Artificial insemination

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Cytogenetic investigation in Saanen and Alpine artificial insemination bucks.

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  • The extensive application of AI in domestic animals is demanding an efficient technique with high rate of success. Methods of improving the success of AI are subsequently emanating from continuous research in the areas of procuring the best quality semen that also require employing a rigours semen evaluation system. This book was prepared with an intention of creating a useful addition to an already available literature on different aspects of AI.

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Expected efficiency of selection for growth in a French beef cattle breeding scheme. I. Multistage selection of bulls used in artificial insemination

    pdf0p toshiba20 15-11-2011 30 2   Download

  • Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Fixed-time artificial insemination in beef cattle...

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Chromosomal analysis of embryos produced by artificially inseminated superovulated cattle

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  • By playing a role in the near-annihilation of a species, Theodore Roosevelt, the president of the United States at the turn of the twentieth century, unwittingly laid the groundwork for the most dramatic triumph yet in the use of artificial insemination (AI) to rescue a species from extinction. In the early 1900s, waves of immigrants from Europe settled in the American Midwest. As humans transformed the land, they declared war on a perceived pest: the prairie dog.

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  • Crossbreeding work in Ethiopia was initiated in the early 1950s. Following this initiation a number of governmental (example, Ethiopian Agricultural Research Organization, Ministry of Agriculture, National Artificial Insemination Center, Higher Learning Institutes) and non-governmental organizations (International Livestock Research Institute and Swedish International Development Agency) have worked in the development of the dairy sector.

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  • This book contains four parts with 16 chapters. Firstly, an optimal stimulation scheme  for  ovaries,  particularly  natural  and  minimal  stimulation  of  ovaries,  has  been  discussed  in  the  first  part.  Then,  one  paper  analyzed  that  how  many  oocytes  per  retrieval will be  the best  for human IVF practice. If one stimulation scheme produces  too  many  eggs,  it  often  results  in  hyperstimulation  syndrome.

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  • It is said that farms having land to grow crops and forage (PK-3 and PK-10R) were relatively most competitive. The PK-10R farm is said to be most viable farm size, and has the potential of challenging competitors in export markets6. Such farms make effective use of technological advances in breeding practices, e.g., artificial insemination, to improve their herd quality. Some of them have also installed their own pasteurization or processing equipment. However, there are only 23% of farmers who fall in the PK-10R category, whereas 70% of the farmers have less than four animals.

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  • In the kidney, the Th2-mediated response is characterized by formation of immune complexes and deposition in the glomerulus, which is usually followed by complement activation. On the other hand, the Th1-mediated response is characterized by infiltration of circulating mononuclear cells and crescent formation. Both responses are capable of releasing mediators that are responsible for functional and structural changes as seen in primary glomerular diseases.

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  • The Artificial Insemination Database Application for Asia (AIDA Asia) was developed by FAO/IAEA in Microsoft Access 2000® and Visual Basic for Applications ® 6.0 [8]. The computer application contains 6 files to record, analyse and report data on farms, females inseminated, semen, oestrus characteristics, inseminators and pregnancy diagnosis. Fourteen bulls comprising 7 zebus and 7 crossbreds (50% zebu and 50% Friesian) that were used in the national AI programme were selected to determine their fertility.

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  • By the close of official activities, the project had already contributed notably towards increasing the productivity of livestock in the RCA countries, largely by increasing the production of milk and meat. This, in turn, enhanced the incomes of the participating farmers. In addition, due to the establishment of close coordination between this project, national projects and coordinated research programmes, several laboratories have received complementary assistance for upgrading their facilities and for consolidating their experimentation capabilities in the field.

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  • Because the ART industry is largely unregulated, we have very little data on who uses these technologies. Until 2003, the only national data collected was through the Fertility Clinic Success Rate and Certification Act of 1992, which requires that fertility clinics report the number of pregnancies and live births from ART, which the Act defines narrowly as “fertility treatments in which both eggs and sperm are handled in the laboratory” (e.g.

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  • Most of the South Asian and Pacific countries have similarities in setting the policy and execution of dairy and beef cattle genetic improvement programmes. Historically, governments have played a major role in cattle farming and breeding activities; nowadays, however, the initiatives of the private sector or of non-government organizations are modifying the needs of farmers for support from the government. About 90% of the contribution of the livestock sector is from small holders and this proportion is highly consistent across countries.

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