20.500.12556/DKUM-68136 Primerjava proizvodnosti piščancev ross 308 in slovensko pozno operjene kokoši v pogojih ekološke reje Comparison of producability between ross 308 broilers and the slovenian late feathering hen in organic farming conditions Izbor primerne pasme je eno najpomembnejših vprašanj v ekološki reji perutnine, ki mora trajati vsaj 81 dni oziroma manj v primerjavi s počasi rastočimi pasmami. Cilj poskusa je bil primerjava proizvodnosti piščancev Ross 308 in slovenske pozno operjene kokoši (SPOK) v pogojih ekološke reje. Pri tem smo proučevali rastnost piščancev obeh provenienc, spremljali smo porabo krme, poškodbe nog, prsi in tarzalnih sklepov. Raziskavo smo izvedli na 50 Ross 308 piščancih in 52 piščancih SPOK. Piščance smo tehtali enkrat tedensko, ob tem smo zapisali tudi porabo krme. Poškodbe nog, tarzalnega sklepa ter prsi smo ocenili 60. dan pri piščancih Ross 308 ter 70. dan pri piščancih SPOK. Analiza podatkov je pokazala, da so do 21. dne piščanci slovenske pozno operjene kokoši imeli statistično značilno večjo rast kot piščanci Ross 308, nakar so po 42. dnevu reje in do konca reje statistično značilno več priraščali piščanci Ross 308. Piščanci Ross 308 so dosegli značilno večjo klavno maso (3884,47 g) kot piščanci SPOK, vendar je bila izmerjena pred 81. dnem starosti. Piščanci SPOK so zaužili več krme in kljub daljši življenjski dobi, dosegli manjšo statistično značilno maso klavnih trupov, kot tudi značilno manjši klavni izplen v primerjavi s piščanci Ross 308 (71,43 % in 76,94 %). Analiza ocen poškodb je pokaza, da ni značilnih razlik v pojavnosti poškodb blazinic stopala med proveniencama, vendar pa smo ugotovili značilno več poškodb tarzalnega sklepa razreda 1 pri SPOK. Pri obeh spremljanih proveniencah ni bilo moč zaznati poškodb prsi. To choose a suitable breed of chickens is one of the most important questions in organic poultry farming. The whole process should last for at least 81 days or less compared to slowly growing breeds.The main goal of the experiment was to compare the production of Ross 308 chickens and Slovene late-feathered hens (SPOK) under ecological farming conditions. We studied the growth of chickens for both provenances, we checked feet injuries, legs, breasts and tarsial joints. The research was conducted between 50 Ross 308 chickens and 52 SPOK chickens. The chickens were weighted once a week, and we also recorded their food consumption. Leg, tarsial joint and breast injuries have been evaluated on the 60th day for the Ross 308 chickens and on the 70th day for the Slovene late-feathered chickens (SPOK). The analysis of the data showed that the first 21 days of comparison the Slovene late-featherd hens had a statistically significant higher growth than the Ross 308 chickens, but after 42 days and towards the end of breeding the Ross 308 chickens grew more. The Ross 308 chickens achieved a significantly larger slaughter weight (3884.47 g) than the SPOK chickens within 81 days of growth. The SPOK chickens consumed more food and, despite their longer life, achieved a statistically significant lower weight of corpse, as well as a significantly smaller slaughter rate compared to Ross 308 chickens (71.43% and 76.94%). The analysis of injury estimates shows that there are no significant differences in the incidence of foot injuries during provenances, but there were significantly more injuries of class 1 tarsial joints in SPOK chickens. Beast injury was not observed in any of the species compared Ross 308 slovenska pozno operjena kokoš ekološko kmetovanje dobrobit Ross 308 slovenian late feathering hen organic farming welfare true true false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-09-11 11:43:40 2017-09-19 13:47:22 2022-08-01 14:54:45 2019-07-11 16:22:19 2017 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:I7AT5EIF VS_Kobold_Primoz_2017.pdf VS_Kobold_Primoz_2017.pdf 1 BD2BD308EA88B937413B38C838989A4D d1cdaa95903b11a9f1c0edb3a912f6096b97a6ee1fbfdf201750e65df75d7d25 39569891-7c0f-11eb-bb7a-00155d0001ca 20.500.12556/dkum/d3207a2d-0b1a-4949-bf7e-85ba8a11ae42 https://dk.um.si/Dokument.php?lang=slv&id=117635 Fakulteta za kmetijstvo in biosistemske vede 0 0 0