| Studies on fixed-time ovulation induction in the pig. | |
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MedLine Citation:
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PMID: 19848281 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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A technology that allows for manipulating of oestrus and ovulation, and would then also allow for fixed-time insemination, can be of great benefit for swine farms that operate using sow batch management due, at least in part, to savings in labour and the production of large batches of evenly developed pigs. Thanks to the current knowledge on endocrine regulation of follicle development and ovulation, and the availability of numerous reproductively active substances such a technology is now available. It covers procedures for synchronising oestrus based on the use of altrenogest in gilts and of batch-wise weaning in sows, for stimulating follicle development using eCG and for inducing of ovulation using hCG or LH as well as GnRH analogues. While the procedures for oestrus synchronisation stand alone, other procedures require additional treatments. If fixed-time insemination is the goal, oestrus needs to be synchronised and follicular development and ovulation induced by the use of GnRH analogues and hCG with ovulation occurring within 36-42 hrs. It is a general recommendation to inseminate those animals twice, i.e. 24 and 40 hrs after ovulation induction. However, the aforementioned technology requires healthy animals and a solid management and cannot be used to compensate for poor management. |
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Authors:
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K P Brüssow; F Schneider; W Kanitz; J Rátky; J Kauffold; M Wähner |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Society of Reproduction and Fertility supplement Volume: 66 ISSN: - ISO Abbreviation: Soc Reprod Fertil Suppl Publication Date: 2009 |
Date Detail:
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Created Date: 2009-10-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101295315 Medline TA: Soc Reprod Fertil Suppl Country: England |
Other Details:
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Languages: eng Pagination: 187-95 Citation Subset: IM |
Affiliation:
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FBN Research Institute for the Biology of Farm Animals, D-18196 Dummerstorf, Germany. bruessow@fbn-dummerstorf.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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