20.500.12556/DKUM-64047 VPLIV RAZLIČNIH SVETLOBNIH PROGRAMOV NA PROIZVODNOST BROJLERJEV The impact of different lightnig programs on broiler production Namen raziskave je bil ugotoviti vpliv različnih svetlobnih programov na proizvodnost broilerjev, saj je perutnina zelo občutljiva na dnevno nočni ritem. Testirali smo štiri programe. V programu 1 (23S:1T;20S:4T;23S:1T) so bile živali prvi teden izpostavljene 23-urni svetlobi in 1 uri teme, od 8. do 28. Dne so bile izpostavljene 20 uram svetlobe in 4 uram teme, od 28. Do 35. Dne pa 23 uram svetlobe in 1 uri teme. V programu 2 (24S;20S:4T) so imele živali prvi teden 24 ur svetlobe, potem pa do 20 ur svetlobe in 4 ure teme, živali v programu 3 (23S:1T) so bile 35 dni izpostavljene 23-urni svetlobi in 1 uri teme, medtem ko so imele živali v programu 4 (24S) vse dni 24 ur svetlobe. Ugotavljali smo vplive svetlobnih programov na maso, prirast mase, konverzijo krmil, razmerje voda/krma, pogin in PEF (proizvodna učinkovitost reje). Najnižja masa je bila dosežena v programu 3, ki se statistično značilno razlikuje (P ≤ 0,05) od ostalih programov. Najugodnejša konverzija je v programu 3. Pogin je bil največji v programu 4. V vseh programih PEF ne izkazuje bistvenih razlik. Na podlagi dobljenih rezultatov ugotovimo, da je za rejo najprimernejši program 2 (24S;20S:4T). The aim of our study was to determine the effect of different lighting programs on broiler production, as poultry is very sensitive to the day-night rhythm. We tested four programs. In program 1 (23L:1D;20L:4D;23L:1D), animals had 23 hours of light and 1 hour of darkness in week 1, 20 hours of light and 4 hours of darkness during Days 8-28, and 23 hours of light and 1 hour of darkness until day 35. In program 2 (24L;20L:4D), animals had 24 hours of light in week 1, followed by 20 hours of light and 4 hours of darkness. In program 3 (23L:1D), animals had 23 hours of light and 1 hour of darkness all 35 days. In program 4 (24L), animals had 24 hours of light all 35 days. The lowest weight was recorded in program 3 and significantly different from other programs (P ≤ 0,05). Feed conversion was best in program 3. Morbidity rate was highest in program 4. PEF was not significantly different in any program. Based on our results, program 2 (24L;20L:4D), has been the most appropriate for broiler breeding. brojlerski piščanci svetlobni program telesna masa rastnost broiler chicken lighting programs body weight growth rate true true false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2016-09-21 13:12:28 2016-10-11 07:14:14 2022-07-04 03:06:35 2019-07-11 13:48:35 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:IIURAN57 UN_Bedenik_Blaz_2016.pdf UN_Bedenik_Blaz_2016.pdf 1 70D97BBC86C9F8836A1909911F263472 99e820c1c1fae9be5788149b0f1d3ad77d4aad7d45de122c427fe2af31b72656 957daa11-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=105735 Fakulteta za kmetijstvo in biosistemske vede 0 0 0