Essay on estimation of undemonstrative spare outputs disclosed by reproduction biotechnologies in sheep breeding

Published in Scientific Papers. Series D. Animal Science, Vol. LV
Written by Marcel Theodor PARASCHIVESCU, Alexandru ȘONEA, Alexandru BOGDAN, Marcel PARASCHIVESCU, George Florea TOBĂ

Among genetic species of farm animals sheep has the highest artificial biodiversity. There are plenty of breeds due to the many kinds of biological production of human interest and to the large areas from plains to mountains and fro Equator to Poles engaged in sheep breeding. Sheep are producing wool (thin, meddle or thick), lambs, mouton (lean or fat), milk, pelts, furs or leather, each of them acting as single selection criterion or as component of selection indexes. Each kind of resulted product has its own commercial value and its way of appreciation it. In many cases the commercial value of sheep breeding is related to the ewes’ fertility. On the other hand ewes have seasonal sexual activity including a longer or shorter period of anoestrus when produce nothing related to their fertility. Biotechnological means as artificial insemination, estrus induction, arouse of ovulation rate, embryo transfer, MOET, embryo cloning, in vitro fertilization, transgenice engineering are able to influence the economic efficiency of sheep breeding. The present essay is configuring modalities of estimating the increase of economic value of sheep products when research programs of developing reproductive biotechnologies in ewes implemented in sheep farming.

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Paraschivescu M. T., Șonea A., Bogdan A., Paraschivescu M., Tobă G. F., 2012, Essay on estimation of undemonstrative spare outputs disclosed by reproduction biotechnologies in sheep breeding. Scientific Papers. Series D. Animal Science, Vol. LV, ISSN-L 2285-5750, 134-139.

 


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© 2012 SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE. All Rights Reserved. To be cited: SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE
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