20.500.12556/RUL-57908 Long-term divergent selection for 8-week body weight in chicken-a review of experiment Rezultati poskusov iz dvosmerne selekcije na telesno maso piščancev pri 8. tednih starosti In order to study the effects of long-term selection on genetic parameters, the effect of selection on selected and correlated traits and to develop lines for various physiological, biochemical and molecular genetic studies a comprehensive selection study for body weight in chickens has been conducted at the Biotechnical Faculty of University in Ljubljana. Long-term divergent selection in chickens for 8-week body weight for 31 generations produced a high weight (D+) and low weight (D-) line. Bodz weight at 8 weeks of age was the exclusive selection criterion. Selection lines were compared for body weight and for unselected traits including carcass traits, feed conversion, egg and meat quality traits, reproduction traits, muscle characteristics, nutritional and physiological traits. This paper describes the most important results of different experiments that were performed on animals from both lines in various generations of selection. Z namenom ocenjevanja učinkov dolgotrajne selekcije na genetske parametre, selekcionirane in korelirane lastnosti ter za potrebe izvajanja raziskav s področij fiziologije, biokemije in molekularne genetike je bil na Biotehniški fakulteti Univerze v Ljubljani izpeljan obsežen dvosmerni selekcijski poskus na telesno maso piščancev. Enaintrideset generacij smo odbirali piščance na večjo (D+ linija) in manjšo (D- linija) telesno maso pri osmih tednih starosti, ki je bila vseskozi edini selekcijski kriterij. V posameznih generacijah smo proučevali direktne (telesna masa) in korelirane učinke selekcije (klavne lastnosti, iykoriščanje krme, kakovost jajc in mesa, reprodukcijske lastnosti, lastnosti mišičnih vlaken, prehranske in fiziološke lastnosti). V članku so zbrani najpomembnejši rezultati omenjenih raziskav. poultry chickens divergent selection growth correlated traits perutnina piščanci dvosmerna selekcija rast korelirane lastnosti true false false Biotehniška fakulteta Angleški jezik Slovenski jezik Delo ni kategorizirano 2015-07-10 17:59:36 2015-07-10 17:59:36 2022-07-04 03:41:55 0000-00-00 00:00:00 2008 0 0 Str. 131-138 št. 2 Letn. 92 2008 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 636.5 1581-9175 2411912 213840640 http://www.dlib.si/details/URN:NBN:SI:doc-MZM5MJRD 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=57919 Biotehniška fakulteta Acta agriculturae Slovenica 0 0 0