161 KB18 KB2004Lévai, AndrásMilisits, Gáborštevilka:1str. 161-167ISSN:1581-9175COBISSID:1617544ISSN:1854-4800URN:URN:NBN:SI:doc-DR0ZTPYMenBiotehniška fakultetaActa agriculturae slovenica. SuplementkuncireprodukcijaselekcijaReproduction of rabbit does divergently selected for body fat content| Reprodukcijske lastnosti kunk glede na različno vsebnost telesne maščobe|Body fat content of Pannon White rabbits was determined at 10 weeks of age using an EM-SCAN SA-3152 tzpe Small Animal Body Composition Analyser (TOBEC method). Based on the fat determined content, the best and worst 16% of does and the best and worst 8% of bucks were chosen and mated with each other (a fatty doe with a fatty buck and a lean doe with a lean buck). Changes in the conception rate showed that rabbits selected for a high body fat content became pregnant at a higher rate compared to rabbits with a low body fat. In contrast to this non-fatty does showed better results in the case of litter size at birth. In the case of alive born pups also the superiority of non-fatty does was observed, but the differences between the groups were less important in this case. The reason of this may be in the changes of dead born pups. The mortality rate of pups during the suckling period (till 21 days of age) showed that the mortality of the offspring of non-fatty does was higher compared to the offspring of fatty ones. As conclusion it was established, that does selected for high body fat content have mostly higher conception rate, produce smaller litters at birth, but because of the lower mortality rate of their offspring during the suckling period they have larger and heavier litters at 21 day after parturition as compared to the non-fatty onesPri pasmi panonski beli kunec je bila določena vsebnost telesne maščobe s pomočjo aparata za merjenje telesne maščobe pri malih živalih tipa EM-SCAN SA-3153 (po metodi TOBEC). Glede na izmerjeno vsebnost maščobe je bilo izbranih 18% najboljših in najslabših kunčjih samic ter 8 % najboljših in najslabših samcev, ki so jih med seboj parili (zamaščene samice z zamaščenimi samci in suhe samice s suhimi samci). Samice z visoko vsebnostjo telesne maščobe so imele boljšo stopnjo oploditve kot samice z malo telesne maščobe. Nasprotno pa so samice z manj telesne maščobe imele večja gnezda. Prav tako so imele samice z manj telesne maščobe več živorojenih mladičev, vendar pa se je razlika med skupinama spremenila v primerjavi s skupnim številom rojenih mladičev. Smrtnost mladičev v sesnem obdobju (do 21. dneva starosti) je bila pri potomcih manj zamaščenih samic večja kot pri potomcih zamaščenih samic. Kunčje samice z več telesne maščobe so imele v večini večji delež oploditve, manjše potomce ob rojstvu, vendar pa zaradi manjše smrtnosti mladičev v sesnem obdobju večje in težje potomce po 21. dnevu starosti v primerjavi z manj zamaščenimi samicamiTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Biotehniška fakulteta