20.500.12556/DKUM-43656 UČINKOVITOST DODATKA FITAZE V POPOLNI KRMNI MEŠANICI NA PROIZVODNE REZULTATE PIŠČANCEV BROJLERJEV Efficiency of phytase enzyme additive in complete feed mixture on the production results of broiler chickens V raziskavi smo želeli ugotoviti, ali novejši encimi fitaze izkazujejo boljšo aktivnost in učinkovitost pri reji piščancev brojlerjev kot starejši, že uporabljeni encimi. Dan stare piščance (DSP) provenience Ross 308 smo razdelili na tri skupine (A, B, C) po 6 ponovitev v ločenih oddelkih po 100 živali. Vsaka skupina je dobivala enako krmno mešanico, ki se je razlikovala v primešanem encimskem dodatku. Skupinam smo v krmne mešanice dodajali različne koncentracije dodatkov. Skupini A smo dodali dodatek A 150 g/tono, skupini B dodatek B 33g/tono, skupina C pa je bila krmljena s dodatkom C 50 g/tono krmne mešanice. Vse tri skupine so dosegale zelo dobre proizvodne rezultate, nizko mortalnost in dobro konverzijo krme. Najvišjo maso na 42. dan reje je dosegla skupina A (2,942 kg), z majhnim odstopanjem sledi skupina C (2,932 kg). Obe skupini sta se statistično značilno (p ≤ 0,05) ločili od skupine B. Pri konverziji krme se skupine med seboj niso statistično značilno razlikovale (p > 0,05). Skupina C je dosegla najugodnejšo konverzijo krme (1,717 kg/kg), sledila je skupina B (1,738 kg/kg) in nato skupina A (1,739 kg/kg). V skupini A in C je poginilo 15 (2,5 %) živali, v skupini B pa 8 (1,33 %) živali. Najvišji koeficient učinkovitosti izkazuje skupina C (380,0). Prav zato lahko sklepamo, da je v našem poskusu najboljše rezultate dosegla skupina C, ki je imela dodatek C 50 g/tono krmne mešanice. In the research, we wanted to determine whether the newer phytase enzymes exhibit improved activity and efficacy in chicken breeding of broilers, as older have used enzymes. We divided the day-old chickens (DSP), provenience Ross 308 into three groups (A, B, C) after 6 cycles in separate sections of 100 animals. Each group received the same feed mixture, which differed in the spiked enzyme supplement. The group A was added to appendix A of 150 g/ton of feed, the group B appendix B 33g/ton feed and the group C was fed with the addition of C 50 g/ton of feed. All three groups have achieved very good production results, low mortality, and good feed conversion. The highest body weight on 42th day was noted in the group A (2.942 kg), with small deviations followed by the group C (2.932 kg). Both groups were statistically significantly (p ≤ 0.05) separated from the group B. When converting the feed between groups, we did not show statistically significant differences (p > 0.05). The group C has reached the best-feed conversion (1.717 kg/kg), followed by the group B (1.738 kg/kg) and then the group A (1.739 kg/kg). In the groups A and C were recorded low mortality levels; only 15 (2.5 %) animals in each group and in the group B 8 (1.33 %) animals died. The best coefficient of efficiency was demonstrated by the group C (380.0). It can be concluded that in our experiment, the best results were achieved by the group C. piščanci brojlerji fitaza rastnost konverzija koeficient učinkovitosti broiler chicks phytase growth feed conversion coefficient of efficiency true true false Slovenski jezik Angleški jezik Diplomsko delo 2014-02-19 16:44:37 2014-03-03 10:02:07 2022-05-10 03:06:28 2021-04-28 03:28:47 2014 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:XRPOYYRE VS_Perko_Denis_2014.pdf VS_Perko_Denis_2014.pdf 1 7C55C1A2FDD741D5B6B0C89DA3DEAF05 1445ab0ee9042e9255e269d712f6423705503376567aee02ef079e4ba0aaf3cb af38d6e4-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=62258 Fakulteta za kmetijstvo in biosistemske vede 0 0 0