world and has a history of political instability, natural disasters, floods and droughts that all had an effect on the development of livestock production systems and the potential application of biotechnologies. It is expected that the human population in sub Saharan Africa will experience a growth of 1.2 % per year over the next 30 years. There is therefore pressure to increase sustainable productivity of livestock. Reproductive technologies such as Artificial Insemination in Africa were driven primarily by the need to control or prevent venereal diseases like Trichomoniases and Campylobacter fetus venerealis in cattle. Reproductive biotechnology had a limited impact in Africa due to several factors including a lack of infrastructure and animal recording systems, clear breeding objectives and continuously changing production systems and markets. Africa has a large variety of genetic resources adapted to the diverse environment and production systems and biotechnology should be applied within this context for an increase in food production.

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Section: Impact Of Artificial Inseminationmentioning

confidence: 99%

Section: Impact Of Artificial Inseminationmentioning

confidence: 99%

Section: Impact Of Artificial Inseminationmentioning

confidence: 99%

See 1 more Smart Citation

A Perspective on the Impact of Reproductive Technologies on Food Production in Africa

Marle-Köster

Webb

2013

Current and Future Reproductive Technologies and World Food Production

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“…It is an indispensable technology to the AI industry internationally with 95% of AI worldwide carried out using frozen-thawed sperm (Thibier and Wagner, 2002). However, higher concentrations of sperm must be used per insemination dose to achieve non-return rates (NRRs) comparable to AI with fresh sperm (Vishwanath and Shannon, 2000).…”

Section: Introductionmentioning

confidence: 99%

Improving bovine semen diluents: insights from the male and female reproductive tracts, and the potential relevance of cervical mucins

McGetrick

Reid

Carrington

2014

Animal

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The commercial applicability of bovine artificial insemination (AI) depends on the effectiveness of diluents for maintaining sperm fertility. Challenges faced by the AI industry due to recent advances in assisted reproduction, and the limitations inherent in using fresh and frozen-thawed sperm for AI, could be overcome with the development of better semen diluents. Research into the different microenvironments of bovine sperm as they progress towards maturity, capacitation and fertilisation is revealing various mechanisms that could be exploited to improve the formulation of semen diluents. These are reviewed here. A rationale for a more detailed investigation of bovine cervical mucus for factors that may allow further progress towards this goal are also discussed.Keywords: bovine sperm, semen diluents, artificial insemination ImplicationsArtificial insemination is used for almost 20% of breeding cows worldwide. There is a need for semen extenders that enhance and prolong semen fertility beyond that which is possible using existing commercial formulations for cryopreservation or liquid semen storage. This could allow the use of reduced numbers of sperm per insemination, enhance the use of bulls of high genetic merit, and facilitate the greater application of fresh and sex-sorted semen. Here we review current information on the microenvironments of sperm as they mature and migrate. We also discuss how this knowledge can be used in the design of next-generation semen diluents. IntroductionArtificial insemination (AI) has facilitated improvements to the genetic merit of dairy herds worldwide through provision of greater access to sires with favourable genetic traits, such as those relating to milk production and health. AI also allows easier herd management, reduces the risk of venereal disease, and improves farm safety. The semen extenders employed to successfully maintain the fertility of sperm are central to the widespread and commercial use of AI and these have been extensively reviewed (Vishwanath and Shannon, 2000;Vishwanath, 2003). However, current drawbacks to storage of sperm in a cryopreserved or fresh (liquid) state highlight the need for improvements to semen diluents.Cryopreservation of sperm facilitates its storage for indefinite periods. It is an indispensable technology to the AI industry internationally with 95% of AI worldwide carried out using frozen-thawed sperm (Thibier and Wagner, 2002). However, higher concentrations of sperm must be used per insemination dose to achieve non-return rates (NRRs) comparable to AI with fresh sperm (Vishwanath and Shannon, 2000). Sperm damage occurs during sperm cryopreservation as a result of mechanical stress to the plasma membrane and the generation of excess reactive oxygen species (ROS) (Bailey et al., 2000). This cryodamage is likely to account for the reduced viability of frozen-thawed compared with fresh sperm. However, cryocapacitation, a phenomenon of sperm cryopreservation (Bailey et al., 2000), could account in part for reduced fertility of frozen-tha...

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“…Artificial insemination (AI) is a very useful tool to introduce superior genes with a minimal risk of disease as compared with natural mating [4]. Improvements in cryopreservation of semen as well as storage in its liquid form have made AI more accessible [5,6]. In vitro manipulation of gametes for the production of embryos was first successfully applied in mice in 1958 and in rabbits in 1959 [7].…”

Section: Introductionmentioning

confidence: 99%

Use of Silicone Elastomer-Based Microfluidic Devices and Systems in Reproductive Technologies

Matsuura¹,

Naruse²

2012

Advanced Elastomers - Technology, Properties and Applications

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World statistics for artificial insemination in cattle

Cited by 113 publications

References 0 publications

A Perspective on the Impact of Reproductive Technologies on Food Production in Africa

A Perspective on the Impact of Reproductive Technologies on Food Production in Africa

Improving bovine semen diluents: insights from the male and female reproductive tracts, and the potential relevance of cervical mucins

Use of Silicone Elastomer-Based Microfluidic Devices and Systems in Reproductive Technologies

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